S
M
T
W
T
F
S
26
41°
22°
27
44°
19°
28
55°
26°
29
55°
30°
30
65°
29°
1
69°
32°
2
69°
42°
3
77°
38°
4
54°
34°
5
49°
27°
6
57°
21°
7
68°
33°
8
76°
37°
9
66°
39°
10
73°
43°
11
78°
47°
12
74°
38°
13
89°
47°
14
71°
48°
15
68°
41°
16
66°
36°
17
52°
38°
18
48°
34°
19
66°
29°
20
65°
43°
21
64°
41°
22
69°
39°
23
76°
39°
24
84°
48°
25
90°
48°
26
98°
64°
27
96°
66°
28
93°
69°
29
93°
62°
30
79°
61°
31
59°
45°
1
56°
46°
2
65°
47°
3
69°
47°
4
76°
51°
5
82°
56°
6
88°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Peck
Fort Peck's May 2026 forecast shows daily high temperatures ranging from 56° to 88°, with overnight lows between 45° and 61°. The average high for May is 71° 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 Fort Peck. See also: June | July | August.
