Wasco weather in January

In January, Wasco sees average daytime highs of 29°F and overnight lows near 16°F, with 2.0 in of precipitation across 7.9 wet days and about 9.3 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°F through the month. The sky is clear or mostly clear about 22% of the time in January, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of January to 9 h 42 min by month's end. Set against the rest of the year, January is Wasco's 12th-clearest and 3rd-windiest month. For the whole year in context, see Wasco's year-round climate.

Daytime high
29°
12th warmest
Overnight low
16°
1st coldest
Precipitation
2.0 in
7.9 wet days
Daylight
9 h 18 min
7:25 AM – 4:41 PM
Cloud cover
71%
12th clearest
Wind
9 mph
3rd windiest
Solar energy
1.99 kWh/m²
Travel score
0.0
out of 10

Wasco is unincorporated community in Illinois.

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°F through the month.

A typical January day in Wasco reaches about 29°F in the afternoon and slips back to 16°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 14°F and 43°F. Set against its neighbours, January runs about 5°F cooler than December and about 4°F cooler than February.

20°40°151015202531
Avg high (°F)Avg low (°F)
13219
23119
33118
43118
53118
63117
73017
83017
93017
103017
113016
122916
132916
142916
152915
162915
172915
182915
192915
202915
212915
222915
232915
242915
252915
262915
272915
282915
292915
302916
312916

How January really feels in Wasco

Once humidity and wind are folded in, January 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
0
heat index over the day's high
Days feeling ≤ 32°F
31
31 feel bitter (≤ 14°F)

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

Wasco weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan29° / 16°2.07.95.69.30.0
Feb34° / 19°1.974.810.30.0
Mar46° / 29°2.69.22.911.71.3
Apr58° / 39°4.512.1113.14.0
May69° / 50°4.712.7014.35.9
Jun78° / 60°4.211.90156.4
Jul82° / 64°3.610.7014.76.3
Aug80° / 62°3.610.5013.76.6
Sep73° / 55°3.28.5012.37.0
Oct61° / 43°3.28.80.110.95.1
Nov46° / 32°2.47.91.59.61.5
Dec35° / 22°2.27.94.690.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 10% of January, with mostly cloudy or overcast conditions the remaining 68%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13268
23268
33169
43169
53169
63169
73169
83169
93169
103268
113268
123268
133466
143466
153466
163565
173565
183565
193466
203466
213466
223466
233367
243268
253268
263268
273169
283169
293070
303070
313169

Chance of precipitation in January

Any precipitationSnow

Wasco gets around 2.0 in of rain and snow over 7.9 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 25% and peaks near 27% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%151015202531
Rain chance (%)Snow chance (%)
12415
22415
32516
42516
52516
62616
72617
82617
92617
102617
112617
122618
132618
142618
152618
162719
172619
182619
192619
202620
212620
222520
232520
242520
252520
262420
272420
282420
292319
302319
312319

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

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

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 9 mph in January.

Across January, daily wind ranges from about 9 mph on the calmest days to 9 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
19light breeze
29light breeze
39light breeze
49light breeze
59light breeze
69light breeze
79light breeze
89light breeze
99light breeze
109light breeze
119light breeze
129light breeze
139light breeze
149light breeze
159light breeze
169light breeze
179light breeze
189light breeze
199light breeze
209light breeze
219light breeze
229light breeze
239light breeze
249light breeze
259light breeze
269light breeze
279light breeze
289light breeze
299light breeze
309light breeze
319light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 9 hours at the start of January to 9 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 42 minutes over January. Sunrise moves from 7:27 AM to 7:15 AM, and sunset from 4:27 PM to 4:59 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:274:27
29.07:274:27
39.07:274:28
49.07:274:29
59.07:274:30
69.17:274:31
79.17:274:32
89.17:274:33
99.17:274:34
109.17:274:35
119.27:264:36
129.27:264:37
139.27:264:38
149.27:264:39
159.27:254:40
169.37:254:41
179.37:254:42
189.37:244:43
199.37:244:44
209.47:234:45
219.47:234:47
229.47:224:48
239.57:214:49
249.57:214:50
259.57:204:51
269.67:194:52
279.67:194:54
289.67:184:55
299.77:174:56
309.77:164:57
319.77:154:59

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.99 kWh/m².

For context, solar energy here swings from a low near 1.67 kWh/m² to a high of 6.28 kWh/m² in June across the year — January's 1.99 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.8Dim
61.8Dim
71.8Dim
81.8Dim
91.8Dim
101.9Dim
111.9Dim
121.9Dim
131.9Dim
141.9Dim
152.0Dim
162.0Moderate
172.0Moderate
182.0Moderate
192.1Moderate
202.1Moderate
212.1Moderate
222.2Moderate
232.2Moderate
242.2Moderate
252.3Moderate
262.3Moderate
272.3Moderate
282.4Moderate
292.4Moderate
302.4Moderate
312.5Moderate
Planning a trip in January

Is January a good time to visit Wasco?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
9th-best month of the year

January is a weaker month for outdoor sightseeing in Wasco.

What to pack for Wasco in January

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

In January, Wasco sees daytime highs around 29°F and nights near 16°F. Pack a warm layer and a heavy coat. About 8 days see rain.

a warm layera heavy coat

Sea temperature near Wasco in January

The nearest coast averages about 38°F in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 40 mi away) is warmest in August at about 73°F and coldest in February near 36°F.

It's comfortable for a long swim from Jul 13 to Sep 15 — about 2.1 months when the water holds above 68°F.

30°40°50°60°70°80°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°F)Comfort
Jan38Bracing
Feb36Bracing
Mar36Bracing
Apr39Bracing
May45Bracing
Jun57Bracing
Jul70Refreshing
Aug73Refreshing
Sep68Refreshing
Oct58Bracing
Nov49Bracing
Dec42Bracing

UV index in Wasco in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 2. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Wasco peaks around June 20 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 20UV 9Dec 21UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar4Moderate
Apr6High
May8Very high
Jun9Very high
Jul8Very high
Aug8Very high
Sep6High
Oct3Moderate
Nov2Moderate
Dec2Low

Air quality in Wasco in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Wasco is worst in July — around 17 µg/m³ PM2.5 (moderate), about 1.9× the cleanest month (October, 9 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecModerateGoodJul 1817 µg/m³Oct 229 µg/m³
PM2.5 (µg/m³)Level
Jan12Moderate
Feb15Moderate
Mar16Moderate
Apr14Moderate
May15Moderate
Jun16Moderate
Jul17Moderate
Aug16Moderate
Sep13Moderate
Oct9Good
Nov10Good
Dec11Good
Location & terrain

Where is Wasco?

Wasco sits at 41.9°N, 88.4°W, 820 ft above sea level, in United States. The nearest listed city is St. Charles, 5.0 mi away.

Topography around Wasco

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

Within 2 miles, the terrain around Wasco has only modest variations in elevation — a maximum elevation change of 259 ft around an average of 840 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 436 ft; within 50 miles, significant variations in elevation — a maximum elevation change of 892 ft.

The land around Wasco is covered by trees (50%) and grassland (35%) within 2 miles, cropland (41%), trees (25%) and grassland (22%) within 10 miles, and cropland (46%) and trees (20%) within 50 miles.

2 miles
259 ft
10 miles
436 ft
50 miles
892 ft
treesgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: St. Charles 5.0 mi · Geneva 6.2 mi · South Elgin 6.8 mi · Batavia 7.5 mi · Elgin 9.3 mi · North Aurora 9.9 mi · West Chicago 11 mi · Bartlett 12 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
Protestant 47%unaffiliated 23%Roman Catholic 21%Jewish 2%

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 Wasco (41.9381°, -88.4045°, elevation 820 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).