Bismarck (ND)
August
Weather in Bismarck, North Dakota for August 2026
Your guide to Bismarck weather in August - trends and predictions
In general, the average temperature in Bismarck at the beginning of August is 27 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 26.9 °F by the end of August.
With an average of 5 rainy days, Bismarck experiences minimal rainfall in August.
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Temperatures
Rain 🌧️
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26
Dry days
5
Rainy days
0
Snow days
27°/16°
Temperatures
21 km/h
Avg max wind
66 %
Avg humidity
Bismarck Weather August
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Temperatures trend during August in Bismarck
See the weather trend as well as the moving average line
August weather in Bismarck day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 |  Partly cloudy | 27° /14° | 0 mm | 10 | |
| Aug. 2 |  Overcast | 19° /16° | 0.1 mm | 2 | |
| Aug. 3 |  Mist | 24° /16° | 0 mm | 3 | |
| Aug. 4 | Fog | 29° /18° | 0 mm | 8 | |
| Aug. 5 |  Moderate or heavy rain shower | 24° /18° | 17.3 mm | 5 | |
| Aug. 6 | Fog | 32° /18° | 0 mm | 9 | |
| Aug. 7 |  Thundery outbreaks possible | 34° /20° | 36.7 mm | 9 | |
| Aug. 8 |  Moderate or heavy rain with thunder | 20° /17° | 64.3 mm | 2 | |
| Aug. 9 |  Cloudy | 25° /14° | 0 mm | 9 | |
| Aug. 10 |  Sunny | 27° /14° | 0 mm | 9 | |
| Aug. 11 | Sunny | 31° /17° | 0 mm | 9 | |
| Aug. 12 | Partly cloudy | 26° /14° | 0 mm | 8 | |
| Aug. 13 | Sunny | 32° /16° | 0 mm | 8 | |
| Aug. 14 | Fog | 35° /18° | 0 mm | 9 | |
| Aug. 15 | Overcast | 29° /17° | 0 mm | 8 | |
| Aug. 16 | Thundery outbreaks possible | 25° /18° | 0 mm | 2 | |
| Aug. 17 |  Heavy rain | 27° /18° | 29.6 mm | 5 | |
| Aug. 18 |  Light rain shower | 28° /16° | 2.6 mm | 4 | |
| Aug. 19 | Thundery outbreaks possible | 32° /20° | 0 mm | 8 | |
| Aug. 20 | Sunny | 34° /21° | 0 mm | 8 | |
| Aug. 21 | Thundery outbreaks possible | 31° /21° | 0 mm | 7 | |
| Aug. 22 | Overcast | 27° /17° | 0 mm | 8 | |
| Aug. 23 | Cloudy | 21° /10° | 0 mm | 7 | |
| Aug. 24 | Mist | 21° /9° | 0 mm | 7 | |
| Aug. 25 | Sunny | 23° /10° | 0 mm | 7 | |
| Aug. 26 | Sunny | 26° /11° | 0 mm | 7 | |
| Aug. 27 | Sunny | 29° /14° | 0 mm | 7 | |
| Aug. 28 | Partly cloudy | 28° /15° | 0 mm | 7 | |
| Aug. 29 | Cloudy | 28° /15° | 0 mm | 7 | |
| Aug. 30 | Thundery outbreaks possible | 27° /17° | 0 mm | 4 | |
| Aug. 31 | Mist | 27° /16° | 0 mm | 7 | |
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Important Notice
Our weather forecast for Bismarck in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Bismarck forecast closer to your planned date for the most up-to-date weather information.
Change Month
Bismarck in August - FAQ
What are the expected maximum and minimum temperatures in Bismarck during August?
During August, expect a variety of temperatures with highs around 27° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Bismarck during August?
Significant rainfall exceeding 150.6 mm is expected in Bismarck during August, occurring over more than 5 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Bismarck during August?
The average wind speed in Bismarck during August is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
August rainfall patterns in Bismarck
Explore the daily rainfall trends and prepare for Bismarcks August weather 💧
Typically, Bismarck has 5 rainy days in August with a total of 150.6 mm of rainfall.
UV exposure in Bismarck during August
Stay informed about UV levels for safe outdoor activities throughout the month of August ☀️
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