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
79°
59°
11
86°
60°
12
86°
56°
13
88°
61°
14
85°
59°
15
87°
60°
16
89°
66°
17
85°
65°
18
80°
60°
19
76°
57°
20
75°
56°
21
79°
58°
22
80°
59°
23
78°
60°
24
71°
55°
25
77°
60°
26
74°
59°
27
77°
58°
28
72°
58°
29
73°
56°
30
75°
58°
31
70°
56°
1
71°
55°
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 70° to 89°, with overnight lows between 55° and 66°. The average high for July is 79° 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.