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September Weather in Stewartsville, United States

Last updated: June 24, 2025

In September, the average temperature in Stewartsville, United States hovers around 22°C (71°F), providing a comfortable climate for outdoor activities. Expect variations with a minimum of 6°C (44°F) and a maximum reaching up to 34°C (94°F). However, be prepared for some rain, as the area sees 86 mm (3.4 in) of precipitation spread over approximately 8 days. With an average humidity of 72%, it’s wise to stay hydrated and enjoy the vibrant atmosphere!

September Temperature in Stewartsville

In September in Stewartsville, the average temperature is 22°C (71°F). The maximum can reach 34°C (94°F) and the minimum can be as low as 6°C (44°F). This makes it a great time for travelers to experience a pleasant mix of warm days and cooler evenings, ideal for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Stewartsville, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stewartsville, September typically has an average temperature of 22°C (71°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec293045536576797671554236
Data source: Temperature data for Stewartsville 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 Stewartsville

In Stewartsville in September, the precipitation amount reaches 86 mm (3.4 in) over the course of 8 days.

September Precipitation Trends in Stewartsville

The chart displays monthly precipitation patterns in Stewartsville, 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 Stewartsville, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec49369282184131101102871334937
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Stewartsville

In Stewartsville in September humidity is 72%. With an average temperature of 22°C (71°F), this humidity feels like a warm embrace, making outdoor activities enjoyable but potentially sticky, urging travelers to stay hydrated and take breaks in the shade.

September Average Humidity in Stewartsville

This chart illustrates the average monthly humidity levels in Stewartsville, 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 Stewartsville is approximately 72%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%78%75%77%82%83%81%78%72%72%84%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Stewartsville

In Stewartsville 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 Stewartsville.

Maximum UV Index Levels in Stewartsville for September

The chart shows the monthly maximum UV Index (UVI) for Stewartsville 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 Stewartsville typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109643
Data source: Stewartsville 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 Stewartsville Compares to Other Months

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

This table compares monthly weather conditions in Stewartsville, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)49 mm (1.9 inches)80%moderate
February Weather-1°C (31°F)36 mm (1.4 inches)78%moderate
March Weather7°C (45°F)92 mm (3.6 inches)75%high
April Weather12°C (53°F)82 mm (3.2 inches)77%very high
May Weather18°C (65°F)184 mm (7.3 inches)82%very high
June Weather25°C (77°F)131 mm (5.1 inches)83%extreme
July Weather26°C (79°F)101 mm (4.0 inches)81%extreme
August Weather24°C (76°F)102 mm (4.0 inches)78%very high
September Weather22°C (71°F)86 mm (3.4 inches)72%very high
October Weather13°C (56°F)133 mm (5.3 inches)72%high
November Weather6°C (43°F)49 mm (1.9 inches)84%moderate
December Weather2°C (36°F)37 mm (1.4 inches)86%moderate

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