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Today Hourly 7 days 30 days December
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December 2025 Weather | Boulder, Colorado

Today 12/4
Cloudy Weather
Day 43°
Night 27°
1
Fri 12/5
Cloudy Weather
Day 43°
Night 32°
16
Sat 12/6
Snowy Weather
Day 46°
Night 32°
79
Sun 12/7
Cloudy Weather
Day 46°
Night 28°
10
Mon 12/8
Cloudy Weather
Day 46°
Night 34°
8
Tue 12/9
Cloudy Weather
Day 54°
Night 43°
11
Wed 12/10
Cloudy Weather
Day 54°
Night 41°
0
Thu 12/11
Rainy Weather
Day 52°
Night 37°
55
Fri 12/12
Cloudy Weather
Day 54°
Night 36°
0
Sat 12/13
Cloudy Weather
Day 54°
Night 37°
0
Sun 12/14
Cloudy Weather
Day 55°
Night 34°
0
Mon 12/15
Cloudy Weather
Day 52°
Night 34°
0
Tue 12/16
Cloudy Weather
Day 52°
Night 32°
0
Wed 12/17
Rainy Weather
Day 46°
Night 19°
68
Thu 12/18
Cloudy Weather
Day 46°
Night 27°
25
Fri 12/19
Cloudy Weather
Day 50°
Night 27°
20
Sat 12/20
Cloudy Weather
Day 50°
Night 27°
20
Sun 12/21
Cloudy Weather
Day 48°
Night 27°
20
Mon 12/22
Rainy Weather
Day 50°
Night 27°
57
Tue 12/23
Cloudy Weather
Day 39°
Night 25°
20
Wed 12/24
Cloudy Weather
Day 45°
Night 23°
30
Thu 12/25
Cloudy Weather
Day 43°
Night 14°
25
Fri 12/26
Cloudy Weather
Day 36°
Night 14°
20
Sat 12/27
Sunny Weather
Day 39°
Night 18°
5
Sun 12/28
Cloudy Weather
Day 39°
Night 18°
20
Mon 12/29
Cloudy Weather
Day 37°
Night 19°
25
Tue 12/30
Snowy Weather
Day 37°
Night 14°
65
Wed 12/31
Cloudy Weather
Day 36°
Night 14°
25