Willmar weather in December

In December, Willmar sees average daytime highs of 26°F and overnight lows near 12°F, with 1.1 in of precipitation across 5.5 wet days and about 8.6 hours of daylight. It is the 10th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 30°F in the first days to 23°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 8 h 48 min at the start of December to 8 h 36 min by month's end. Set against the rest of the year, December is Willmar's 12th-clearest and 8th-windiest month. For the whole year in context, see Willmar's year-round climate.

Daytime high
26°
10th warmest
Overnight low
12°
3rd coldest
Precipitation
1.1 in
5.5 wet days
Daylight
8 h 36 min
7:59 AM – 4:34 PM
Cloud cover
69%
12th clearest
Wind
10 mph
8th windiest
Solar energy
1.53 kWh/m²
Travel score
0.0
out of 10

Willmar is city in Minnesota, USA.

Density
475/km²
people per km²
Founded
1871

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 30°F in the first days to 23°F by the end.

A typical December day in Willmar reaches about 26°F in the afternoon and slips back to 12°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 9°F and 40°F. Set against its neighbours, December runs about 14°F cooler than November and about 5°F warmer than January.

20°40°151015202531
Avg high (°F)Avg low (°F)
13117
23117
33116
43016
52915
62915
72914
82814
92814
102813
112713
122713
132713
142612
152612
162612
172612
182611
192511
202511
212511
222511
232410
242410
252410
262410
27239
28239
29239
30228
31228

How December really feels in Willmar

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.

Willmar weather by month

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

MonthHigh / Low (°F)Rainfall (inches)Wet daysSnow daysDaylight (hours)Travel score
Jan21° / 0.95.25.490.0
Feb26° / 10°0.954.410.10.0
Mar39° / 22°1.87.24.111.60.3
Apr55° / 35°3.19.92.513.23.4
May68° / 48°4.112.10.114.65.9
Jun77° / 59°5.412.6015.46.3
Jul81° / 63°3.79.7015.16.7
Aug79° / 60°3.89.3013.97.0
Sep71° / 51°3.38.8012.36.9
Oct57° / 39°2.58.10.710.74.3
Nov40° / 25°1.65.73.59.30.5
Dec26° / 12°1.15.55.58.60.0

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 (%)
13961
23961
33961
43961
54060
63862
73862
83763
93763
103664
113565
123565
133565
143466
153466
163367
173367
183367
193367
203367
213367
223268
233268
243367
253466
263466
273565
283565
293565
303565
313664

Chance of precipitation in December

Any precipitationSnow

Willmar gets around 1.1 in of rain and snow over 5.5 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 18% and peaks near 19% on the wettest days, and about 6 days bring snow.

0%10%20%30%151015202531
Rain chance (%)Snow chance (%)
11917
21817
31817
41817
51817
61817
71817
81817
91817
101817
111817
121817
131817
141818
151818
161818
171818
181818
191818
201818
211818
221818
231818
241718
251717
261717
271716
281716
291616
301615
311615

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 10 mph in December.

Across December, daily wind ranges from about 9 mph on the calmest days to 10 mph at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (mph)Feels
110light 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
1710light breeze
1810light breeze
1910light breeze
2010light breeze
2110light breeze
2210light breeze
2310light breeze
2410light breeze
2510light breeze
2610light breeze
2710light breeze
2810light breeze
2910light breeze
3010light breeze
3110light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 48 min at the start of December to 8 h 36 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 7:45 AM to 8:05 AM, and sunset from 4:35 PM to 4:42 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:454:35
28.87:464:34
38.87:474:34
48.87:494:34
58.77:504:33
68.77:514:33
78.77:514:33
88.77:524:33
98.77:534:33
108.67:544:33
118.67:554:33
128.67:564:33
138.67:574:33
148.67:574:33
158.67:584:34
168.67:594:34
178.68:004:34
188.68:004:34
198.68:014:35
208.68:014:35
218.68:024:35
228.68:024:36
238.68:034:36
248.68:034:37
258.68:044:37
268.68:044:38
278.68:044:39
288.68:054:39
298.68:054:40
308.68:054:41
318.68:054:42

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.53 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.53 kWh/m² to a high of 6.44 kWh/m² in July across the year — December's 1.53 kWh/m² sits near the bottom.

00.511.522.5151015202531
Solar energy (kWh/m²)Level
11.6Dim
21.6Dim
31.6Dim
41.6Dim
51.6Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.5Dim
131.5Dim
141.5Dim
151.5Dim
161.5Dim
171.5Dim
181.5Dim
191.5Dim
201.5Dim
211.5Dim
221.5Dim
231.5Dim
241.5Dim
251.5Dim
261.6Dim
271.6Dim
281.6Dim
291.6Dim
301.6Dim
311.6Dim
Planning a trip in December

Hazard calendar for Willmar

In seasonPeak

None of Willmar's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Willmar's rainy season runs April–October, when most of the year's rain falls.

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

Is December a good time to visit Willmar?

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 Willmar.

What to pack for Willmar in December

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

In December, Willmar sees daytime highs around 26°F and nights near 12°F. Pack a warm layer and a heavy coat. About 6 days see rain.

a warm layera heavy coat

UV index in Willmar 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 Willmar peaks around June 20 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near January 11 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 highHighModerateLowJun 20UV 8Jan 11UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun9Very high
Jul8Very high
Aug7High
Sep5High
Oct4Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Willmar?

Willmar sits at 45.1°N, 95.0°W, 1,142 ft above sea level, in United States. The nearest listed city is Saint Cloud, 52 mi away.

Topography around Willmar

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

Within 2 miles, the terrain around Willmar has only modest variations in elevation — a maximum elevation change of 105 ft around an average of 1,132 ft above sea level; within 10 miles, only modest variations in elevation — a maximum elevation change of 230 ft; within 50 miles, only modest variations in elevation — a maximum elevation change of 692 ft.

The land around Willmar is covered by trees (23%), grassland (22%) and artificial surfaces (22%) within 2 miles, cropland (62%) within 10 miles, and cropland (74%) within 50 miles.

2 miles
105 ft
10 miles
230 ft
50 miles
692 ft
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Saint Cloud 52 mi · Sartell 53 mi · Buffalo 57 mi · Saint Michael 67 mi · Otsego 71 mi · Elk River 73 mi · Chaska 74 mi · Chanhassen 76 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 Willmar (45.1219°, -95.0433°, elevation 1,142 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).