S
M
T
W
T
F
S
26
36°
28°
27
51°
23°
28
57°
34°
29
61°
32°
30
66°
36°
1
73°
39°
2
69°
42°
3
75°
39°
4
55°
35°
5
49°
28°
6
72°
27°
7
68°
48°
8
77°
46°
9
66°
47°
10
80°
46°
11
75°
49°
12
78°
41°
13
89°
48°
14
64°
49°
15
65°
46°
16
57°
44°
17
45°
36°
18
54°
32°
19
64°
34°
20
57°
43°
21
58°
40°
22
66°
37°
23
75°
39°
24
87°
49°
25
92°
56°
26
92°
58°
27
77°
55°
28
84°
55°
29
82°
59°
30
75°
49°
31
84°
48°
1
76°
51°
2
78°
52°
3
80°
51°
4
79°
53°
5
79°
50°
6
74°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Fort Benton
Fort Benton's May 2026 forecast shows daily high temperatures ranging from 74° to 92°, with overnight lows between 47° and 59°. The average high for May is 81° with an average low of 52°. 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 Benton. See also: June | July | August.
