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September Weather in Richardton, United States

Last updated: June 24, 2025

In September, the average temperature in Richardton, United States hovers around 16°C (60°F), with fluctuations that can dip as low as -2°C (30°F) and soar up to a sweltering 36°C (97°F). During this month, expect around 57 mm (2.3 in) of precipitation over approximately 6 days, contributing to an average humidity level of 69%.

September Temperature in Richardton

In September in Richardton, the average temperature is 16°C (60°F). Maximums can reach 36°C (97°F) and minimums can be as low as -2°C (30°F). This diverse temperature range makes Richardton an ideal destination for travelers seeking a mix of comfortable weather and thrilling seasonal experiences.

September Weather in Richardton: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Richardton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richardton, September typically has an average temperature of 16°C (60°F), with highs reaching up to 36°C (97°F) and lows dropping to around -2°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec181431405568736960433123
Data source: Temperature data for Richardton 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.

September Precipitation in Richardton

In Richardton in September, the total precipitation amount is 57 mm (2.3 in), occurring over a span of 6 days.

September Precipitation Trends in Richardton

The chart displays monthly precipitation patterns in Richardton, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Richardton, September typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec111623265749567057461719
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Richardton

In Richardton in September, humidity is 69%. With an average temperature of 16°C (60°F), this humidity feels like a gentle embrace that can make traveling a bit sticky, yet the mild warmth invites exploration, creating a comfortable atmosphere for leisurely strolls and outdoor adventures.

September Average Humidity in Richardton

This chart illustrates the average monthly humidity levels in Richardton, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Richardton is approximately 69%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Richardton

In Richardton in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Richardton.

Maximum UV Index Levels in Richardton for September

The chart shows the monthly maximum UV Index (UVI) for Richardton in September, 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 September, the maximum UV index in Richardton typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245989997532
Data source: Richardton September 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 September Weather in Richardton Compares to Other Months

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

This table compares monthly weather conditions in Richardton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (18°F)11 mm (0.4 inches)84%low
February Weather-10°C (14°F)16 mm (0.6 inches)88%moderate
March Weather-1°C (31°F)23 mm (0.9 inches)78%moderate
April Weather4°C (40°F)26 mm (1.0 inches)75%very high
May Weather13°C (55°F)57 mm (2.2 inches)76%very high
June Weather20°C (68°F)49 mm (1.9 inches)79%very high
July Weather23°C (73°F)56 mm (2.2 inches)78%very high
August Weather21°C (70°F)69 mm (2.7 inches)78%very high
September Weather16°C (60°F)57 mm (2.3 inches)69%high
October Weather6°C (43°F)46 mm (1.8 inches)71%moderate
November Weather-1°C (31°F)17 mm (0.7 inches)82%moderate
December Weather-5°C (23°F)19 mm (0.8 inches)84%low

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