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October Weather in Pierre, United States

Last updated: June 24, 2025

The average temperature in Pierre, United States during October is 9°C (48°F), with extremes ranging from a chilling -16°C (4°F) to a sweltering 30°C (86°F). Expect approximately 54 mm (2.1 in) of precipitation over about 7 days, and stay prepared for a relatively high average humidity of 71%.

October Temperature in Pierre

In October in Pierre, the average temperature is 9°C (48°F), with maximums reaching up to 30°C (86°F) and minimums dropping as low as -16°C (4°F). Be sure to pack for a wide range of temperatures when traveling during this time.

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

The chart illustrates October temperature patterns in Pierre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pierre, October typically has an average temperature of 9°C (48°F), with highs reaching up to 30°C (86°F) and lows dropping to around -16°C (4°F).
JanFebMarAprMayJunJulAugSepOctNovDec201934445973787466473627
Data source: Temperature data for Pierre 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 Pierre

In Pierre in October, the precipitation amount is 54 mm (2.1 in) over a duration of 7 days.

October Precipitation Trends in Pierre

The chart displays monthly precipitation patterns in Pierre, 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 Pierre, October typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec151938497862865360541126
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Pierre

In Pierre in October humidity is 71%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor exploration brisk and invigorating, yet slightly uncomfortable unless you’re dressed warmly.

October Average Humidity in Pierre

This chart illustrates the average monthly humidity levels in Pierre, 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 Pierre is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec78%81%72%73%75%82%83%82%73%71%78%76%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Pierre

In Pierre 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 Pierre.

Maximum UV Index Levels in Pierre for October

The chart shows the monthly maximum UV Index (UVI) for Pierre 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 Pierre typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec25579101098532
Data source: Pierre 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 Pierre Compares to Other Months

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

This table compares monthly weather conditions in Pierre, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (20°F)15 mm (0.6 inches)78%low
February Weather-7°C (19°F)19 mm (0.8 inches)81%moderate
March Weather1°C (34°F)38 mm (1.5 inches)71%moderate
April Weather7°C (44°F)49 mm (1.9 inches)73%high
May Weather15°C (59°F)78 mm (3.1 inches)75%very high
June Weather23°C (73°F)62 mm (2.4 inches)82%very high
July Weather25°C (78°F)86 mm (3.4 inches)83%very high
August Weather23°C (74°F)53 mm (2.1 inches)82%very high
September Weather19°C (66°F)60 mm (2.3 inches)73%very high
October Weather9°C (48°F)54 mm (2.1 inches)71%moderate
November Weather2°C (36°F)11 mm (0.4 inches)78%moderate
December Weather-3°C (27°F)26 mm (1.0 inches)76%low

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