S
M
T
W
T
F
S
28
80°
54°
29
84°
57°
30
85°
66°
1
91°
65°
2
89°
66°
3
86°
63°
4
78°
61°
5
75°
60°
6
76°
60°
7
78°
59°
8
80°
59°
9
81°
61°
10
82°
55°
11
73°
59°
12
73°
58°
13
73°
52°
14
71°
52°
15
71°
51°
16
72°
53°
17
73°
54°
18
74°
56°
19
76°
59°
20
79°
59°
21
80°
60°
22
80°
60°
23
79°
59°
24
80°
60°
25
80°
59°
26
81°
60°
27
82°
60°
28
81°
60°
29
80°
58°
30
79°
56°
31
72°
51°
1
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Washington
Washington's July 2026 forecast shows daily high temperatures ranging from 71° to 91°, with overnight lows between 51° and 66°. The average high for July is 78° 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 Washington. See also: August | September | October.