S
M
T
W
T
F
S
28
78°
63°
29
86°
65°
30
88°
73°
1
97°
74°
2
98°
76°
3
96°
75°
4
87°
70°
5
83°
68°
6
82°
67°
7
80°
66°
8
81°
68°
9
83°
69°
10
87°
66°
11
79°
69°
12
79°
68°
13
79°
63°
14
78°
62°
15
77°
62°
16
78°
63°
17
79°
64°
18
79°
64°
19
80°
68°
20
80°
69°
21
81°
70°
22
85°
70°
23
82°
69°
24
82°
70°
25
85°
70°
26
86°
71°
27
87°
71°
28
86°
70°
29
85°
70°
30
85°
68°
31
79°
65°
1
78°
65°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Trumbull
Trumbull's July 2026 forecast shows daily high temperatures ranging from 77° to 98°, with overnight lows between 62° and 76°. The average high for July is 83° with an average low of 68°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how July weather will actually feel in Trumbull. See also: August | September | October.