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
28°
16°
19
44°
27°
20
48°
29°
21
36°
22°
22
42°
29°
23
58°
35°
24
65°
38°
25
67°
40°
26
55°
35°
27
59°
35°
28
63°
37°
29
69°
40°
30
58°
36°
31
55°
34°
1
50°
38°
2
51°
34°
3
52°
35°
4
60°
38°
5
56°
39°
6
51°
35°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Powder River Pass
Powder River Pass's May 2026 forecast shows daily high temperatures ranging from 28° to 69°, with overnight lows between 16° and 40°. The average high for May is 53° with an average low of 34°. 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.