S
M
T
W
T
F
S
28
91°
72°
29
79°
64°
30
81°
61°
1
75°
61°
2
75°
55°
3
72°
54°
4
70°
52°
5
68°
59°
6
72°
59°
7
73°
59°
8
73°
55°
9
73°
57°
10
83°
58°
11
85°
60°
12
86°
59°
13
86°
62°
14
89°
65°
15
88°
64°
16
89°
66°
17
85°
64°
18
83°
62°
19
78°
58°
20
74°
58°
21
75°
57°
22
76°
57°
23
69°
54°
24
71°
55°
25
71°
58°
26
70°
56°
27
75°
59°
28
74°
57°
29
70°
56°
30
69°
56°
31
70°
58°
1
73°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Letter
Letter's July 2026 forecast shows daily high temperatures ranging from 69° to 89°, with overnight lows between 54° and 66°. The average high for July is 78° with an average low of 59°. 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 Letter. See also: August | September | October.