Eagle weather in December

In December, Eagle sees average daytime highs of 37°F and overnight lows near 23°F, with 2.7 in of precipitation across 11.2 wet days and about 8.8 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 39°F in the first days to 36°F by the end. The sky is clear or mostly clear about 27% of the time in December, and the air most often feels dry.

Daylight stretches from about 9 hours at the start of December to 8 h 48 min by month's end. Set against the rest of the year, December is Eagle's 11th-clearest and 9th-windiest month. For the whole year in context, see Eagle's year-round climate.

Daytime high
37°
12th warmest
Overnight low
23°
2nd coldest
Precipitation
2.7 in
11.2 wet days
Daylight
8 h 48 min
8:19 AM – 5:04 PM
Cloud cover
63%
11th clearest
Wind
5 mph
9th windiest
Solar energy
1.63 kWh/m²
Travel score
0.0
out of 10

Eagle is city in Ada County, Idaho, United States.

Density
310/km²
people per km²

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

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 36°F by the end.

A typical December day in Eagle reaches about 37°F in the afternoon and slips back to 23°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 28°F and 46°F. Set against its neighbours, December runs about 10°F cooler than November and on par with January.

10°20°30°40°50°151015202531
Avg high (°F)Avg low (°F)
14026
24025
33925
43925
53925
63825
73824
83824
93824
103824
113824
123724
133724
143724
153724
163723
173723
183723
193723
203623
213623
223622
233622
243622
253622
263622
273622
283622
293622
303622
313622

How December really feels in Eagle

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
0
heat index over the day's high
Days feeling ≤ 32°F
31
wind chill below the day's low

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

Eagle weather by month

How December compares with the rest of the year at a glance. December is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan37° / 23°2.410.76.69.10.0
Feb43° / 27°1.79.24.310.20.6
Mar52° / 32°2.010.62.511.62.8
Apr60° / 37°1.78.60.513.24.9
May69° / 44°1.67.50.114.56.9
Jun78° / 51°0.83.9015.27.9
Jul89° / 58°0.21.2014.95.6
Aug87° / 57°0.21.5013.86.0
Sep77° / 49°0.62.6012.38.4
Oct62° / 39°1.250.110.86.2
Nov47° / 30°1.99.639.51.5
Dec37° / 23°2.711.26.98.80.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 27% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 59%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14258
24258
34357
44258
54258
64258
74258
84258
94258
104159
114159
124159
134258
144258
154159
164258
174258
184258
194357
204258
214258
224159
234159
244159
254159
264060
274060
284060
293961
303862
313763

Chance of precipitation in December

Any precipitationSnow

Eagle gets around 2.7 in of rain and snow over 11.2 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 35% and peaks near 37% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13619
23719
33720
43720
53720
63720
73720
83620
93620
103620
113520
123520
133520
143520
153521
163521
173421
183422
193422
203422
213422
223423
233423
243423
253423
263423
273423
283423
293423
303423
313423

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.

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 December

Winds average 5 mph in December.

Across December, daily wind ranges from about 4 mph on the calmest days to 5 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
304calm
314calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 9 hours at the start of December to 8 h 48 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 8:06 AM to 8:25 AM, and sunset from 5:05 PM to 5:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.08:065:05
29.08:075:04
38.98:085:04
48.98:095:04
58.98:105:04
68.98:115:04
78.98:125:04
88.88:135:03
98.88:135:03
108.88:145:03
118.88:155:03
128.88:165:04
138.88:175:04
148.88:175:04
158.88:185:04
168.88:195:04
178.88:195:05
188.78:205:05
198.78:215:05
208.78:215:06
218.78:225:06
228.78:225:06
238.78:235:07
248.78:235:08
258.78:245:08
268.78:245:09
278.88:245:09
288.88:245:10
298.88:255:11
308.88:255:11
318.88:255:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.63 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.63 kWh/m² to a high of 8.03 kWh/m² in July across the year — December's 1.63 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.7Dim
21.7Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.6Dim
141.6Dim
151.6Dim
161.6Dim
171.6Dim
181.6Dim
191.6Dim
201.6Dim
211.6Dim
221.6Dim
231.6Dim
241.6Dim
251.6Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Is December a good time to visit Eagle?

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

0.0
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Eagle.

What to pack for Eagle in December

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

In December, Eagle sees daytime highs around 37°F and nights near 23°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

UV index in Eagle 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 Eagle peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 1 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 13UV 9Dec 14UV 1
UV index (midday)Level
Jan2Low
Feb2Moderate
Mar4Moderate
Apr5High
May8Very high
Jun9Very high
Jul9Very high
Aug7Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Eagle 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 Eagle is worst in August — around 45 µg/m³ PM2.5 (poor), about 6.0× the cleanest month (December, 7 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodAug 1742 µg/m³Dec 208 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr10Good
May10Good
Jun8Good
Jul20Moderate
Aug45Poor
Sep21Moderate
Oct15Moderate
Nov9Good
Dec7Good
Location & terrain

Where is Eagle?

Eagle sits at 43.7°N, 116.4°W, 2,566 ft above sea level, in United States. The nearest listed city is Meridian, 6.2 mi away.

Topography around Eagle

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

Within 2 miles, the terrain around Eagle has only modest variations in elevation — a maximum elevation change of 171 ft around an average of 2,585 ft above sea level; within 10 miles, large variations in elevation — a maximum elevation change of 3,274 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 7,116 ft.

The land around Eagle is covered by trees (42%), grassland (24%) and artificial surfaces (22%) within 2 miles, grassland (54%) within 10 miles, and grassland (64%) within 50 miles.

2 miles
171 ft
10 miles
3,274 ft
50 miles
7,116 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Meridian 6.2 mi · Boise 9.3 mi · Kuna 14 mi · Nampa 15 mi · Caldwell 17 mi · Twin Falls 124 mi · Pendleton 181 mi · Lewiston Orchards 188 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 Eagle (43.6954°, -116.354°, elevation 2,566 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. 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).