S
M
T
W
T
F
S
26
31°
17°
27
46°
16°
28
58°
22°
29
64°
24°
30
73°
30°
1
76°
34°
2
71°
43°
3
73°
40°
4
57°
38°
5
53°
26°
6
71°
26°
7
75°
45°
8
75°
38°
9
71°
46°
10
78°
46°
11
68°
46°
12
79°
34°
13
77°
48°
14
72°
49°
15
66°
36°
16
47°
39°
17
57°
31°
18
63°
38°
19
69°
35°
20
57°
40°
21
69°
46°
22
74°
48°
23
80°
43°
24
76°
50°
25
86°
47°
26
92°
49°
27
84°
61°
28
90°
55°
29
92°
63°
30
73°
56°
31
61°
43°
1
51°
43°
2
52°
48°
3
62°
49°
4
69°
48°
5
75°
44°
6
69°
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 69° to 75°, with overnight lows between 44° and 48°. The average high for May is 71° with an average low of 45°. 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.