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
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
12
24
36
48
60
72
84
96
37.0
42.6
56.0
68.7
73.1
74.0
68.2
55.7
44.0
37.0
30.0
29.5
24.4
27.6
38.8
50.1
55.9
56.1
50.7
39.1
28.7
23.1
17.0
17.3
Day temperature | Night temperature |
The warmest month in Boulder is july. The average daily temp is 74.0°F. The average nightly temp is 56.1°F.
Precipitation total, in.
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
0.4
0.8
1.3
1.7
2.1
2.5
2.9
3.4
0.4
0.7
0.5
0.7
1.6
2.2
2.5
2.4
1.6
1.5
0.6
0.3
Number of rainy days
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
1
1
1
1
2
5
6
4
3
2
1
0
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
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
8.7
8.2
7.2
6.6
6.3
6.4
7
6.7
8
7.2
8.8
8.6
Sunny, partly cloudy and cloudy days
1
2
3
4
5
6
7
8
9
10
11
12
0
5
10
15
20
25
30
35
5
4
2
3
2
3
4
8
9
8
6
7
9
7
8
7
15
16
12
14
9
11
9
9
17
19
21
21
13
12
13
9
13
12
13
15
Cloudy days | Partly cloudy days | Sunny days |
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
11
6.5
7.1
8.5
9.5
9
9.5
9.6
8.1
7.9
7
6.8
6.1
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
Leaflet | Tiles © Esri
Places in USA:
Name
°F
24 Hours Forecast
Boulder
Local time: 19:50
January 09, thursday
2100
16°F
E
8 mph
8 mph
January 10, friday
0000
12°F
E
9 mph
9 mph
0300
9°F
E
11 mph
11 mph
0600
9°F
E
11 mph
11 mph
0900
12°F
E
12 mph
12 mph
1200
30°F
E
6 mph
6 mph
1500
36°F
E
9 mph
9 mph
1800
32°F
E
12 mph
12 mph