S
M
T
W
T
F
S
26
48°
31°
27
43°
27°
28
50°
29°
29
52°
29°
30
49°
31°
1
58°
29°
2
65°
31°
3
68°
39°
4
69°
40°
5
42°
26°
6
50°
24°
7
66°
42°
8
70°
36°
9
68°
40°
10
70°
33°
11
82°
42°
12
83°
48°
13
82°
49°
14
71°
43°
15
73°
42°
16
68°
40°
17
51°
31°
18
40°
32°
19
58°
34°
20
59°
37°
21
63°
43°
22
68°
45°
23
68°
44°
24
67°
44°
25
69°
45°
26
75°
50°
27
76°
52°
28
61°
37°
29
62°
41°
30
65°
44°
31
72°
46°
1
73°
48°
2
74°
49°
3
75°
50°
4
76°
50°
5
73°
46°
6
70°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Rock Springs
Rock Springs's May 2026 forecast shows daily high temperatures ranging from 40° to 76°, with overnight lows between 31° and 52°. The average high for May is 67° with an average low of 43°. 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 Rock Springs. See also: June | July | August.