Historical Weather Records & Monthly Climate for Boulder, CO
All-Time High
100°F
All-Time Low
-42°F
Max Daily Snow
14.3"
Max Wind Gust
99 mph
Monthly Climate Averages
Based on 30 years of historical data (1994 - 2023)
| Month | High (°F) | Low (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|
| January | 39° | 16° | 0.96" | 6.7" |
| February | 41° | 16° | 1.07" | 7.36" |
| March | 50° | 23° | 1.9" | 10.54" |
| April | 57° | 31° | 2.92" | 11.71" |
| May | 67° | 41° | 4.01" | 4.25" |
| June | 78° | 52° | 2.64" | 0.17" |
| July | 85° | 58° | 2.51" | 0 |
| August | 83° | 57° | 2.33" | 0 |
| September | 75° | 49° | 1.94" | 1.35" |
| October | 62° | 37° | 1.75" | 4.69" |
| November | 49° | 25° | 1.1" | 6.35" |
| December | 40° | 17° | 0.94" | 6.56" |
Historical Weather Extremes
Based on 80+ years of archive data (1940 - 2024)
🔥
Longest Heatwave
14 Days
2012
Consecutive days ≥ 90°F
🧊
Deepest Freeze
14 Days
1974
Consecutive days ≤ 32°F
🏜️
Longest Drought
30 Days
2012
Consecutive days w/o rain
☔
Wettest Month
9.15"
May 1967
Most rainfall in one month
⛄
Snowiest Month
31.75"
April 1957
Most snowfall in one month
More Historical Climate Data for Cities in
CO