S
M
T
W
T
F
S
26
59°
33°
27
78°
37°
28
62°
43°
29
48°
39°
30
51°
36°
1
44°
36°
2
44°
32°
3
52°
30°
4
70°
42°
5
51°
36°
6
44°
36°
7
45°
37°
8
53°
37°
9
56°
41°
10
47°
37°
11
48°
32°
12
54°
30°
13
48°
41°
14
58°
39°
15
N/A
16
64°
41°
17
68°
48°
18
86°
60°
19
78°
49°
20
53°
33°
21
55°
36°
22
61°
43°
23
62°
44°
24
66°
47°
25
65°
49°
26
68°
51°
27
67°
50°
28
71°
51°
29
64°
49°
30
68°
46°
31
62°
42°
1
61°
41°
2
61°
42°
3
63°
41°
4
65°
45°
5
68°
51°
6
73°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Georgian Bay
Georgian Bay's May 2026 forecast shows daily high temperatures ranging from 53° to 86°, with overnight lows between 33° and 60°. The average high for May is 66° with an average low of 46°. 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 Georgian Bay. See also: June | July | August.