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°
54°
10
80°
58°
11
86°
60°
12
86°
58°
13
87°
61°
14
86°
60°
15
86°
61°
16
88°
62°
17
87°
64°
18
80°
60°
19
76°
57°
20
76°
57°
21
75°
55°
22
72°
56°
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 88°, with overnight lows between 54° and 64°. The average high for July is 77° with an average low of 58°. 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.