Average data for 10 years
1 January
Monday
−3°
−7°
2 January
Tuesday
−1°
−5°
3 January
Wednesday
−1°
−6°
4 January
Thursday
−2°
−6°
5 January
Friday
−1°
−4°
6 January
Saturday
−1°
−4°
7 January
Sunday
−2°
−5°
8 January
Monday
0°
−4°
9 January
Tuesday
0°
−5°
10 January
Wednesday
−2°
−4°
11 January
Thursday
−1°
−6°
12 January
Friday
−3°
−7°
13 January
Saturday
−1°
−4°
14 January
Sunday
−2°
−5°
15 January
Monday
+1°
−3°
16 January
Tuesday
0°
−4°
17 January
Wednesday
0°
−3°
18 January
Thursday
+2°
−2°
19 January
Friday
+3°
−3°
20 January
Saturday
+1°
−5°
21 January
Sunday
0°
−3°
22 January
Monday
+1°
−4°
23 January
Tuesday
0°
−4°
24 January
Wednesday
0°
−4°
25 January
Thursday
0°
−4°
26 January
Friday
0°
−5°
27 January
Saturday
0°
−4°
28 January
Sunday
+1°
−4°
29 January
Monday
0°
−2°
30 January
Tuesday
+2°
−3°
31 January
Wednesday
−1°
−6°
Cities with similar weather in January
Kazakhstan
Almaty
Belarus
Brest
China
Beijing
South Korea
Seoul
Belarus
Grodno
January in Boulder is the snowiest month of the year. In January, the weather in Boulder is typically freezing. Average daily high temperature in January is about zero. On average, Boulder has 15 partly cloudy, 12 sunny, 2 snowy, and 2 cloudy days in January. The snowfalls are usually light.