S
M
T
W
T
F
S
29
70°
38°
30
77°
56°
31
82°
65°
1
73°
61°
2
79°
60°
3
82°
67°
4
73°
46°
5
57°
40°
6
62°
37°
7
54°
42°
8
71°
39°
9
77°
56°
10
76°
53°
11
75°
50°
12
81°
59°
13
80°
71°
14
85°
69°
15
N/A
16
82°
57°
17
83°
63°
18
69°
42°
19
62°
42°
20
68°
44°
21
73°
49°
22
74°
49°
23
73°
51°
24
70°
45°
25
66°
47°
26
62°
42°
27
63°
44°
28
67°
46°
29
63°
46°
30
65°
48°
1
66°
46°
2
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
April Weather in Petersburg
Petersburg's April 2026 forecast shows daily high temperatures ranging from 62° to 83°, with overnight lows between 42° and 63°. The average high for April is 69° with an average low of 47°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how April weather will actually feel in Petersburg. See also: May | June | July.