S
M
T
W
T
F
S
26
57°
48°
27
72°
40°
28
69°
51°
29
67°
56°
30
60°
41°
1
68°
34°
2
55°
40°
3
61°
34°
4
77°
42°
5
83°
45°
6
71°
54°
7
67°
47°
8
71°
34°
9
72°
47°
10
79°
44°
11
67°
41°
12
77°
32°
13
74°
41°
14
56°
44°
15
72°
40°
16
84°
41°
17
89°
57°
18
92°
54°
19
94°
58°
20
92°
60°
21
67°
53°
22
56°
53°
23
56°
49°
24
67°
52°
25
76°
58°
26
74°
64°
27
82°
65°
28
77°
53°
29
83°
47°
30
75°
51°
31
77°
43°
1
74°
46°
2
73°
51°
3
80°
44°
4
85°
46°
5
87°
52°
6
87°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bismarck
Bismarck's May 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for May is ° with an average low of °. 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 Bismarck. See also: June | July | August.
