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September Weather in Greenbrier, United States

Last updated: June 24, 2025

In September, the average temperature in Greenbrier, United States hovers around 24°C (76°F). However, be prepared for temperature fluctuations, with minimums dipping to 8°C (47°F) and maximums soaring up to 36°C (97°F). Expect some moisture in the air, as precipitation totals 76 mm (3.0 in) over approximately 6 days, accompanied by an average humidity of 59%.

September Temperature in Greenbrier

In September in Greenbrier, the average temperature is 24°C (76°F), with maximums reaching 36°C (97°F) and minimums dropping to as low as 8°C (47°F). This makes it an ideal time for travelers seeking a warm yet comfortable climate.

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

The chart illustrates September temperature patterns in Greenbrier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Greenbrier, September typically has an average temperature of 24°C (76°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec404454607078817975635046
Data source: Temperature data for Greenbrier 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 Greenbrier

In Greenbrier in September, the total precipitation amount reaches 76 mm (3.0 in) over the course of 6 days.

September Precipitation Trends in Greenbrier

The chart displays monthly precipitation patterns in Greenbrier, 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 Greenbrier, September typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec9115215115718612286120769786109
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Greenbrier

In Greenbrier in September humidity is 59%. With an average temperature of 24°C (76°F), this humidity feels like a comfortable, refreshing embrace, making it ideal for leisurely strolls and outdoor explorations.

September Average Humidity in Greenbrier

This chart illustrates the average monthly humidity levels in Greenbrier, 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 Greenbrier is approximately 59%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%79%77%78%82%81%75%61%59%69%82%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Greenbrier

In Greenbrier in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Greenbrier.

Maximum UV Index Levels in Greenbrier for September

The chart shows the monthly maximum UV Index (UVI) for Greenbrier 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 Greenbrier typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810111111109754
Data source: Greenbrier 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 Greenbrier Compares to Other Months

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

This table compares monthly weather conditions in Greenbrier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)91 mm (3.6 inches)82%moderate
February Weather7°C (44°F)152 mm (6.0 inches)79%high
March Weather12°C (54°F)151 mm (5.9 inches)77%very high
April Weather15°C (60°F)157 mm (6.2 inches)78%very high
May Weather21°C (70°F)186 mm (7.3 inches)82%extreme
June Weather25°C (78°F)122 mm (4.8 inches)81%extreme
July Weather27°C (82°F)86 mm (3.4 inches)75%extreme
August Weather26°C (80°F)120 mm (4.7 inches)61%very high
September Weather24°C (76°F)76 mm (3.0 inches)59%very high
October Weather17°C (63°F)97 mm (3.8 inches)69%high
November Weather10°C (50°F)86 mm (3.4 inches)82%moderate
December Weather8°C (46°F)109 mm (4.3 inches)87%moderate

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