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September Weather in Richfield, United States

Last updated: June 24, 2025

In September, the average temperature in Richfield, United States reaches a mild 20°C (67°F), making it a pleasant time to visit. However, be prepared for fluctuations; temperatures can dip to a minimum of 5°C (42°F) and soar to a maximum of 33°C (92°F). Visitors should also anticipate 91 mm (3.6 in) of precipitation spread across about 11 days, coupled with an average humidity of 77%. Stay comfortable and ready for a range of weather conditions!

September Temperature in Richfield

In September in Richfield, the average temperature is 20°C (67°F). Maximums can reach 33°C (92°F) and minimums can drop as low as 5°C (42°F). This varied climate makes Richfield an ideal destination for travelers seeking both warmth and cooler moments throughout their visit.

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

The chart illustrates September temperature patterns in Richfield, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Richfield, September typically has an average temperature of 20°C (67°F), with highs reaching up to 33°C (92°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec293239496170747267564135
Data source: Temperature data for Richfield 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 Richfield

In Richfield in September, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

September Precipitation Trends in Richfield

The chart displays monthly precipitation patterns in Richfield, 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 Richfield, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec839498125126153144111911109492
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Richfield

In Richfield in September, humidity is 77%. With an average temperature of 20°C (67°F), this humidity feels like a thick, warm blanket wrapping around you, making travel uncomfortable and sticky, and often leading to a quick need for shade or refreshing drinks.

September Average Humidity in Richfield

This chart illustrates the average monthly humidity levels in Richfield, 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 Richfield is approximately 77%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%87%81%83%82%76%77%82%89%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Richfield

In Richfield in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Richfield.

Maximum UV Index Levels in Richfield for September

The chart shows the monthly maximum UV Index (UVI) for Richfield 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 Richfield typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910101098642
Data source: Richfield 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 Richfield Compares to Other Months

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

This table compares monthly weather conditions in Richfield, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)83 mm (3.3 inches)88%moderate
February Weather0°C (32°F)94 mm (3.7 inches)88%moderate
March Weather4°C (40°F)98 mm (3.9 inches)87%high
April Weather10°C (50°F)125 mm (4.9 inches)87%very high
May Weather16°C (62°F)126 mm (5.0 inches)81%very high
June Weather21°C (70°F)153 mm (6.0 inches)83%very high
July Weather24°C (75°F)144 mm (5.7 inches)82%very high
August Weather22°C (72°F)111 mm (4.4 inches)76%very high
September Weather20°C (67°F)91 mm (3.6 inches)77%very high
October Weather14°C (57°F)110 mm (4.3 inches)82%high
November Weather5°C (42°F)94 mm (3.7 inches)89%moderate
December Weather2°C (35°F)92 mm (3.6 inches)86%low

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