S
M
T
W
T
F
S
26
65°
45°
27
75°
40°
28
74°
53°
29
63°
49°
30
52°
41°
1
52°
37°
2
45°
36°
3
59°
35°
4
72°
48°
5
74°
60°
6
62°
47°
7
61°
40°
8
61°
42°
9
68°
50°
10
64°
47°
11
63°
42°
12
70°
41°
13
69°
49°
14
55°
44°
15
69°
42°
16
73°
49°
17
83°
59°
18
89°
64°
19
89°
67°
20
74°
51°
21
65°
49°
22
66°
54°
23
71°
54°
24
74°
57°
25
77°
64°
26
N/A
27
72°
59°
28
74°
47°
29
75°
52°
30
72°
46°
31
69°
44°
1
68°
46°
2
65°
47°
3
68°
51°
4
69°
52°
5
72°
55°
6
73°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Rupert
Rupert's May 2026 forecast shows daily high temperatures ranging from 65° to 75°, with overnight lows between 44° and 59°. The average high for May is 71° with an average low of 51°. 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 Rupert. See also: June | July | August.