January Weather in Dahlgren, United States

Last updated: June 24, 2025

In January, the average temperature in Dahlgren, United States hovers around 4°C (39°F). Expect temperatures to range from a chilly -14°C (7°F) to a mild 21°C (70°F). This month also brings 62 mm (2.4 in) of precipitation over approximately 8 days, contributing to a high average humidity of 84%. Stay prepared for a mix of weather conditions!

January Temperature in Dahlgren

In January in Dahlgren, the average temperature is 4°C (39°F). Maximum temperatures can reach 21°C (70°F), while minimums can drop as low as -14°C (7°F). It's a time when travelers should be prepared for both chilly days and the occasional warm spell.

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

The chart illustrates January 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, January typically has an average temperature of 4°C (39°F), with highs reaching up to 21°C (70°F) and lows dropping to around -14°C (7°F).

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

January Precipitation in Dahlgren

In Dahlgren in January, the precipitation amount is 62 mm (2.4 in) over the course of 8 days.

January Precipitation Trends in Dahlgren

The chart displays monthly precipitation patterns in Dahlgren, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Dahlgren, January typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 8 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Dahlgren

In Dahlgren in January, humidity is 84%. With an average temperature of 4°C (39°F), this humidity feels like a damp chill that seeps into your bones, making outdoor excursions uncomfortable and demanding more layers than you anticipate while traveling.

January Average Humidity in Dahlgren

This chart illustrates the average monthly humidity levels in Dahlgren, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Dahlgren is approximately 84%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Dahlgren

In Dahlgren in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Dahlgren, you can check the information here.

Maximum UV Index Levels in Dahlgren for January

The chart shows the monthly maximum UV Index (UVI) for Dahlgren in January, 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 January, the maximum UV index in Dahlgren typically reaches 3, which falls under the moderate exposure category.

Data source: Dahlgren January 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 January 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 January’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 January’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