S
M
T
W
T
F
S
28
82°
54°
29
83°
53°
30
84°
54°
1
91°
65°
2
90°
63°
3
89°
69°
4
82°
68°
5
81°
59°
6
77°
64°
7
70°
54°
8
82°
50°
9
86°
58°
10
81°
61°
11
81°
54°
12
81°
49°
13
84°
54°
14
87°
60°
15
80°
58°
16
80°
54°
17
76°
59°
18
78°
62°
19
76°
51°
20
78°
62°
21
74°
65°
22
74°
56°
23
77°
58°
24
78°
60°
25
78°
62°
26
76°
59°
27
73°
58°
28
73°
59°
29
76°
58°
30
73°
57°
31
73°
61°
1
74°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
July Weather in Petersburgh
Petersburgh's July 2026 forecast shows daily high temperatures ranging from 73° to 80°, with overnight lows between 51° and 65°. The average high for July is 76° with an average low of 59°. 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 Petersburgh. See also: August | September | October.
