S
M
T
W
T
F
S
28
83°
66°
29
84°
67°
30
84°
66°
1
86°
71°
2
91°
73°
3
91°
73°
4
87°
71°
5
87°
73°
6
91°
73°
7
92°
74°
8
93°
74°
9
92°
74°
10
93°
73°
11
88°
69°
12
84°
71°
13
86°
72°
14
86°
68°
15
87°
69°
16
86°
72°
17
87°
74°
18
87°
74°
19
91°
73°
20
90°
72°
21
86°
70°
22
86°
73°
23
87°
72°
24
93°
67°
25
90°
67°
26
86°
66°
27
87°
67°
28
87°
67°
29
88°
68°
30
87°
68°
31
86°
69°
1
86°
68°
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 83° to 93°, with overnight lows between 66° and 74°. The average high for July is 88° with an average low of 70°. 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.