S
M
T
W
T
F
S
31
76°
49°
1
85°
48°
2
88°
54°
3
77°
60°
4
76°
56°
5
69°
56°
6
65°
48°
7
70°
45°
8
62°
54°
9
69°
56°
10
71°
54°
11
83°
45°
12
84°
59°
13
90°
52°
14
94°
51°
15
98°
55°
16
86°
66°
17
86°
56°
18
89°
59°
19
92°
61°
20
83°
58°
21
91°
58°
22
95°
64°
23
100°
67°
24
93°
60°
25
87°
61°
26
82°
57°
27
84°
59°
28
88°
60°
29
89°
61°
30
96°
68°
1
78°
57°
2
84°
62°
3
86°
63°
4
86°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in Petersburg
Petersburg's June 2026 forecast shows daily high temperatures ranging from 78° to 100°, with overnight lows between 56° and 68°. The average high for June is 88° with an average low of 61°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in Petersburg. See also: July | August | September.