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September Weather in Blacksburg, United States

Last updated: June 24, 2025

In September, the average temperature in Blacksburg, United States is a pleasant 24°C (75°F), with a minimum of 9°C (49°F) and a maximum reaching 35°C (96°F). Expect some rainfall, with approximately 133 mm (5.2 in) of precipitation spread over 9 days. The air tends to be quite humid, with an average humidity of 75%, offering a warm and somewhat tropical feel throughout the month.

September Temperature in Blacksburg

In September in Blacksburg, the average temperature is 24°C (75°F), with maximums reaching up to 35°C (96°F) and minimums dipping as low as 9°C (49°F). This variability makes it an ideal destination for travelers seeking a warm climate with the option for cooler evenings.

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

The chart illustrates September temperature patterns in Blacksburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Blacksburg, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec455055627177817975665247
Data source: Temperature data for Blacksburg 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 Blacksburg

In Blacksburg in September, the precipitation amount is 133 mm (5.2 in) spread over a duration of 9 days.

September Precipitation Trends in Blacksburg

The chart displays monthly precipitation patterns in Blacksburg, 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 Blacksburg, September typically receives around 133 mm (5.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec9412094114116869712313310295125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Blacksburg

In Blacksburg in September humidity is 75%. With average temperature 24°C (75°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel especially stifling and leaving you yearning for cool breezes and refreshingly cold drinks.

September Average Humidity in Blacksburg

This chart illustrates the average monthly humidity levels in Blacksburg, 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 Blacksburg is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%84%82%83%82%80%74%75%79%87%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Blacksburg

In Blacksburg 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 Blacksburg.

Maximum UV Index Levels in Blacksburg for September

The chart shows the monthly maximum UV Index (UVI) for Blacksburg 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 Blacksburg typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46810101110109853
Data source: Blacksburg 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 Blacksburg Compares to Other Months

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

This table compares monthly weather conditions in Blacksburg, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)93 mm (3.7 inches)86%moderate
February Weather10°C (50°F)119 mm (4.7 inches)85%high
March Weather13°C (55°F)94 mm (3.7 inches)84%very high
April Weather17°C (63°F)114 mm (4.5 inches)82%very high
May Weather22°C (71°F)116 mm (4.6 inches)83%very high
June Weather25°C (77°F)86 mm (3.4 inches)82%extreme
July Weather27°C (81°F)96 mm (3.8 inches)80%very high
August Weather26°C (79°F)123 mm (4.8 inches)74%very high
September Weather24°C (75°F)133 mm (5.2 inches)75%very high
October Weather19°C (66°F)102 mm (4.0 inches)79%very high
November Weather11°C (52°F)95 mm (3.8 inches)87%moderate
December Weather9°C (48°F)125 mm (4.9 inches)87%moderate

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