S
M
T
W
T
F
S
28
81°
62°
29
84°
63°
30
88°
69°
1
95°
74°
2
103°
76°
3
98°
75°
4
92°
74°
5
87°
68°
6
82°
69°
7
85°
69°
8
84°
65°
9
83°
68°
10
84°
70°
11
87°
66°
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 103°, with overnight lows between 62° and 76°. The average high for July is 84° 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.