S
M
T
W
T
F
S
28
83°
65°
29
87°
62°
30
88°
67°
1
97°
77°
2
100°
81°
3
101°
79°
4
102°
77°
5
95°
70°
6
86°
70°
7
87°
69°
8
85°
68°
9
86°
70°
10
87°
70°
11
91°
72°
12
92°
72°
13
93°
73°
14
92°
69°
15
82°
65°
16
83°
66°
17
87°
68°
18
86°
69°
19
90°
71°
20
90°
72°
21
85°
72°
22
84°
71°
23
85°
72°
24
85°
72°
25
86°
71°
26
87°
72°
27
89°
72°
28
88°
71°
29
88°
72°
30
90°
73°
31
90°
73°
1
89°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Penn Valley
Penn Valley's July 2026 forecast shows daily high temperatures ranging from 82° to 102°, with overnight lows between 65° and 81°. The average high for July is 89° with an average low of 72°. 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 Penn Valley. See also: August | September | October.