Rexburg weather in December

In December, Rexburg sees average daytime highs of 31°F and overnight lows near 15°F, with 1.8 in of precipitation across 10.3 wet days and about 8.8 hours of daylight. It is the 11th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 34°F in the first days to 29°F by the end. The sky is clear or mostly clear about 22% 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 Rexburg's 12th-clearest and 11th-windiest month. For the whole year in context, see Rexburg's year-round climate.

Daytime high
31°
11th warmest
Overnight low
15°
2nd coldest
Precipitation
1.8 in
10.3 wet days
Daylight
8 h 42 min
8:01 AM – 4:46 PM
Cloud cover
68%
12th clearest
Wind
5 mph
11th windiest
Solar energy
1.65 kWh/m²
Travel score
0.0
out of 10

Rexburg is city in and county seat of Madison County, Idaho, United States.

Density
1,092/km²
people per km²
Founded
1883

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 34°F in the first days to 29°F by the end.

A typical December day in Rexburg reaches about 31°F in the afternoon and slips back to 15°F overnight — a 16°F spread between the day's warmth and the night's chill. On most days the high lands between 19°F and 41°F. Set against its neighbours, December runs about 11°F cooler than November and on par with January.

20°40°151015202531
Avg high (°F)Avg low (°F)
13418
23418
33418
43317
53317
63317
73216
83216
93216
103116
113115
123115
133115
143015
153015
163014
173014
183014
192914
202914
212913
222913
232913
242913
252913
262913
272913
282913
292913
302913
312913

How December really feels in Rexburg

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
31 feel bitter (≤ 14°F)

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

Rexburg weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan30° / 15°1.710.711.79.10.0
Feb35° / 19°1.38.78.210.20.0
Mar45° / 27°1.69.74.911.61.1
Apr55° / 33°2.111.93.113.23.4
May65° / 41°2.410.30.614.55.8
Jun75° / 48°1.56.70.115.27.4
Jul85° / 55°0.53014.96.4
Aug84° / 54°0.63.4013.86.9
Sep73° / 46°1.14.30.112.37.9
Oct58° / 36°1.57.11.210.84.7
Nov42° / 24°1.48.76.59.50.6
Dec31° / 15°1.810.3118.80.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

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

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 65%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33466
43565
53565
63565
73466
83466
93565
103565
113367
123367
133367
143367
153367
163466
173466
183466
193466
203466
213466
223565
233466
243565
253565
263565
273664
283664
293664
303565
313466

Chance of precipitation in December

Any precipitationSnow

Rexburg gets around 1.8 in of rain and snow over 10.3 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 33% and peaks near 35% on the wettest days, and about 11 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13532
23432
33432
43433
53433
63433
73434
83434
93334
103334
113334
123234
133235
143235
153236
163236
173236
183236
193237
203237
213237
223236
233236
243236
253336
263336
273336
283336
293336
303337
313437

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 5 mph on the calmest days to 6 mph at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (mph)Feels
16calm
26calm
36calm
46calm
56calm
66calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 7:48 AM to 8:07 AM, and sunset from 4:46 PM to 4:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
19.07:484:46
28.97:494:46
38.97:504:45
48.97:514:45
58.97:524:45
68.97:534:45
78.87:544:45
88.87:554:45
98.87:564:45
108.87:564:45
118.87:574:45
128.87:584:45
138.87:594:45
148.88:004:45
158.78:004:45
168.78:014:46
178.78:024:46
188.78:024:46
198.78:034:47
208.78:034:47
218.78:044:47
228.78:044:48
238.78:054:48
248.78:054:49
258.78:064:49
268.78:064:50
278.78:064:51
288.78:074:51
298.78:074:52
308.88:074:53
318.88:074:53

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.65 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.65 kWh/m² to a high of 7.95 kWh/m² in July across the year — December's 1.65 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.8Dim
21.8Dim
31.7Dim
41.7Dim
51.7Dim
61.7Dim
71.7Dim
81.7Dim
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
231.7Dim
241.7Dim
251.7Dim
261.7Dim
271.7Dim
281.7Dim
291.7Dim
301.7Dim
311.7Dim
Planning a trip in December

Is December a good time to visit Rexburg?

Our two travel scores rate December 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
8th-best month of the year

December is a weaker month for outdoor sightseeing in Rexburg.

What to pack for Rexburg in December

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

In December, Rexburg sees daytime highs around 31°F and nights near 15°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Rexburg in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Rexburg peaks around July 13 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 at about 2 (low).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateVery highHighModerateLowJul 13UV 9Jan 1UV 2
UV index (midday)Level
Jan2Low
Feb3Moderate
Mar5Moderate
Apr5Moderate
May7Very high
Jun9Very high
Jul9Very high
Aug8Very high
Sep6High
Oct4Moderate
Nov2Low
Dec2Low

Air quality in Rexburg 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 Rexburg is worst in August — around 20 µg/m³ PM2.5 (moderate), about 3.1× the cleanest month (December, 7 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodAug 1420 µg/m³Dec 197 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar10Good
Apr10Good
May10Good
Jun9Good
Jul17Moderate
Aug20Moderate
Sep14Moderate
Oct9Good
Nov9Good
Dec7Good
Location & terrain

Where is Rexburg?

Rexburg sits at 43.8°N, 111.8°W, 4,865 ft above sea level, in United States. The nearest listed city is Idaho Falls, 28 mi away.

Topography around Rexburg

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

Within 2 miles, the terrain around Rexburg has only modest variations in elevation — a maximum elevation change of 394 ft around an average of 4,911 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 955 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 8,753 ft.

The land around Rexburg is covered by cropland (33%), artificial surfaces (27%) and grassland (24%) within 2 miles, cropland (63%) and grassland (25%) within 10 miles, and grassland (46%) and trees (29%) within 50 miles.

2 miles
394 ft
10 miles
955 ft
50 miles
8,753 ft
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Idaho Falls 28 mi · Pocatello 74 mi · Conda 77 mi · Bozeman 133 mi · Logan 144 mi · Butte 155 mi · Twin Falls 160 mi · Brigham City 160 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 Rexburg (43.826°, -111.7897°, elevation 4,865 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).