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September Weather in Roanoke, United States

Last updated: June 24, 2025

In Roanoke, United States, the average temperature in September hovers around 24°C (76°F), with a minimum of 11°C (53°F) and a scorching maximum of 36°C (97°F). Expect 102 mm (4.0 in) of precipitation spread over 9 days, contributing to an average humidity level of 73%. Enjoy the diverse climate as you explore this vibrant location!

September Temperature in Roanoke

In September in Roanoke, the average temperature is 24°C (76°F). The maximum can reach 36°C (97°F), while the minimum can drop to as low as 11°C (53°F). This makes it an ideal time for travelers seeking warm weather during the day and cooler evenings for a comfortable experience.

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

The chart illustrates September temperature patterns in Roanoke, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roanoke, 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 11°C (53°F).
JanFebMarAprMayJunJulAugSepOctNovDec465257637177807976675349
Data source: Temperature data for Roanoke 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 Roanoke

In Roanoke in September, the total precipitation amount is 102 mm (4.0 in) over a span of 9 days.

September Precipitation Trends in Roanoke

The chart displays monthly precipitation patterns in Roanoke, 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 Roanoke, September typically receives around 102 mm (4.0 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec10814611413010111810513110211784145
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Roanoke

In Roanoke in September humidity is 73%. With an average temperature of 24°C (76°F), this humidity feels like a warm and sticky embrace, making travel slightly uncomfortable as the air thickens around you, prompting you to seek shade and stay hydrated.

September Average Humidity in Roanoke

This chart illustrates the average monthly humidity levels in Roanoke, 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 Roanoke is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%84%82%82%81%77%77%72%73%73%85%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Roanoke

In Roanoke 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 Roanoke.

Maximum UV Index Levels in Roanoke for September

The chart shows the monthly maximum UV Index (UVI) for Roanoke 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 Roanoke typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111119864
Data source: Roanoke 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 Roanoke Compares to Other Months

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

This table compares monthly weather conditions in Roanoke, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather8°C (47°F)108 mm (4.3 inches)85%moderate
February Weather11°C (53°F)146 mm (5.7 inches)84%high
March Weather14°C (58°F)114 mm (4.5 inches)82%very high
April Weather17°C (63°F)130 mm (5.1 inches)82%very high
May Weather22°C (72°F)101 mm (4.0 inches)81%extreme
June Weather25°C (77°F)118 mm (4.6 inches)77%extreme
July Weather26°C (80°F)105 mm (4.1 inches)77%extreme
August Weather26°C (79°F)131 mm (5.2 inches)72%extreme
September Weather24°C (76°F)102 mm (4.0 inches)73%very high
October Weather19°C (67°F)117 mm (4.6 inches)73%very high
November Weather12°C (53°F)84 mm (3.3 inches)85%high
December Weather10°C (49°F)145 mm (5.7 inches)88%moderate

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