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Monthly
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Current
Hourly
7 Days
14 Days
Monthly
°C
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Longmont, CO
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December
Average Temperature
High
5°
Feels 3
Low
-8°
Feels -12
Average Precipitation
1 Days
Rain amount
0mm
Snow amount
3cm
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Daily Historical Averages
December 2025
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
18°
25
19°
26
16°
27
13°
28
-1°
29
3°
30
5°
31
7°
Forecast
Wednesday, December 24, 2025
Day
18°
Feels 18
Wind
7 km/h W
Gust
11 km/h
Humidity
22%
P.O.P
30%
Night
4°
Feels 4
Wind
6 km/h W
Gust
9 km/h
Humidity
67%
P.O.P
30%
Historical Averages
Dec 24
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.