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September Weather in Warrenton, United States

Last updated: June 24, 2025

In September, the average temperature in Warrenton, United States is a pleasant 22°C (72°F). Visitors can expect a minimum chill of 8°C (46°F) and the possibility of warm highs reaching 35°C (95°F). Rainfall averages 56 mm (2.2 in) across 6 days, while the humidity remains relatively high at 76%, creating a distinctive climate that blends warmth with refreshing breezes.

September Temperature in Warrenton

In September in Warrenton, the average temperature is 22°C (72°F). Maximums can reach 35°C (95°F), and minimums can be as low as 8°C (46°F). This range makes it an ideal time for travelers to enjoy a mix of warm days and cooler evenings, perfect for exploring the area comfortably.

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

The chart illustrates September temperature patterns in Warrenton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Warrenton, September typically has an average temperature of 22°C (72°F), with highs reaching up to 35°C (95°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec323546546676797672584439
Data source: Temperature data for Warrenton 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 Warrenton

In Warrenton in September, the precipitation amount is 56 mm (2.2 in) spread over 6 days.

September Precipitation Trends in Warrenton

The chart displays monthly precipitation patterns in Warrenton, 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 Warrenton, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec71731251221569099139561006649
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Warrenton

In Warrenton in September humidity is 76%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, making travel slightly uncomfortable as you navigate through the thick, saturated air.

September Average Humidity in Warrenton

This chart illustrates the average monthly humidity levels in Warrenton, 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 Warrenton is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%80%82%83%81%80%76%76%85%86%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Warrenton

In Warrenton 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 Warrenton.

Maximum UV Index Levels in Warrenton for September

The chart shows the monthly maximum UV Index (UVI) for Warrenton 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 Warrenton typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3569101111109753
Data source: Warrenton 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 Warrenton Compares to Other Months

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

This table compares monthly weather conditions in Warrenton, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)71 mm (2.8 inches)82%moderate
February Weather2°C (35°F)73 mm (2.9 inches)80%moderate
March Weather8°C (47°F)125 mm (4.9 inches)80%high
April Weather12°C (55°F)122 mm (4.8 inches)80%very high
May Weather19°C (66°F)156 mm (6.1 inches)82%very high
June Weather24°C (76°F)90 mm (3.5 inches)83%extreme
July Weather26°C (79°F)99 mm (3.9 inches)81%extreme
August Weather24°C (76°F)139 mm (5.5 inches)80%very high
September Weather22°C (72°F)56 mm (2.2 inches)76%very high
October Weather15°C (58°F)100 mm (3.9 inches)76%high
November Weather7°C (44°F)66 mm (2.6 inches)85%moderate
December Weather4°C (39°F)49 mm (1.9 inches)86%moderate

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