National Harbor Weather in January

National Harbor in January averages 7°C (45°F) during the day and -2°C (28°F) at night. This is part of the winter season, and quite a bit of snow/rainfall is expected this month.

Rainfall in National Harbor in January

Historically, January sees about 10 days of snow/rain, with a monthly average of 68 mm (2.7 in). Expect a fairly normal spread of rainfall this month, with no particular pattern of very heavy or very persistent showers.

Temperature in National Harbor in January

Daytime highs in National Harbor in January reach 7°C (45°F), with nights around -2°C (28°F). January is part of the winter season. The days stay cool from start to finish. Layering up well will make outdoor time much more comfortable. Nights drop below freezing to -2°C (28°F). An extra blanket is worth packing if you're unsure about the heating where you're staying. It's generally the coldest month of the year, making it essential to pack warm layers and winter accessories.

Sunshine in National Harbor in January

The month experiences a moderate amount of sunlight, with 144 hours of sunshine. This provides a nice balance between sunshine and clouds.

Wind Speed in National Harbor in January

Average wind conditions reach 5 m/s (10 knots) in January. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

January in National Harbor has its charm. However, if you're seeking pleasant, dry and sunny weather, our weather planner can help you explore other destinations in the world.