S
M
T
W
T
F
S
31
52°
43°
1
57°
41°
2
59°
45°
3
74°
43°
4
71°
41°
5
82°
47°
6
72°
43°
7
50°
35°
8
62°
46°
9
66°
45°
10
62°
40°
11
55°
38°
12
64°
42°
13
70°
46°
14
72°
43°
15
70°
45°
16
71°
44°
17
72°
44°
18
70°
43°
19
76°
47°
20
72°
40°
21
73°
45°
22
77°
49°
23
77°
48°
24
68°
40°
25
69°
45°
26
74°
49°
27
72°
49°
28
74°
47°
29
78°
49°
30
80°
50°
1
81°
50°
2
82°
51°
3
81°
52°
4
82°
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 50° to 82°, with overnight lows between 35° and 52°. The average high for June is 72° with an average low of 45°. 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.
