Washington DC Weather Forecast

Washington DC offers the best of the 4 seasons of weather just as Philadelphia, New York, Arlington, Charlotte, Pittsburgh, and Boston do.

Washington’s proximity to the Atlantic Ocean and Chesapeake Bay moderate temperatures and raise humidity. As an expansive urban area, Washington can suffer from pollution and a heat island effect. Prevailing winds and nearness to the Appalachian mountains also influence the weather in DC.

Washington DC is a popular destination with its US governmental attractions and the mild winter and spring, warm summers and cooler but tolerable fall season, and it makes for great weather for tourists.

7 Day Forecast for Washington:

WASHINGTON D.C. WEATHER

Seasonal Weather in Washington DC

Here’s a detailed overview of the average weather conditions in Washington, D.C., for each season, including temperature ranges, humidity, UV reports, precipitation, sunshine days, pollution, storms, winds, and the frequency of days with temperatures over 90 degrees Fahrenheit:

Winter (December to February):

• Temperature Range: Winters in Washington, D.C., are cold but milder than some northern cities. Highs typically range from 47°F (8°C) to 42°F (6°C), while nighttime lows range from 30°F (-1°C) to 24°F (-4°C).
• Humidity: Humidity levels are lower in winter, resulting in drier and colder conditions.
• UV Reports: UV levels are low in winter, but sun protection is still advisable on sunny days.
• Precipitation: Winter is relatively dry in Washington, D.C., with average monthly rainfall ranging from minimal to around 2 inches. Snowfall is infrequent.
• Sunshine Days: Washington, D.C., experiences a mix of sunny and cloudy days in winter.
• Air Quality/Pollution: Air quality is generally good in the winter, with minimal pollution.
• Storms: Significant winter storms with snowfall can occur but are less frequent than in northern cities.
• Winds: Cold winds can make winter conditions feel colder, especially near open areas.
• Days Over 90 Degrees: Days over 90 degrees Fahrenheit are very unlikely.

Spring (March to May):

• Temperature Range: Spring in Washington, D.C., is mild and gradually warms up. Highs typically range from 58°F (14°C) in March to 76°F (24°C) in May, while nighttime lows range from 37°F (3°C) to 54°F (12°C).
• Humidity: Humidity levels are moderate in spring, creating comfortable conditions.
• UV Reports: UV levels are generally low in spring, but sun protection is advisable on sunny days.
• Precipitation: Spring is moderately wet, with average monthly rainfall ranging from 3 to 4 inches.
• Sunshine Days: Washington, D.C., experiences a mix of sunny and overcast days in spring.
• Air Quality/Pollution: Air quality is generally good in spring, but urban pollution can affect air quality at times.
• Storms: Spring can bring occasional rain showers and, at times, thunderstorms, but severe storms are infrequent.
• Winds: Breezy conditions may occur.
• Days Over 90 Degrees: Days over 90 degrees Fahrenheit are rare in spring, with mild and comfortable temperatures.

Summer (June to August):

• Temperature Range: Summers in Washington, D.C., are hot and humid. Highs typically range from 85°F (29°C) to 88°F (31°C), with nighttime lows between 64°F (18°C) and 68°F (20°C).
• Humidity: Humidity levels are high during the summer, contributing to warm and muggy conditions.
• UV Reports: UV levels are high in summer, requiring sun protection.
• Precipitation: Summer is moderately wet, with average monthly rainfall ranging from 3 to 4 inches. Afternoon thunderstorms are common.
• Sunshine Days: While there are sunny days, summer also brings a higher chance of overcast conditions due to afternoon thunderstorms.
• Air Quality/Pollution: Air quality remains generally good in summer but may be impacted by localized pollution from urban areas.
• Storms: Washington, D.C., experiences frequent afternoon thunderstorms in the summer, often producing heavy rainfall and lightning.
• Winds: Breezy conditions continue, especially in stormy weather.
• Days Over 90 Degrees: Days over 90 degrees Fahrenheit are common in summer in Washington, D.C., making it a warm and occasionally hot season.

Fall (September to November):

• Temperature Range: Fall in Washington, D.C., is comfortable. Highs range from 83°F (28°C) in September to 59°F (15°C) in November, while nighttime lows range from 66°F (19°C) to 39°F (4°C).
• Humidity: Humidity levels decrease in the fall, creating pleasant weather.
• UV Reports: UV levels decrease in the fall, but sun protection is still advisable on sunny days.
• Precipitation: Fall is moderately wet, with average monthly rainfall ranging from 3 to 4 inches.
• Sunshine Days: Fall offers a mix of sunny and overcast days, making it a pleasant time for outdoor activities.
• Air Quality/Pollution: Air quality is generally good in the fall, with minimal pollution.
• Storms: Fall can bring occasional rain showers, but severe storms are rare.
• Winds: Breezy conditions may occur.
• Days Over 90 Degrees: Days over 90 degrees Fahrenheit become rare in fall, with mild and comfortable temperatures.

 

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