S
M
T
W
T
F
S
29
68°
40°
30
84°
59°
31
83°
54°
1
54°
43°
2
74°
48°
3
80°
54°
4
72°
40°
5
57°
38°
6
59°
40°
7
47°
35°
8
75°
44°
9
81°
57°
10
67°
44°
11
69°
39°
12
82°
62°
13
84°
66°
14
87°
62°
15
74°
63°
16
82°
60°
17
85°
59°
18
61°
39°
19
63°
36°
20
62°
32°
21
80°
51°
22
80°
57°
23
84°
62°
24
75°
48°
25
76°
53°
26
76°
63°
27
71°
47°
28
64°
45°
29
63°
49°
30
59°
45°
1
55°
37°
2
62°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Lake Petersburg
Lake Petersburg's April 2026 forecast shows daily high temperatures ranging from 55° to 84°, with overnight lows between 37° and 63°. The average high for April is 70° with an average low of 50°. 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 Lake Petersburg. See also: May | June | July.