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September Weather in Union Grove, United States

Last updated: June 24, 2025

In September, the average temperature in Union Grove, United States is a pleasant 19°C (66°F). Expect variations, with minimums dropping to 5°C (41°F) and maximums reaching up to 29°C (85°F). The region sees about 89 mm (3.5 in) of precipitation over 10 days, contributing to an average humidity of 79%.

September Temperature in Union Grove

In September in Union Grove, the average temperature is 19°C (66°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as 5°C (41°F). This makes it a versatile month for travelers, offering pleasant weather for various outdoor activities while still allowing for cooler evenings.

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

The chart illustrates September temperature patterns in Union Grove, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Union Grove, September typically has an average temperature of 19°C (66°F), with highs reaching up to 29°C (85°F) and lows dropping to around 5°C (41°F).
JanFebMarAprMayJunJulAugSepOctNovDec252636435465727266533932
Data source: Temperature data for Union Grove 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 Union Grove

In Union Grove in September, the precipitation amount is 89 mm (3.5 in) over a period of 10 days.

September Precipitation Trends in Union Grove

The chart displays monthly precipitation patterns in Union Grove, 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 Union Grove, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec666367113146967768891245555
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Union Grove

In Union Grove in September humidity is 79%. With an average temperature of 19°C (66°F), this humidity feels like a warm embrace, making it feel much warmer than the actual temperature and creating a heavy, sticky atmosphere that can be a bit uncomfortable for traveling.

September Average Humidity in Union Grove

This chart illustrates the average monthly humidity levels in Union Grove, 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 Union Grove is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%85%85%85%78%80%78%76%79%83%88%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Union Grove

In Union Grove 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 Union Grove.

Maximum UV Index Levels in Union Grove for September

The chart shows the monthly maximum UV Index (UVI) for Union Grove 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 Union Grove typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098532
Data source: Union Grove 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 Union Grove Compares to Other Months

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

This table compares monthly weather conditions in Union Grove, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)66 mm (2.6 inches)85%low
February Weather-3°C (27°F)63 mm (2.5 inches)85%moderate
March Weather2°C (36°F)67 mm (2.6 inches)85%high
April Weather6°C (44°F)113 mm (4.4 inches)85%very high
May Weather12°C (54°F)146 mm (5.7 inches)78%very high
June Weather19°C (66°F)96 mm (3.8 inches)80%very high
July Weather22°C (73°F)77 mm (3.0 inches)78%very high
August Weather22°C (72°F)68 mm (2.7 inches)76%very high
September Weather19°C (66°F)89 mm (3.5 inches)79%very high
October Weather12°C (53°F)124 mm (4.9 inches)83%moderate
November Weather4°C (39°F)55 mm (2.2 inches)88%moderate
December Weather0°C (33°F)55 mm (2.1 inches)81%low

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