S
M
T
W
T
F
S
28
72°
55°
29
77°
59°
30
79°
61°
1
81°
64°
2
79°
61°
3
82°
64°
4
84°
68°
5
82°
68°
6
82°
66°
7
84°
66°
8
84°
64°
9
88°
68°
10
88°
72°
11
90°
75°
12
82°
72°
13
86°
73°
14
93°
71°
15
95°
69°
16
92°
65°
17
91°
66°
18
89°
65°
19
87°
64°
20
89°
66°
21
88°
68°
22
93°
71°
23
94°
67°
24
91°
69°
25
91°
67°
26
93°
68°
27
89°
59°
28
91°
62°
29
88°
61°
30
86°
58°
31
85°
58°
1
85°
60°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Grass Valley
Grass Valley's July 2026 forecast shows daily high temperatures ranging from 85° to 95°, with overnight lows between 58° and 71°. The average high for July is 90° with an average low of 65°. 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 Grass Valley. See also: August | September | October.
