S
M
T
W
T
F
S
26
31°
13°
27
47°
9°
28
58°
18°
29
63°
22°
30
72°
24°
1
65°
28°
2
72°
28°
3
69°
32°
4
58°
39°
5
55°
33°
6
73°
28°
7
71°
34°
8
68°
35°
9
69°
40°
10
70°
36°
11
64°
37°
12
71°
27°
13
72°
36°
14
65°
34°
15
59°
34°
16
44°
34°
17
47°
24°
18
55°
27°
19
61°
34°
20
62°
32°
21
70°
35°
22
69°
37°
23
61°
36°
24
61°
34°
25
65°
38°
26
67°
40°
27
71°
41°
28
58°
39°
29
56°
35°
30
60°
40°
31
63°
42°
1
62°
42°
2
60°
40°
3
58°
37°
4
58°
41°
5
57°
37°
6
57°
38°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Red Deer County
Red Deer County's May 2026 forecast shows daily high temperatures ranging from 44° to 71°, with overnight lows between 24° and 42°. The average high for May is 60° with an average low of 36°. 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 Red Deer County. See also: June | July | August.