Bismarck Weather Year-Round — Best Time to Visit
Bismarck, United States has cool weather year-round. The best time to visit is August (score: 89/100). Annual average high: 11.6°C, total rainfall: 517mm.
When is the best time to visit Bismarck?
89
August is the best month to visit Bismarck with a travel score of 89/100 (Excellent).
Expect highs of 27°C, 7 rain days, and 11.9 hours of daily sunshine.
View August weather details →Travel Score by Month
44
Jan
48
Feb
55
Mar
66
Apr
74
May
81
Jun
86
Jul
89
Aug
84
Sep
67
Oct
54
Nov
44
Dec
Excellent (80+)
Good (60-79)
Mixed (40-59)
Poor (<40)
What are the average temperatures in Bismarck each month?
11.6°C
Avg High
1.5°C
Avg Low
517mm
Annual Rain
How much rain does Bismarck get?
Bismarck receives 517mm of rain annually. The wettest month is typically June with 88mm, while January is the driest.
What is the weather like each month in Bismarck?
January
44
-6°C
Low: -15°C
4 rain days
Mixed
February
48
-3°C
Low: -13°C
4 rain days
Mixed
March
55
4°C
Low: -7°C
5 rain days
Mixed
April
66
11°C
Low: 0°C
7 rain days
Good
May
74
18°C
Low: 7°C
10 rain days
Good
June
81
24°C
Low: 13°C
10 rain days
Excellent
July
86
28°C
Low: 17°C
9 rain days
Excellent
August
Best time to visit89
27°C
Low: 16°C
7 rain days
Excellent
September
84
22°C
Low: 11°C
6 rain days
Excellent
October
67
13°C
Low: 4°C
6 rain days
Good
November
54
4°C
Low: -4°C
4 rain days
Mixed
December
44
-3°C
Low: -11°C
5 rain days
Mixed
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Data based on 1994–2024 averages · Last updated: 2024-12-31