Boulder, CO Weather

Average Temperature
Jan
45 °F
7 °C
Feb
37 °F
3 °C
Mar
46 °F
8 °C
Apr
61 °F
16 °C
May
59 °F
15 °C
Jun
73 °F
23 °C
Jul
84 °F
29 °C
Aug
82 °F
28 °C
Sep
79 °F
26 °C
Oct
59 °F
15 °C
Nov
51 °F
11 °C
Dec
45 °F
7 °C
Humidity
Jan
47%
Feb
54%
Mar
55%
Apr
50%
May
60%
Jun
46%
Jul
45%
Aug
41%
Sep
36%
Oct
37%
Nov
57%
Dec
46%
Rain
Jan
25mm
Feb
14mm
Mar
36mm
Apr
21mm
May
39mm
Jun
80mm
Jul
40mm
Aug
20mm
Sep
22mm
Oct
14mm
Nov
11mm
Dec
4mm
Clouds
Jan
35%
Feb
34%
Mar
39%
Apr
43%
May
46%
Jun
34%
Jul
20%
Aug
21%
Sep
21%
Oct
19%
Nov
34%
Dec
38%
Air quality US AQI
Jan
26
Feb
18
Mar
16
Apr
17
May
20
Jun
23
Jul
23
Aug
28
Sep
24
Oct
22
Nov
26
Dec
29
Sun
Jan
2UVI
Feb
3UVI
Mar
5UVI
Apr
7UVI
May
7UVI
Jun
8UVI
Jul
11UVI
Aug
9UVI
Sep
8UVI
Oct
5UVI
Nov
3UVI
Dec
2UVI