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7 Days
14 Days
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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Boulder, CO
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May
Average Temperature
High
19°
Feels 19
Low
7°
Feels 5
Average Precipitation
10 Days
Rain amount
32.3mm
Snow amount
1.9cm
Content continues below
Daily Historical Averages
May 2026
S
M
T
W
T
F
S
1
2
3
25°
4
22°
5
4°
6
7°
7
21°
8
23°
9
27°
10
19°
11
23°
12
27°
13
30°
14
25°
15
29°
16
26°
17
25°
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Forecast
Sunday, May 3, 2026
Day
25°
Feels 25
Wind
20 km/h W
Gust
29 km/h
Humidity
6%
P.O.P
30%
Night
9°
Feels 7
Wind
14 km/h W
Gust
21 km/h
Humidity
46%
P.O.P
30%
Historical Averages
May 3
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.