S
M
T
W
T
F
S
26
45°
19°
27
48°
27°
28
42°
21°
29
48°
26°
30
50°
26°
1
67°
25°
2
69°
31°
3
75°
28°
4
46°
32°
5
35°
27°
6
51°
23°
7
58°
15°
8
64°
33°
9
55°
24°
10
57°
18°
11
74°
32°
12
73°
42°
13
81°
34°
14
74°
53°
15
63°
31°
16
47°
31°
17
42°
38°
18
49°
34°
19
51°
32°
20
60°
36°
21
63°
38°
22
69°
42°
23
68°
43°
24
63°
40°
25
62°
40°
26
68°
43°
27
67°
41°
28
61°
42°
29
61°
40°
30
62°
40°
31
61°
36°
1
62°
44°
2
62°
47°
3
71°
47°
4
71°
46°
5
66°
47°
6
69°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Riding Mountain
Riding Mountain's May 2026 forecast shows daily high temperatures ranging from 42° to 74°, with overnight lows between 31° and 53°. 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 Riding Mountain. See also: June | July | August.
