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August Weather in Bismarck, United States

Last updated: June 24, 2025

The average temperature in Bismarck, United States during August is a pleasant 24°C (75°F). Expect minimums around 12°C (53°F) and maximums soaring to 34°C (94°F). You'll encounter precipitation totaling 111 mm (4.4 in) over 10 days, accompanied by a notable average humidity of 81%.

August Temperature in Bismarck

In August in Bismarck, the average temperature is 24°C (75°F). Maximums can reach 34°C (94°F) and minimums can be as low as 12°C (53°F). This makes Bismarck an ideal destination for travelers seeking warm weather while still enjoying cooler evenings.

August Weather in Bismarck: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Bismarck, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bismarck, August typically has an average temperature of 24°C (75°F), with highs reaching up to 34°C (94°F) and lows dropping to around 12°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec293142526474777470574135
Data source: Temperature data for Bismarck generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Bismarck

In Bismarck in August, the precipitation amount is 111 mm (4.4 in) over a span of 10 days.

August Precipitation Trends in Bismarck

The chart displays monthly precipitation patterns in Bismarck, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Bismarck, August typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec777811011015110588111711217760
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Bismarck

In Bismarck in August humidity is 81%. With an average temperature of 24°C (75°F), this humidity feels like a warm, thick blanket enveloping you, making traveling a bit sticky and sweaty, yet still inviting for those who enjoy the rich, tropical atmosphere.

August Average Humidity in Bismarck

This chart illustrates the average monthly humidity levels in Bismarck, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Bismarck is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%83%84%85%79%82%80%81%80%82%88%84%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Bismarck

In Bismarck in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Bismarck.

Maximum UV Index Levels in Bismarck for August

The chart shows the monthly maximum UV Index (UVI) for Bismarck in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In August, the maximum UV index in Bismarck typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098642
Data source: Bismarck August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How August Weather in Bismarck Compares to Other Months

Weather in Bismarck varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in Bismarck, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bismarck, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)77 mm (3.0 inches)82%moderate
February Weather0°C (31°F)78 mm (3.1 inches)83%moderate
March Weather6°C (42°F)110 mm (4.3 inches)84%high
April Weather11°C (52°F)110 mm (4.3 inches)85%very high
May Weather18°C (65°F)151 mm (6.0 inches)79%very high
June Weather23°C (74°F)105 mm (4.1 inches)82%extreme
July Weather25°C (77°F)88 mm (3.5 inches)80%very high
August Weather24°C (75°F)111 mm (4.4 inches)81%very high
September Weather21°C (70°F)71 mm (2.8 inches)80%very high
October Weather14°C (57°F)121 mm (4.7 inches)82%high
November Weather5°C (41°F)77 mm (3.0 inches)88%moderate
December Weather2°C (36°F)60 mm (2.4 inches)84%low

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