S
M
T
W
T
F
S
26
51°
35°
27
51°
33°
28
52°
34°
29
53°
33°
30
52°
33°
1
54°
32°
2
52°
34°
3
53°
36°
4
54°
34°
5
54°
34°
6
55°
36°
7
57°
37°
8
58°
38°
9
57°
37°
10
56°
36°
11
57°
36°
12
58°
45°
13
62°
41°
14
57°
42°
15
58°
43°
16
68°
43°
17
60°
41°
18
63°
42°
19
63°
50°
20
72°
46°
21
72°
43°
22
62°
40°
23
63°
41°
24
64°
44°
25
67°
44°
26
74°
51°
27
75°
45°
28
73°
51°
29
71°
50°
30
70°
51°
31
67°
44°
1
72°
42°
2
67°
41°
3
64°
42°
4
65°
49°
5
68°
52°
6
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in East Gwillimbury
East Gwillimbury's May 2026 forecast shows daily high temperatures ranging from 51° to 75°, with overnight lows between 32° and 52°. The average high for May is 62° 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 East Gwillimbury. See also: June | July | August.
