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September Weather in Shenandoah, United States

Last updated: June 24, 2025

The average temperature in Shenandoah, United States during September is 21°C (70°F), with fluctuations ranging from a cool 5°C (42°F) to a warm 35°C (95°F). Expect about 104 mm (4.1 in) of precipitation across 10 days, while the average humidity sits at a comfortable 75%.

September Temperature in Shenandoah

In September in Shenandoah, the average temperature is 21°C (70°F), with maximums reaching 35°C (95°F) and minimums dropping as low as 5°C (42°F). This diverse range in temperatures makes it essential to pack for both warm days and cooler evenings during your travels.

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

The chart illustrates September temperature patterns in Shenandoah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Shenandoah, September typically has an average temperature of 21°C (70°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec262742516476787570544132
Data source: Temperature data for Shenandoah 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 Shenandoah

In Shenandoah in September, the precipitation amount is 104 mm (4.1 in) over a period of 10 days.

September Precipitation Trends in Shenandoah

The chart displays monthly precipitation patterns in Shenandoah, 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 Shenandoah, September typically receives around 104 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec36339372162130931061041523435
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Shenandoah

In Shenandoah in September, humidity is 75%. With an average temperature of 21°C (70°F), this humidity feels like a warm, enveloping blanket that makes exploring the area feel slightly sticky, requiring travelers to stay hydrated and take occasional breaks in the shade to fully enjoy their adventures.

September Average Humidity in Shenandoah

This chart illustrates the average monthly humidity levels in Shenandoah, 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 Shenandoah is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%73%75%78%82%83%81%75%75%82%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Shenandoah

In Shenandoah 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 Shenandoah.

Maximum UV Index Levels in Shenandoah for September

The chart shows the monthly maximum UV Index (UVI) for Shenandoah 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 Shenandoah typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Shenandoah 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 Shenandoah Compares to Other Months

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

This table compares monthly weather conditions in Shenandoah, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)36 mm (1.4 inches)76%moderate
February Weather-3°C (27°F)32 mm (1.3 inches)80%moderate
March Weather6°C (43°F)93 mm (3.6 inches)73%high
April Weather11°C (51°F)72 mm (2.8 inches)74%very high
May Weather18°C (64°F)162 mm (6.4 inches)78%very high
June Weather24°C (76°F)130 mm (5.1 inches)82%extreme
July Weather26°C (78°F)93 mm (3.7 inches)83%very high
August Weather24°C (75°F)106 mm (4.2 inches)80%very high
September Weather21°C (70°F)104 mm (4.1 inches)75%very high
October Weather12°C (54°F)152 mm (6.0 inches)75%high
November Weather5°C (41°F)34 mm (1.4 inches)82%moderate
December Weather0°C (33°F)35 mm (1.4 inches)83%moderate

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