S
M
T
W
T
F
S
26
42°
20°
27
46°
22°
28
46°
27°
29
45°
24°
30
53°
27°
1
61°
21°
2
65°
20°
3
67°
26°
4
66°
26°
5
54°
24°
6
55°
35°
7
63°
36°
8
65°
33°
9
62°
34°
10
64°
32°
11
68°
35°
12
68°
33°
13
65°
32°
14
60°
32°
15
62°
33°
16
63°
31°
17
60°
32°
18
61°
31°
19
53°
27°
20
55°
28°
21
59°
28°
22
66°
39°
23
66°
37°
24
58°
34°
25
64°
36°
26
67°
39°
27
64°
38°
28
57°
36°
29
56°
36°
30
58°
34°
31
63°
38°
1
67°
39°
2
69°
40°
3
70°
41°
4
70°
42°
5
69°
42°
6
71°
43°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in South Park
South Park's May 2026 forecast shows daily high temperatures ranging from 53° to 71°, with overnight lows between 24° and 43°. The average high for May is 63° with an average low of 35°. 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 South Park. See also: June | July | August.