Weather in Boulder in Summer
| June | July | August | ||||
| Average day temperature: | ||||||
| Average day temperature: | 68.2°F | 74.0°F | 73.1°F | |||
| Average night temperature: | ||||||
| Average night temperature: | 50.7°F | 56.1°F | 55.9°F | |||
| Number of sunny days: | ||||||
| Number of sunny days: | 13 days | 12 days | 13 days | |||
| Day length: | ||||||
| Day length: | 14.8 - 15.0 h. | 14.3 - 15.0 h. | 13.1 - 14.2 h. | |||
| Number of rainy days: | ||||||
| Number of rainy days: | 6 days | 5 days | 2 days | |||
| Precipitation totals: | ||||||
| Precipitation totals: | 2.5 in. | 2.2 in. | 1.6 in. | |||
Day & Night air temperature, °F
Precipitation total, in.
Sunny, partly cloudy and cloudy days
Wind speed, mph
Average sunny hours
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
Best time for vacation in Boulder
Boulder on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boulder
Local time: 11:15
November 21, thursday
1200
52°F
W
4 mph
4 mph
1500
55°F
NW
2 mph
2 mph
1800
46°F
E
7 mph
7 mph
2100
43°F
E
10 mph
10 mph
November 22, friday
0000
39°F
E
10 mph
10 mph
0300
37°F
E
9 mph
9 mph
0600
39°F
E
7 mph
7 mph
0900
48°F
E
5 mph
5 mph
