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October Weather in Bismarck, United States

Last updated: June 24, 2025

In October, the average temperature in Bismarck, United States hovers around 7°C (44°F). However, you can experience a range from a chilly -12°C (11°F) to a warm 30°C (87°F). During this month, expect 56 mm (2.2 in) of precipitation spread over 6 days, with the average humidity sitting at a comfortable 71%.

October Temperature in Bismarck

In October in Bismarck, the average temperature is 7°C (44°F). The maximum can reach 30°C (87°F), and the minimum can be as low as -12°C (11°F). Be prepared for a wide range of temperatures when traveling, as this time of year can bring both warm and chilly days.

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

The chart illustrates October 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, October typically has an average temperature of 7°C (44°F), with highs reaching up to 30°C (87°F) and lows dropping to around -12°C (11°F).
JanFebMarAprMayJunJulAugSepOctNovDec151330405669737061443122
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.

October Precipitation in Bismarck

In Bismarck in October, the precipitation amount is 56 mm (2.2 in) spread over 6 days.

October Precipitation Trends in Bismarck

The chart displays monthly precipitation patterns in Bismarck, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Bismarck, October typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec131626264764655958561522
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Bismarck

In Bismarck in October, humidity is 71%. With an average temperature of 7°C (44°F), this humidity feels like a chilly embrace, making travel slightly uncomfortable; the dampness in the air can create a lingering chill that seeps into your bones, urging you to dress in warm, layered clothing to fully enjoy your adventure.

October Average Humidity in Bismarck

This chart illustrates the average monthly humidity levels in Bismarck, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Bismarck is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%88%78%75%76%79%78%78%69%71%82%84%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Bismarck

In Bismarck in October, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Bismarck.

Maximum UV Index Levels in Bismarck for October

The chart shows the monthly maximum UV Index (UVI) for Bismarck in October, 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 October, the maximum UV index in Bismarck typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2459910997532
Data source: Bismarck October 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 October 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 October’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 October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (15°F)12 mm (0.5 inches)84%low
February Weather-11°C (13°F)16 mm (0.6 inches)88%moderate
March Weather-1°C (30°F)26 mm (1.0 inches)78%moderate
April Weather4°C (40°F)26 mm (1.0 inches)75%very high
May Weather13°C (56°F)47 mm (1.9 inches)76%very high
June Weather21°C (69°F)64 mm (2.5 inches)79%very high
July Weather23°C (74°F)65 mm (2.6 inches)78%very high
August Weather21°C (70°F)59 mm (2.3 inches)78%very high
September Weather16°C (61°F)58 mm (2.3 inches)69%high
October Weather7°C (44°F)56 mm (2.2 inches)71%moderate
November Weather-1°C (31°F)15 mm (0.6 inches)82%moderate
December Weather-6°C (22°F)22 mm (0.9 inches)84%low

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