S
M
T
W
T
F
S
26
42°
33°
27
43°
32°
28
52°
35°
29
59°
31°
30
59°
27°
1
61°
34°
2
80°
39°
3
67°
46°
4
57°
42°
5
51°
32°
6
55°
25°
7
65°
32°
8
73°
39°
9
63°
43°
10
73°
43°
11
92°
46°
12
75°
50°
13
93°
47°
14
82°
44°
15
77°
47°
16
78°
45°
17
60°
45°
18
46°
37°
19
60°
36°
20
65°
41°
21
68°
47°
22
66°
44°
23
77°
51°
24
82°
51°
25
88°
56°
26
87°
48°
27
81°
52°
28
85°
55°
29
84°
54°
30
81°
55°
31
77°
53°
1
73°
48°
2
71°
53°
3
69°
52°
4
76°
54°
5
77°
54°
6
72°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Box Elder
Box Elder's May 2026 forecast shows daily high temperatures ranging from 60° to 88°, with overnight lows between 36° and 56°. The average high for May is 76° with an average low of 50°. 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 Box Elder. See also: June | July | August.