S
M
T
W
T
F
S
26
52°
32°
27
53°
31°
28
56°
34°
29
58°
32°
30
63°
33°
1
65°
38°
2
70°
43°
3
69°
41°
4
64°
42°
5
66°
44°
6
67°
43°
7
65°
44°
8
64°
45°
9
65°
41°
10
68°
44°
11
58°
35°
12
58°
35°
13
59°
36°
14
67°
41°
15
70°
45°
16
71°
47°
17
72°
47°
18
70°
46°
19
72°
47°
20
72°
47°
21
71°
46°
22
72°
48°
23
67°
43°
24
69°
44°
25
73°
48°
26
74°
49°
27
75°
50°
28
75°
49°
29
74°
51°
30
75°
51°
31
74°
50°
1
74°
50°
2
73°
49°
3
74°
51°
4
75°
50°
5
70°
50°
6
66°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rexburg
Rexburg's May 2026 forecast shows daily high temperatures ranging from 52° to 75°, with overnight lows between 31° and 51°. 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 Rexburg. See also: June | July | August.