Zion weather in December

In December, Zion sees average daytime highs of 36°F and overnight lows near 29°F, with 2.8 in of precipitation across 9.8 wet days and about 8.9 hours of daylight. It is the 10th-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 39°F in the first days to 33°F by the end. The sky is clear or mostly clear about 16% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 h 06 min at the start of December to 8 h 54 min by month's end. Set against the rest of the year, December is Zion's 11th-clearest and 2nd-windiest month. For the whole year in context, see Zion's year-round climate.

Daytime high: 36°; 10th warmest
Overnight low: 29°; 4th coldest
Precipitation: 2.8 in; 9.8 wet days
Daylight: 8 h 54 min; 7:20 AM – 4:15 PM
Cloud cover: 75%; 11th clearest
Wind: 15 mph; 2nd windiest
Solar energy: 1.44 kWh/m²
Travel score: 0.0; out of 10

Zion is city in Lake County, Illinois, United States.

Density: 949/km²; people per km²
Founded: 1901

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November Zion year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 39°F in the first days to 33°F by the end.

A typical December day in Zion reaches about 36°F in the afternoon and slips back to 29°F overnight — a 7°F spread between the day's warmth and the night's chill. On most days the high lands between 25°F and 45°F. Set against its neighbours, December runs about 10°F cooler than November and about 6°F warmer than January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°F)	40	40	39	39	39	38	38	38	37	37	37	37	36	36	36	36	35	35	35	35	35	35	34	34	34	34	34	33	33	33	33
Avg low (°F)	33	33	33	32	32	31	31	31	30	30	30	29	29	29	29	29	28	28	28	28	28	27	27	27	27	26	26	26	26	26	25

	Avg high (°F)	Avg low (°F)
1	40	33
2	40	33
3	39	33
4	39	32
5	39	32
6	38	31
7	38	31
8	38	31
9	37	30
10	37	30
11	37	30
12	37	29
13	36	29
14	36	29
15	36	29
16	36	29
17	35	28
18	35	28
19	35	28
20	35	28
21	35	28
22	35	27
23	34	27
24	34	27
25	34	27
26	34	26
27	34	26
28	33	26
29	33	26
30	33	26
31	33	25

How December really feels in Zion

Once humidity and wind are folded in, December averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.

Days feeling ≥ 90°F

heat index over the day's high

Days feeling ≤ 32°F

5 feel bitter (≤ 14°F)

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Zion weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 9th-wettest month here — the current month is highlighted below.

Month	High / Low (°F)	Rainfall (inches)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	30° / 22°	2.7	9.6	7	9.2	0.0
Feb	30° / 21°	2.2	7.5	5.4	10.3	0.0
Mar	36° / 28°	2.7	9.6	3.6	11.6	0.0
Apr	44° / 38°	4.5	11.8	1.5	13.1	0.8
May	55° / 49°	3.8	11.2	0	14.4	3.5
Jun	69° / 62°	3.2	10.1	0	15	6.3
Jul	77° / 70°	2.8	9.9	0	14.8	7.0
Aug	76° / 70°	3.7	10.6	0	13.7	7.0
Sep	70° / 64°	3.1	9.7	0	12.3	6.7
Oct	58° / 51°	3.8	10.8	0.1	10.8	4.3
Nov	46° / 39°	3.2	9.7	1.3	9.6	1.1
Dec	36° / 29°	2.8	9.8	4.9	8.9	0.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 16% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 10% of December, with mostly cloudy or overcast conditions the remaining 74%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	28	28	28	28	28	28	28	27	27	28	28	28	28	28	27	27	28	27	27	26	26	26	25	26	25	25	24	24	24	23	23
Cloudier (%)	72	72	72	72	72	72	72	73	73	72	72	72	72	72	73	73	72	73	73	74	74	74	75	74	75	75	76	76	76	77	77

	Clearer (%)	Cloudier (%)
1	28	72
2	28	72
3	28	72
4	28	72
5	28	72
6	28	72
7	28	72
8	27	73
9	27	73
10	28	72
11	28	72
12	28	72
13	28	72
14	28	72
15	27	73
16	27	73
17	28	72
18	27	73
19	27	73
20	26	74
21	26	74
22	26	74
23	25	75
24	26	74
25	25	75
26	25	75
27	24	76
28	24	76
29	24	76
30	23	77
31	23	77

Chance of precipitation in December

Any precipitationSnow

Zion gets around 2.8 in of rain and snow over 9.8 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 32% and peaks near 36% on the wettest days, and about 5 days bring snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	36	36	36	35	35	35	34	34	33	33	32	32	31	31	31	31	31	30	30	30	30	30	30	30	30	31	31	31	31	32	32
Snow chance (%)	13	14	14	15	15	15	15	16	15	15	15	15	15	15	15	14	14	14	14	14	15	15	15	16	16	17	17	18	18	19	19

	Rain chance (%)	Snow chance (%)
1	36	13
2	36	14
3	36	14
4	35	15
5	35	15
6	35	15
7	34	15
8	34	16
9	33	15
10	33	15
11	32	15
12	32	15
13	31	15
14	31	15
15	31	15
16	31	14
17	31	14
18	30	14
19	30	14
20	30	14
21	30	15
22	30	15
23	30	15
24	30	16
25	30	16
26	31	17
27	31	17
28	31	18
29	31	18
30	32	19
31	32	19

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in December

Winds average 15 mph in December.

Across December, daily wind ranges from about 15 mph on the calmest days to 16 mph at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (mph)	16	16	16	16	16	16	16	15	15	15	15	15	15	15	15	15	15	15	15	15	16	16	16	16	16	16	16	16	16	16	16
Feels	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy	breezy

	Wind speed (mph)	Feels
1	16	breezy
2	16	breezy
3	16	breezy
4	16	breezy
5	16	breezy
6	16	breezy
7	16	breezy
8	15	breezy
9	15	breezy
10	15	breezy
11	15	breezy
12	15	breezy
13	15	breezy
14	15	breezy
15	15	breezy
16	15	breezy
17	15	breezy
18	15	breezy
19	15	breezy
20	15	breezy
21	16	breezy
22	16	breezy
23	16	breezy
24	16	breezy
25	16	breezy
26	16	breezy
27	16	breezy
28	16	breezy
29	16	breezy
30	16	breezy
31	16	breezy

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 h 06 min at the start of December to 8 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:07 AM to 7:27 AM, and sunset from 4:15 PM to 4:22 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	9.1	9.1	9.1	9.1	9.0	9.0	9.0	9.0	9.0	9.0	9.0	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9	8.9
Sunrise (AM)	7:07	7:09	7:10	7:10	7:11	7:12	7:13	7:14	7:15	7:16	7:17	7:17	7:18	7:19	7:20	7:20	7:21	7:22	7:22	7:23	7:23	7:24	7:24	7:25	7:25	7:25	7:26	7:26	7:26	7:26	7:27
Sunset (PM)	4:15	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:14	4:15	4:15	4:15	4:16	4:16	4:16	4:17	4:17	4:18	4:18	4:19	4:20	4:20	4:21	4:22	4:22

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	9.1	7:07	4:15
2	9.1	7:09	4:14
3	9.1	7:10	4:14
4	9.1	7:10	4:14
5	9.0	7:11	4:14
6	9.0	7:12	4:14
7	9.0	7:13	4:14
8	9.0	7:14	4:14
9	9.0	7:15	4:14
10	9.0	7:16	4:14
11	9.0	7:17	4:14
12	8.9	7:17	4:14
13	8.9	7:18	4:14
14	8.9	7:19	4:14
15	8.9	7:20	4:14
16	8.9	7:20	4:15
17	8.9	7:21	4:15
18	8.9	7:22	4:15
19	8.9	7:22	4:16
20	8.9	7:23	4:16
21	8.9	7:23	4:16
22	8.9	7:24	4:17
23	8.9	7:24	4:17
24	8.9	7:25	4:18
25	8.9	7:25	4:18
26	8.9	7:25	4:19
27	8.9	7:26	4:20
28	8.9	7:26	4:20
29	8.9	7:26	4:21
30	8.9	7:26	4:22
31	8.9	7:27	4:22

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.44 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.44 kWh/m² to a high of 6.49 kWh/m² in June across the year — December's 1.44 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	1.6	1.6	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4	1.4
Level	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim	Dim

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.5	Dim
4	1.5	Dim
5	1.5	Dim
6	1.5	Dim
7	1.5	Dim
8	1.5	Dim
9	1.5	Dim
10	1.5	Dim
11	1.4	Dim
12	1.4	Dim
13	1.4	Dim
14	1.4	Dim
15	1.4	Dim
16	1.4	Dim
17	1.4	Dim
18	1.4	Dim
19	1.4	Dim
20	1.4	Dim
21	1.4	Dim
22	1.4	Dim
23	1.4	Dim
24	1.4	Dim
25	1.4	Dim
26	1.4	Dim
27	1.4	Dim
28	1.4	Dim
29	1.4	Dim
30	1.4	Dim
31	1.4	Dim

Planning a trip in December

Is December a good time to visit Zion?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.0

Sightseeing

9th-best month of the year

0.0

Beach & pool

7th-best month of the year

December is a weaker month for outdoor sightseeing in Zion.

What to pack for Zion in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Zion sees daytime highs around 36°F and nights near 29°F. Pack a warm layer and a heavy coat. Worth having: rain gear and a windbreaker. About 10 days see rain.

a warm layera heavy coatrain geara windbreaker

Sea temperature near Zion in December

The nearest coast averages about 42°F in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in August at about 71°F and coldest in March near 36°F.

It's comfortable for a long swim from Jul 18 to Sep 8 — about 1.7 months when the water holds above 68°F.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Sea temperature (°F)	38	36	36	38	43	55	68	71	67	57	47	42
Comfort	Bracing	Bracing	Bracing	Bracing	Bracing	Bracing	Refreshing	Refreshing	Cool	Bracing	Bracing	Bracing

	Sea temperature (°F)	Comfort
Jan	38	Bracing
Feb	36	Bracing
Mar	36	Bracing
Apr	38	Bracing
May	43	Bracing
Jun	55	Bracing
Jul	68	Refreshing
Aug	71	Refreshing
Sep	67	Cool
Oct	57	Bracing
Nov	47	Bracing
Dec	42	Bracing

UV index in Zion in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Zion peaks around June 22 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	2	4	6	7	9	9	8	6	3	2	1
Level	Low	Moderate	Moderate	High	Very high	Very high	Very high	Very high	High	Moderate	Moderate	Low

	UV index (midday)	Level
Jan	1	Low
Feb	2	Moderate
Mar	4	Moderate
Apr	6	High
May	7	Very high
Jun	9	Very high
Jul	9	Very high
Aug	8	Very high
Sep	6	High
Oct	3	Moderate
Nov	2	Moderate
Dec	1	Low

Air quality in Zion in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Zion is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.8× the cleanest month (October, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	11	13	15	15	16	17	17	16	13	9	9	10
Level	Good	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Good	Good	Good

	PM2.5 (µg/m³)	Level
Jan	11	Good
Feb	13	Moderate
Mar	15	Moderate
Apr	15	Moderate
May	16	Moderate
Jun	17	Moderate
Jul	17	Moderate
Aug	16	Moderate
Sep	13	Moderate
Oct	9	Good
Nov	9	Good
Dec	10	Good

Location & terrain

Where is Zion?

Zion sits at 42.4°N, 87.8°W, 650 ft above sea level, in United States. The nearest listed city is Waukegan, 5.6 mi away.

Topography around Zion

How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Zion.

Within 2 miles, the terrain around Zion has only modest variations in elevation — a maximum elevation change of 233 ft around an average of 650 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 295 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 804 ft.

The land around Zion is covered by trees (47%), grassland (24%) and artificial surfaces (20%) within 2 miles, water (44%) and trees (20%) within 10 miles, and water (47%) within 50 miles.

2 miles

233 ft

trees 47%

10 miles

295 ft

water 44%

50 miles

804 ft

water 47%

treesgrasslandcroplandartificial surfacesbare terrainwater

← November Zion year-round climate January →Best places to visit in December

December weather nearby: Waukegan 5.6 mi · Gurnee 6.2 mi · North Chicago 8.1 mi · Pleasant Prairie 8.7 mi · Kenosha 9.3 mi · Grayslake 13 mi · Libertyville 13 mi · Lake Forest 13 mi

United States travel facts

Power plugs: Type A / B; 120 V · 60 Hz
Prices: ≈ 100% of US; price level, 2025
GDP per capita: $90,027; 2025
Happiness: 6.8 / 10; World Happiness, 2025
Safe drinking water: 98%; of population, 2024
Homicide rate: 5.8; per 100k, 2023
Road deaths: 12.7; per 100k/yr, 2019
Income group: High; World Bank
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Zion (42.4461°, -87.8328°, elevation 650 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°F)	Avg low (°F)
1	40	33
2	40	33
3	39	33
4	39	32
5	39	32
6	38	31
7	38	31
8	38	31
9	37	30
10	37	30
11	37	30
12	37	29
13	36	29
14	36	29
15	36	29
16	36	29
17	35	28
18	35	28
19	35	28
20	35	28
21	35	28
22	35	27
23	34	27
24	34	27
25	34	27
26	34	26
27	34	26
28	33	26
29	33	26
30	33	26
31	33	25

	Clearer (%)	Cloudier (%)
1	28	72
2	28	72
3	28	72
4	28	72
5	28	72
6	28	72
7	28	72
8	27	73
9	27	73
10	28	72
11	28	72
12	28	72
13	28	72
14	28	72
15	27	73
16	27	73
17	28	72
18	27	73
19	27	73
20	26	74
21	26	74
22	26	74
23	25	75
24	26	74
25	25	75
26	25	75
27	24	76
28	24	76
29	24	76
30	23	77
31	23	77

	Rain chance (%)	Snow chance (%)
1	36	13
2	36	14
3	36	14
4	35	15
5	35	15
6	35	15
7	34	15
8	34	16
9	33	15
10	33	15
11	32	15
12	32	15
13	31	15
14	31	15
15	31	15
16	31	14
17	31	14
18	30	14
19	30	14
20	30	14
21	30	15
22	30	15
23	30	15
24	30	16
25	30	16
26	31	17
27	31	17
28	31	18
29	31	18
30	32	19
31	32	19

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.5	Dim
4	1.5	Dim
5	1.5	Dim
6	1.5	Dim
7	1.5	Dim
8	1.5	Dim
9	1.5	Dim
10	1.5	Dim
11	1.4	Dim
12	1.4	Dim
13	1.4	Dim
14	1.4	Dim
15	1.4	Dim
16	1.4	Dim
17	1.4	Dim
18	1.4	Dim
19	1.4	Dim
20	1.4	Dim
21	1.4	Dim
22	1.4	Dim
23	1.4	Dim
24	1.4	Dim
25	1.4	Dim
26	1.4	Dim
27	1.4	Dim
28	1.4	Dim
29	1.4	Dim
30	1.4	Dim
31	1.4	Dim

	Avg high (°F)	Avg low (°F)
1	40	33
2	40	33
3	39	33
4	39	32
5	39	32
6	38	31
7	38	31
8	38	31
9	37	30
10	37	30
11	37	30
12	37	29
13	36	29
14	36	29
15	36	29
16	36	29
17	35	28
18	35	28
19	35	28
20	35	28
21	35	28
22	35	27
23	34	27
24	34	27
25	34	27
26	34	26
27	34	26
28	33	26
29	33	26
30	33	26
31	33	25

	Clearer (%)	Cloudier (%)
1	28	72
2	28	72
3	28	72
4	28	72
5	28	72
6	28	72
7	28	72
8	27	73
9	27	73
10	28	72
11	28	72
12	28	72
13	28	72
14	28	72
15	27	73
16	27	73
17	28	72
18	27	73
19	27	73
20	26	74
21	26	74
22	26	74
23	25	75
24	26	74
25	25	75
26	25	75
27	24	76
28	24	76
29	24	76
30	23	77
31	23	77

	Rain chance (%)	Snow chance (%)
1	36	13
2	36	14
3	36	14
4	35	15
5	35	15
6	35	15
7	34	15
8	34	16
9	33	15
10	33	15
11	32	15
12	32	15
13	31	15
14	31	15
15	31	15
16	31	14
17	31	14
18	30	14
19	30	14
20	30	14
21	30	15
22	30	15
23	30	15
24	30	16
25	30	16
26	31	17
27	31	17
28	31	18
29	31	18
30	32	19
31	32	19

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.5	Dim
4	1.5	Dim
5	1.5	Dim
6	1.5	Dim
7	1.5	Dim
8	1.5	Dim
9	1.5	Dim
10	1.5	Dim
11	1.4	Dim
12	1.4	Dim
13	1.4	Dim
14	1.4	Dim
15	1.4	Dim
16	1.4	Dim
17	1.4	Dim
18	1.4	Dim
19	1.4	Dim
20	1.4	Dim
21	1.4	Dim
22	1.4	Dim
23	1.4	Dim
24	1.4	Dim
25	1.4	Dim
26	1.4	Dim
27	1.4	Dim
28	1.4	Dim
29	1.4	Dim
30	1.4	Dim
31	1.4	Dim

	Avg high (°F)	Avg low (°F)
1	40	33
2	40	33
3	39	33
4	39	32
5	39	32
6	38	31
7	38	31
8	38	31
9	37	30
10	37	30
11	37	30
12	37	29
13	36	29
14	36	29
15	36	29
16	36	29
17	35	28
18	35	28
19	35	28
20	35	28
21	35	28
22	35	27
23	34	27
24	34	27
25	34	27
26	34	26
27	34	26
28	33	26
29	33	26
30	33	26
31	33	25

	Clearer (%)	Cloudier (%)
1	28	72
2	28	72
3	28	72
4	28	72
5	28	72
6	28	72
7	28	72
8	27	73
9	27	73
10	28	72
11	28	72
12	28	72
13	28	72
14	28	72
15	27	73
16	27	73
17	28	72
18	27	73
19	27	73
20	26	74
21	26	74
22	26	74
23	25	75
24	26	74
25	25	75
26	25	75
27	24	76
28	24	76
29	24	76
30	23	77
31	23	77

	Rain chance (%)	Snow chance (%)
1	36	13
2	36	14
3	36	14
4	35	15
5	35	15
6	35	15
7	34	15
8	34	16
9	33	15
10	33	15
11	32	15
12	32	15
13	31	15
14	31	15
15	31	15
16	31	14
17	31	14
18	30	14
19	30	14
20	30	14
21	30	15
22	30	15
23	30	15
24	30	16
25	30	16
26	31	17
27	31	17
28	31	18
29	31	18
30	32	19
31	32	19

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Solar energy (kWh/m²)	Level
1	1.6	Dim
2	1.6	Dim
3	1.5	Dim
4	1.5	Dim
5	1.5	Dim
6	1.5	Dim
7	1.5	Dim
8	1.5	Dim
9	1.5	Dim
10	1.5	Dim
11	1.4	Dim
12	1.4	Dim
13	1.4	Dim
14	1.4	Dim
15	1.4	Dim
16	1.4	Dim
17	1.4	Dim
18	1.4	Dim
19	1.4	Dim
20	1.4	Dim
21	1.4	Dim
22	1.4	Dim
23	1.4	Dim
24	1.4	Dim
25	1.4	Dim
26	1.4	Dim
27	1.4	Dim
28	1.4	Dim
29	1.4	Dim
30	1.4	Dim
31	1.4	Dim