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Dahlgren (VA) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dahlgren.
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Climate overview of Dahlgren
The climate in Dahlgren, Virginia, United States of America, is marked by large temperature swings across the seasons, ranging from 31°C (88°F) in July to 7°C (45°F) in January.
The city has a wet climate, receiving around 1167 mm (46 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. June is the wettest month. Sunshine peaks in June, when the city sees around 9.4 hours of sunshine per day.
Dahlgren Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dahlgren - and find the best time to visit.
Monthly Temperature in Dahlgren
In Dahlgren, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 7°C (45°F) in January.
Nighttime temperatures range from 21°C (70°F) in July to -3°C (27°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Dahlgren
Dahlgren experiences significant rain/snowfall throughout the year, averaging 1167 mm (46 in) of precipitation annually. The seasons in Dahlgren bring significant changes in precipitation. The wettest month, June, receives high rainfall, with an average of 142 mm (5.6 in) of precipitation. This rainfall is distributed across 13 rainy days.
In contrast, the driest month, February, experiences much less rainfall, totaling 65 mm (2.6 in) over 10 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Dahlgren Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Dahlgren
In Dahlgren, summer days are longer and more sunny, with daily sunshine hours peaking at 9.4 hours in June. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 4.3 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Washington DC, the United States of America (57 KM, 35 Miles).
Daily hours of sunshine
Data from: Washington DC, the United States of America (57 KM, 35 Miles).
Daily percentage of sunshine
Data from: Washington DC, the United States of America (57 KM, 35 Miles).
Humidity in Dahlgren by Month
The relative humidity is high throughout the year in Dahlgren.
The city experiences its highest humidity in August, reaching 69%. In March, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Washington DC, the United States of America (57 KM, 35 Miles).
Best Time to Visit Dahlgren
For comfortable weather, consider visiting Dahlgren in April. Conditions are usually least favourable in January, February and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
cold
Feb
cold
Mar
good
Apr
excellent
May
very good
Jun
very good
Jul
good
Aug
good
Sep
very good
Oct
very good
Nov
good
Dec
wet
- Best overall: April
- Warmest weather: July and August
- Most sunshine: June and July
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -3°C (27°F).
Frequently asked questions about the climate in Dahlgren
What is the best time to visit Dahlgren?
April typically offers the most optimal weather in Dahlgren. In contrast, January, February and December tend to have less optimal conditions. Dahlgren has very warm summers and cold winters.
What temperatures can I expect in Dahlgren?
Daytime highs range from 7°C (45°F) in January to 31°C (88°F) in July. Nighttime lows range from -3°C (27°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Dahlgren get?
Annual rainfall is around 1167 mm (46 in). June is the wettest month with 142 mm (5.6 in), while February is the driest with 65 mm (2.6 in).
How sunny is Dahlgren?
Dahlgren receives around 2,520 hours of sunshine per year. June is the sunniest month with 282 hours, while December is the cloudiest with just 130 hours. Overall, Dahlgren enjoys abundant sunshine.
Dahlgren 3-Day Forecast
Dahlgren on the map
Dahlgren is highlighted - select any city to see its climate.
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