S
M
T
W
T
F
S
26
49°
30°
27
53°
28°
28
61°
33°
29
54°
36°
30
59°
38°
1
54°
45°
2
60°
42°
3
N/A
4
56°
42°
5
66°
52°
6
63°
52°
7
56°
44°
8
51°
41°
9
57°
40°
10
57°
41°
11
56°
43°
12
57°
43°
13
58°
42°
14
59°
45°
15
59°
44°
16
58°
51°
17
61°
43°
18
56°
45°
19
63°
45°
20
61°
44°
21
61°
46°
22
62°
47°
23
61°
47°
24
61°
46°
25
62°
47°
26
59°
47°
27
62°
46°
28
63°
47°
29
60°
46°
30
59°
47°
31
61°
48°
1
60°
49°
2
63°
48°
3
61°
49°
4
65°
49°
5
60°
48°
6
62°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Summerside
Summerside's May 2026 forecast shows daily high temperatures ranging from 51° to 66°, with overnight lows between 40° and 52°. The average high for May is 60° 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 Summerside. See also: June | July | August.
