Bismarck Weather & Climate

United States of America

Bismarck sees feels-like daytime highs peak around 31.9°C in July and nighttime lows bottom out near -15.4°C in January. June is the wettest month (~70 mm), while January is the driest (~1 mm). For sunshine, July leads with about 73% clear skies.

Best time to visit Bismarck

Based on mild feels-like temperatures and low rain chances, the most comfortable months are June, August, and September — expect around 14.427°C with roughly 32% chance of rain on a given day in June.

Bismarck climate by month

MonthLow / High °CRain %RainfallClear skiesWind
January-15.4° / -6.6°1%1 mm40%19.2 kph
February-12.7° / -4.4°1%2 mm41%19.2 kph
March-6.1° / 3.8°4%9 mm44%19.6 kph
April1.7° / 13.1°13%26 mm49%19.5 kph
May8.8° / 21.6°26%56 mm52%18.7 kph
June14.4° / 27°32%70 mm62%17.3 kph
July18.1° / 31.9°29%59 mm73%15.8 kph
August16.9° / 30.6°23%44 mm73%16.1 kph
September10.2° / 23.1°17%34 mm64%17.7 kph
October2.7° / 13.4°11%25 mm55%18.7 kph
November-6.3° / 2.3°3%6 mm48%18.6 kph
December-13.5° / -5.4°0%1 mm43%18.8 kph

Feels-like temperatures from long-term historical data; ☀ marks the most comfortable months (mild temperatures, low rain).

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