S
M
T
W
T
F
S
31
79°
55°
1
77°
49°
2
78°
48°
3
81°
57°
4
85°
64°
5
84°
64°
6
82°
62°
7
84°
63°
8
82°
62°
9
82°
62°
10
83°
63°
11
82°
61°
12
80°
59°
13
78°
60°
14
80°
57°
15
73°
53°
16
72°
53°
17
73°
54°
18
75°
61°
19
79°
59°
20
80°
62°
21
78°
61°
22
80°
63°
23
80°
62°
24
78°
58°
25
78°
63°
26
84°
64°
27
81°
60°
28
76°
57°
29
76°
56°
30
77°
57°
1
79°
64°
2
82°
65°
3
82°
64°
4
77°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Fitchburg
Fitchburg's June 2026 forecast shows daily high temperatures ranging from 72° to 85°, with overnight lows between 48° and 65°. The average high for June is 79° with an average low of 60°. 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 Fitchburg. See also: July | August | September.