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September Weather in Grove City, United States

Last updated: June 24, 2025

In September, the average temperature in Grove City, United States is a warm 28°C (82°F), with minimums dipping to 22°C (72°F) and maximums soaring to 34°C (94°F). Prepare for some rain, as precipitation typically reaches 160 mm (6.3 in) over 19 days, while the atmosphere stays quite humid with an average humidity of 83%. Enjoy the tropical vibes!

September Temperature in Grove City

In September, in Grove City, the average temperature is a warm 28°C (82°F), with maximums reaching up to 34°C (94°F) and minimums dropping to around 22°C (72°F). This makes it an ideal destination for travelers seeking sunny and pleasant weather.

September Weather in Grove City: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Grove City, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grove City, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec646870757981828282807267
Data source: Temperature data for Grove City 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 Grove City

In Grove City in September, the precipitation amount is 160 mm (6.3 in), occurring over a period of 19 days.

September Precipitation Trends in Grove City

The chart displays monthly precipitation patterns in Grove City, 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 Grove City, September typically receives around 160 mm (6.3 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec35392247124177206205160734157
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grove City

In Grove City in September humidity is 83%. With an average temperature of 28°C (82°F), this humidity feels like stepping into a warm, thick blanket, making travel languid and drenched in sweat.

September Average Humidity in Grove City

This chart illustrates the average monthly humidity levels in Grove City, 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 Grove City is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%80%75%68%65%73%77%80%83%83%83%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grove City

In Grove City in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Grove City.

Maximum UV Index Levels in Grove City for September

The chart shows the monthly maximum UV Index (UVI) for Grove City 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 Grove City typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec6810111212121111975
Data source: Grove City 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 Grove City Compares to Other Months

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

This table compares monthly weather conditions in Grove City, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)35 mm (1.4 inches)83%high
February Weather20°C (69°F)39 mm (1.5 inches)80%very high
March Weather21°C (70°F)22 mm (0.9 inches)75%very high
April Weather24°C (75°F)47 mm (1.9 inches)68%extreme
May Weather26°C (79°F)124 mm (4.9 inches)65%extreme
June Weather27°C (82°F)177 mm (7.0 inches)73%extreme
July Weather28°C (82°F)206 mm (8.1 inches)77%extreme
August Weather28°C (83°F)205 mm (8.1 inches)80%extreme
September Weather28°C (82°F)160 mm (6.3 inches)83%extreme
October Weather26°C (80°F)72 mm (2.9 inches)83%very high
November Weather22°C (72°F)41 mm (1.6 inches)83%high
December Weather20°C (68°F)57 mm (2.3 inches)84%moderate

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