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September Weather in Sandston, United States

Last updated: June 24, 2025

In Sandston, United States, the average temperature in September is a pleasant 23°C (74°F). Expect a range that can drop to a cool 8°C (47°F) at night and rise to a sweltering 37°C (98°F) during the day. Be prepared for 103 mm (4.1 in) of precipitation spread over 10 days, with an average humidity level of 78%. 🌦️

September Temperature in Sandston

In September in Sandston, the average temperature is 23°C (74°F), with maximums reaching 37°C (98°F) and minimums dropping to as low as 8°C (47°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while being prepared for both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Sandston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sandston, September typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (98°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec404550606876817873645044
Data source: Temperature data for Sandston 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 Sandston

In Sandston in September, the precipitation amount is 103 mm (4.1 in) over a span of 10 days.

September Precipitation Trends in Sandston

The chart displays monthly precipitation patterns in Sandston, 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 Sandston, September typically receives around 103 mm (4.1 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec7299771061031241181681031277591
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sandston

In Sandston in September humidity is 78%. With an average temperature of 23°C (74°F), this humidity feels like a warm, enveloping embrace, making travel somewhat stifling and prompting frequent breaks to hydrate and seek shade.

September Average Humidity in Sandston

This chart illustrates the average monthly humidity levels in Sandston, 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 Sandston is approximately 78%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%82%81%80%82%81%81%78%80%84%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sandston

In Sandston 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 Sandston.

Maximum UV Index Levels in Sandston for September

The chart shows the monthly maximum UV Index (UVI) for Sandston 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 Sandston typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3679101010108753
Data source: Sandston 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 Sandston Compares to Other Months

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

This table compares monthly weather conditions in Sandston, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)72 mm (2.8 inches)84%moderate
February Weather7°C (45°F)99 mm (3.9 inches)83%high
March Weather10°C (50°F)77 mm (3.0 inches)82%high
April Weather15°C (60°F)106 mm (4.2 inches)81%very high
May Weather20°C (69°F)103 mm (4.0 inches)80%very high
June Weather24°C (76°F)124 mm (4.9 inches)82%very high
July Weather27°C (81°F)118 mm (4.6 inches)81%very high
August Weather26°C (78°F)168 mm (6.6 inches)81%very high
September Weather23°C (74°F)103 mm (4.1 inches)78%very high
October Weather18°C (64°F)127 mm (5.0 inches)80%high
November Weather10°C (50°F)75 mm (3.0 inches)84%moderate
December Weather7°C (44°F)91 mm (3.6 inches)84%moderate

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