S
M
T
W
T
F
S
28
84°
55°
29
86°
56°
30
87°
59°
1
90°
61°
2
86°
56°
3
85°
61°
4
88°
60°
5
80°
57°
6
79°
55°
7
80°
52°
8
82°
57°
9
86°
60°
10
85°
59°
11
88°
62°
12
93°
64°
13
94°
65°
14
93°
66°
15
94°
65°
16
94°
65°
17
93°
66°
18
94°
66°
19
95°
65°
20
95°
66°
21
94°
65°
22
95°
66°
23
95°
66°
24
94°
65°
25
95°
66°
26
95°
66°
27
93°
61°
28
94°
63°
29
95°
65°
30
96°
63°
31
92°
59°
1
92°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grand Coulee
Grand Coulee's July 2026 forecast shows daily high temperatures ranging from 79° to 96°, with overnight lows between 52° and 66°. The average high for July is 90° with an average low of 62°. 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 Grand Coulee. See also: August | September | October.
