Please click on any column to get detailed information about Boulder weather in that particular month. You will get daily weather information for that month for the last several years.
Day & Night air temperature, °F
The warmest month in Boulder is july. The average daily temp is 77.5°F. The average nightly temp is 57.9°F.
Precipitation total, in.
Number of rainy days
This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.
Wind speed, mph
Sunny, partly cloudy and cloudy days
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.
* Charts above show average data for the last 3 years.
Best time for vacation in Boulder
Boulder on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Boulder
Local time: 04:08
September 19, saturday
0600
55°F
E
6 mph
6 mph
0900
68°F
SW
3 mph
3 mph
1200
75°F
W
11 mph
11 mph
1500
70°F
NE
7 mph
7 mph
1800
61°F
W
2 mph
2 mph
2100
54°F
E
7 mph
7 mph
September 20, sunday
0000
52°F
E
4 mph
4 mph
0300
52°F
E
7 mph
7 mph
