S
M
T
W
T
F
S
26
54°
37°
27
69°
38°
28
70°
46°
29
48°
39°
30
48°
35°
1
45°
37°
2
46°
34°
3
64°
35°
4
74°
46°
5
65°
45°
6
46°
39°
7
52°
36°
8
63°
36°
9
68°
40°
10
58°
34°
11
48°
34°
12
61°
30°
13
59°
43°
14
56°
36°
15
68°
36°
16
75°
50°
17
83°
54°
18
88°
64°
19
85°
44°
20
51°
42°
21
53°
40°
22
N/A
23
56°
52°
24
65°
52°
25
74°
55°
26
79°
53°
27
71°
49°
28
62°
49°
29
68°
48°
30
66°
53°
31
68°
53°
1
67°
54°
2
71°
54°
3
69°
53°
4
73°
55°
5
72°
66°
6
70°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Sarnia Indian Reserve No. 45
Sarnia Indian Reserve No. 45's May 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 48° and 66°. The average high for May is 69° with an average low of 54°. 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 Indian Reserve No. 45. See also: June | July | August.
