S
M
T
W
T
F
S
31
52°
43°
1
57°
41°
2
59°
45°
3
74°
43°
4
74°
52°
5
80°
46°
6
73°
54°
7
58°
41°
8
76°
34°
9
70°
49°
10
59°
45°
11
71°
47°
12
75°
43°
13
59°
37°
14
70°
43°
15
78°
54°
16
85°
54°
17
71°
42°
18
78°
44°
19
82°
52°
20
75°
45°
21
70°
46°
22
70°
45°
23
76°
46°
24
80°
49°
25
81°
50°
26
75°
44°
27
78°
50°
28
77°
49°
29
70°
44°
30
77°
50°
1
77°
44°
2
71°
46°
3
79°
50°
4
80°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Boulder
Boulder's June 2026 forecast shows daily high temperatures ranging from 59° to 85°, with overnight lows between 37° and 54°. The average high for June is 75° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Boulder. See also: July | August | September.
