S
M
T
W
T
F
S
29
50°
27°
30
65°
36°
31
59°
33°
1
36°
29°
2
44°
28°
3
68°
35°
4
48°
34°
5
48°
32°
6
39°
27°
7
28°
18°
8
46°
16°
9
66°
30°
10
39°
30°
11
47°
29°
12
45°
29°
13
64°
37°
14
69°
41°
15
59°
41°
16
64°
47°
17
67°
47°
18
62°
35°
19
40°
27°
20
38°
25°
21
55°
25°
22
65°
33°
23
69°
33°
24
54°
41°
25
52°
34°
26
62°
31°
27
65°
51°
28
61°
41°
29
47°
37°
30
43°
35°
1
43°
33°
2
41°
34°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
April Weather in Penetanguishene
Penetanguishene's April 2026 forecast shows daily high temperatures ranging from 41° to 65°, with overnight lows between 33° and 51°. The average high for April is 50° with an average low of 39°. 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 Penetanguishene. See also: May | June | July.