S
M
T
W
T
F
S
26
68°
28°
27
71°
31°
28
64°
47°
29
53°
39°
30
52°
32°
1
49°
34°
2
47°
31°
3
54°
41°
4
64°
47°
5
61°
36°
6
55°
33°
7
52°
33°
8
50°
33°
9
53°
37°
10
57°
38°
11
59°
37°
12
61°
40°
13
60°
40°
14
56°
39°
15
61°
36°
16
60°
36°
17
60°
39°
18
63°
46°
19
65°
46°
20
72°
45°
21
72°
46°
22
66°
40°
23
62°
44°
24
66°
42°
25
62°
41°
26
64°
43°
27
62°
44°
28
64°
49°
29
70°
49°
30
68°
40°
31
67°
39°
1
63°
40°
2
64°
40°
3
66°
41°
4
65°
43°
5
65°
43°
6
66°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Petawawa
Petawawa's May 2026 forecast shows daily high temperatures ranging from 47° to 72°, with overnight lows between 31° and 49°. The average high for May is 61° with an average low of 41°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Petawawa. See also: June | July | August.