S
M
T
W
T
F
S
26
41°
19°
27
49°
15°
28
58°
24°
29
61°
21°
30
69°
21°
1
77°
42°
2
66°
39°
3
76°
44°
4
57°
33°
5
55°
28°
6
68°
44°
7
71°
44°
8
73°
42°
9
72°
40°
10
73°
44°
11
67°
42°
12
68°
43°
13
72°
45°
14
71°
44°
15
60°
37°
16
61°
37°
17
62°
38°
18
71°
45°
19
63°
44°
20
62°
42°
21
62°
41°
22
68°
45°
23
63°
42°
24
64°
40°
25
66°
44°
26
73°
47°
27
73°
49°
28
74°
48°
29
64°
45°
30
65°
44°
31
66°
50°
1
71°
50°
2
68°
49°
3
71°
51°
4
72°
52°
5
67°
51°
6
67°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Havre
Havre's May 2026 forecast shows daily high temperatures ranging from 55° to 77°, with overnight lows between 28° and 52°. The average high for May is 68° with an average low of 44°. 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 Havre. See also: June | July | August.