Weather in Boulder in Summer
| June | July | August | ||||
| Average day temperature: | ||||||
| Average day temperature: | 69.7°F | 75.7°F | 74.6°F | |||
| Average night temperature: | ||||||
| Average night temperature: | 51.8°F | 57.5°F | 56.8°F | |||
| Number of sunny days: | ||||||
| Number of sunny days: | 14 days | 12 days | 14 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 | 4 days | 2 days | |||
| Precipitation totals: | ||||||
| Precipitation totals: | 2.4 in. | 1.8 in. | 1.5 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: 14:33
December 17, wednesday
1500
59°F
E
39 mph
39 mph
1800
50°F
E
31 mph
31 mph
2100
43°F
E
17 mph
17 mph
December 18, thursday
0000
34°F
E
11 mph
11 mph
0300
28°F
E
30 mph
30 mph
0600
25°F
SE
24 mph
24 mph
0900
25°F
E
23 mph
23 mph
1200
34°F
SE
21 mph
21 mph
