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September Weather in Waldorf, United States

Last updated: June 24, 2025

In September, the average temperature in Waldorf, United States hovers around 23°C (73°F), creating a comfortable climate. However, temperatures can vary significantly, with minimums dipping to 10°C (50°F) and maximums soaring to 36°C (97°F). Expect some rain, as precipitation reaches 91 mm (3.6 in) over approximately 11 days, contributing to an average humidity level of 75%.

September Temperature in Waldorf

In September in Waldorf, the average temperature is 23°C (73°F). Maximums can reach 36°C (97°F), while minimums can drop to as low as 10°C (50°F). This diverse temperature range makes it an ideal time for travelers to enjoy both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Waldorf, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Waldorf, September typically has an average temperature of 23°C (73°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec384248586776817873634943
Data source: Temperature data for Waldorf 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 Waldorf

In Waldorf in September, the precipitation amount is 91 mm (3.6 in) over a period of 11 days.

September Precipitation Trends in Waldorf

The chart displays monthly precipitation patterns in Waldorf, 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 Waldorf, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec62937799118106122151911087886
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Waldorf

In Waldorf in September, humidity is 75%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel slightly uncomfortable yet invigorating as the air wraps around you, creating a sense of walking through a lush, tropical paradise.

September Average Humidity in Waldorf

This chart illustrates the average monthly humidity levels in Waldorf, 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 Waldorf is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%83%83%81%78%79%74%72%75%81%85%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Waldorf

In Waldorf 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 Waldorf.

Maximum UV Index Levels in Waldorf for September

The chart shows the monthly maximum UV Index (UVI) for Waldorf 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 Waldorf typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec357910101098753
Data source: Waldorf 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 Waldorf Compares to Other Months

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

This table compares monthly weather conditions in Waldorf, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)62 mm (2.4 inches)84%moderate
February Weather6°C (42°F)93 mm (3.7 inches)83%moderate
March Weather9°C (48°F)77 mm (3.0 inches)83%high
April Weather14°C (58°F)99 mm (3.9 inches)81%very high
May Weather19°C (67°F)118 mm (4.6 inches)78%very high
June Weather24°C (76°F)106 mm (4.2 inches)79%very high
July Weather27°C (81°F)122 mm (4.8 inches)74%very high
August Weather26°C (79°F)151 mm (5.9 inches)72%very high
September Weather23°C (73°F)91 mm (3.6 inches)75%very high
October Weather17°C (64°F)108 mm (4.2 inches)81%high
November Weather9°C (49°F)78 mm (3.1 inches)85%moderate
December Weather6°C (43°F)86 mm (3.4 inches)84%moderate

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