S
M
T
W
T
F
S
26
42°
27°
27
33°
24°
28
48°
23°
29
51°
29°
30
55°
26°
1
63°
32°
2
70°
41°
3
66°
39°
4
55°
36°
5
46°
22°
6
53°
21°
7
61°
37°
8
67°
38°
9
61°
44°
10
73°
38°
11
82°
50°
12
71°
41°
13
93°
49°
14
73°
44°
15
68°
40°
16
72°
40°
17
49°
35°
18
41°
27°
19
58°
22°
20
66°
35°
21
43°
35°
22
N/A
23
55°
39°
24
62°
40°
25
64°
44°
26
66°
40°
27
61°
39°
28
61°
39°
29
63°
37°
30
55°
38°
31
62°
41°
1
64°
42°
2
66°
42°
3
67°
41°
4
65°
42°
5
57°
35°
6
59°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Powder River Pass
Powder River Pass's May 2026 forecast shows daily high temperatures ranging from 55° to 67°, with overnight lows between 35° and 44°. The average high for May is 62° with an average low of 40°. 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 Powder River Pass. See also: June | July | August.