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September Weather in Fredonia, United States

Last updated: June 24, 2025

In Fredonia, United States during September, the average temperature hovers around 19°C (66°F), providing a pleasant climate for outdoor activities. Be prepared for a minimum temperature of 8°C (47°F) and a maximum that can reach up to 28°C (82°F). Expect some moisture as precipitation averages 86 mm (3.4 in) spread over about 11 days, contributing to an average humidity of 76%. Enjoy the balanced warmth and occasional rain that makes this time of year unique!

September Temperature in Fredonia

In September in Fredonia, the average temperature is 19°C (66°F). Maximums can reach 28°C (82°F) and minimums can be as low as 8°C (47°F). This mild climate makes Fredonia an ideal destination for outdoor activities and exploration during this time of year.

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

The chart illustrates September temperature patterns in Fredonia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Fredonia, September typically has an average temperature of 19°C (66°F), with highs reaching up to 28°C (82°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec282934425364717165554135
Data source: Temperature data for Fredonia 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 Fredonia

In Fredonia in September, the precipitation amount is 86 mm (3.4 in), spread over 11 days.

September Precipitation Trends in Fredonia

The chart displays monthly precipitation patterns in Fredonia, 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 Fredonia, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec1061081011251171131359186169141139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Fredonia

In Fredonia in September, humidity is 76%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making travel mildly uncomfortable and encouraging frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Fredonia

This chart illustrates the average monthly humidity levels in Fredonia, 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 Fredonia is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%91%88%88%82%80%77%72%76%83%88%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Fredonia

In Fredonia 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 Fredonia.

Maximum UV Index Levels in Fredonia for September

The chart shows the monthly maximum UV Index (UVI) for Fredonia 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 Fredonia typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35689101098642
Data source: Fredonia 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 Fredonia Compares to Other Months

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

This table compares monthly weather conditions in Fredonia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)106 mm (4.2 inches)91%moderate
February Weather-1°C (30°F)108 mm (4.3 inches)91%moderate
March Weather1°C (34°F)101 mm (4.0 inches)88%high
April Weather5°C (42°F)125 mm (4.9 inches)88%very high
May Weather12°C (53°F)117 mm (4.6 inches)82%very high
June Weather18°C (64°F)113 mm (4.4 inches)79%very high
July Weather22°C (71°F)135 mm (5.3 inches)77%very high
August Weather21°C (71°F)91 mm (3.6 inches)72%very high
September Weather19°C (66°F)86 mm (3.4 inches)76%very high
October Weather13°C (56°F)169 mm (6.7 inches)83%high
November Weather5°C (42°F)141 mm (5.5 inches)88%moderate
December Weather1°C (35°F)139 mm (5.5 inches)87%low

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