September Weather in Dahlgren, United States

Last updated: June 24, 2025

In Dahlgren, United States, the average temperature in September hovers around 23°C (74°F), with a minimum dropping to 11°C (52°F) and a maximum soaring to 36°C (97°F). Expect 92 mm (3.6 in) of precipitation spread over 10 days, contributing to an average humidity of 75%. Enjoy a delightful mix of warmth and occasional rain!

September Temperature in Dahlgren

In September in Dahlgren, the average temperature is 23°C (74°F). Maximums can reach 36°C (97°F) and minimums can be as low as 11°C (52°F). This makes it a great time for travelers seeking pleasant weather and a mix of warm and cooler days.

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

The chart illustrates September temperature patterns in Dahlgren, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dahlgren, September typically has an average temperature of 23°C (74°F), with highs reaching up to 36°C (97°F) and lows dropping to around 11°C (52°F).

Data source: Temperature data for Dahlgren generated using information from the Copernicus Climate Change Service.

September Precipitation in Dahlgren

In Dahlgren in September, the total precipitation amount is 92 mm (3.6 in), which falls over the course of 10 days.

September Precipitation Trends in Dahlgren

The chart displays monthly precipitation patterns in Dahlgren, 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 Dahlgren, September typically receives around 92 mm (3.6 inches) of precipitation spread over approximately 10 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Dahlgren

In Dahlgren in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

September Average Humidity in Dahlgren

This chart illustrates the average monthly humidity levels in Dahlgren, 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 Dahlgren is approximately 75%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dahlgren

In Dahlgren 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 Dahlgren.

Maximum UV Index Levels in Dahlgren for September

The chart shows the monthly maximum UV Index (UVI) for Dahlgren 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 Dahlgren typically reaches 8, which falls under the very high exposure category.

Data source: Dahlgren 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 Dahlgren Compares to Other Months

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

This table compares monthly weather conditions in Dahlgren, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	62 mm (2.4 inches)	84%	moderate
February Weather	6°C (43°F)	93 mm (3.6 inches)	83%	moderate
March Weather	9°C (49°F)	75 mm (2.9 inches)	83%	high
April Weather	15°C (59°F)	99 mm (3.9 inches)	81%	very high
May Weather	20°C (68°F)	115 mm (4.5 inches)	78%	very high
June Weather	24°C (76°F)	110 mm (4.3 inches)	79%	very high
July Weather	27°C (81°F)	118 mm (4.6 inches)	74%	very high
August Weather	26°C (79°F)	157 mm (6.2 inches)	72%	very high
September Weather	23°C (74°F)	92 mm (3.6 inches)	75%	very high
October Weather	18°C (64°F)	110 mm (4.3 inches)	81%	high
November Weather	10°C (50°F)	80 mm (3.1 inches)	85%	moderate
December Weather	6°C (43°F)	88 mm (3.5 inches)	84%	moderate