S
M
T
W
T
F
S
26
52°
25°
27
48°
32°
28
43°
27°
29
45°
28°
30
39°
25°
1
55°
23°
2
68°
36°
3
73°
30°
4
45°
32°
5
36°
28°
6
46°
28°
7
55°
23°
8
63°
36°
9
54°
32°
10
54°
27°
11
68°
32°
12
70°
39°
13
75°
32°
14
77°
57°
15
72°
41°
16
52°
34°
17
48°
32°
18
43°
36°
19
48°
33°
20
65°
43°
21
66°
47°
22
60°
44°
23
66°
47°
24
76°
50°
25
81°
56°
26
77°
54°
27
76°
50°
28
75°
52°
29
78°
55°
30
76°
53°
31
73°
51°
1
70°
49°
2
66°
53°
3
71°
51°
4
73°
55°
5
73°
55°
6
67°
53°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sarnia Township
Sarnia Township's May 2026 forecast shows daily high temperatures ranging from 48° to 81°, with overnight lows between 33° and 56°. The average high for May 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 May weather will actually feel in Sarnia Township. See also: June | July | August.
