S
M
T
W
T
F
S
26
59°
36°
27
62°
37°
28
64°
40°
29
64°
40°
30
65°
41°
1
67°
42°
2
67°
42°
3
66°
43°
4
64°
42°
5
67°
43°
6
65°
38°
7
57°
35°
8
56°
35°
9
62°
38°
10
67°
44°
11
65°
40°
12
67°
45°
13
69°
45°
14
70°
44°
15
66°
41°
16
68°
44°
17
68°
45°
18
65°
43°
19
62°
44°
20
62°
44°
21
61°
41°
22
62°
39°
23
60°
41°
24
64°
46°
25
67°
44°
26
68°
47°
27
73°
49°
28
73°
49°
29
72°
43°
30
71°
46°
31
72°
49°
1
69°
48°
2
67°
48°
3
71°
49°
4
69°
48°
5
65°
45°
6
65°
44°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Drumheller
Drumheller's May 2026 forecast shows daily high temperatures ranging from 56° to 73°, with overnight lows between 35° and 49°. The average high for May is 66° with an average low of 43°. 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 Drumheller. See also: June | July | August.