S
M
T
W
T
F
S
26
29°
20°
27
41°
17°
28
50°
23°
29
59°
29°
30
68°
32°
1
64°
40°
2
68°
32°
3
59°
41°
4
44°
30°
5
49°
22°
6
61°
29°
7
68°
45°
8
62°
38°
9
62°
35°
10
73°
45°
11
65°
47°
12
71°
45°
13
74°
47°
14
52°
31°
15
40°
29°
16
47°
31°
17
55°
35°
18
58°
38°
19
60°
39°
20
62°
38°
21
65°
39°
22
62°
38°
23
60°
41°
24
62°
40°
25
65°
40°
26
60°
44°
27
59°
42°
28
61°
44°
29
67°
43°
30
69°
46°
31
69°
46°
1
63°
44°
2
67°
46°
3
62°
45°
4
62°
44°
5
69°
48°
6
72°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Heart Lake 167
Heart Lake 167's May 2026 forecast shows daily high temperatures ranging from 40° to 74°, with overnight lows between 29° and 50°. 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 Heart Lake 167. See also: June | July | August.