S
M
T
W
T
F
S
26
32°
20°
27
45°
18°
28
52°
23°
29
60°
30°
30
71°
34°
1
62°
42°
2
69°
33°
3
61°
43°
4
52°
34°
5
52°
24°
6
65°
33°
7
70°
46°
8
65°
40°
9
66°
43°
10
70°
48°
11
64°
46°
12
69°
43°
13
68°
47°
14
58°
45°
15
55°
37°
16
48°
34°
17
53°
28°
18
61°
33°
19
63°
37°
20
55°
41°
21
66°
36°
22
68°
49°
23
74°
46°
24
66°
47°
25
77°
47°
26
77°
48°
27
78°
57°
28
83°
55°
29
84°
56°
30
69°
50°
31
N/A
1
50°
45°
2
51°
45°
3
62°
48°
4
73°
53°
5
67°
47°
6
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Westlock
Westlock's May 2026 forecast shows daily high temperatures ranging from 50° to 73°, with overnight lows between 45° and 53°. The average high for May is 61° with an average low of 47°. 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 Westlock. See also: June | July | August.