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Early winter · Weather & things to do

Washington, DC in December

Washington, DC cools off: highs slip to 45°F (7°C), from 55°F in November, with lows of 30°F (-1°C) and about 3.7 in (95 mm) of rain.

With a comfort score of 50/100 (11th of 12), it's one of the toughest months, held back mainly by cool days.

Washington, DC, District of Columbia, United States
Avg high
45°F (7°C)
Avg low
30°F (-1°C)
Rain
3.7 in (95 mm)
Humidity
83%
Cloud cover
61%
Daylight
~9 h 17 min
Comfort score
50/100 · Fair

What December feels like

It's cool, with highs near 45°F (7°C), so a proper jacket stays on most of the day.

Average lows of 30°F (-1°C) mean frosty nights and icy mornings.

Some rain is likely, about 3.7 in (95 mm) in the month, so pack for a shower or two.

Only about 9 h 17 min of daylight means early sunsets.

Washington, DC: December compared with the months either side
NovemberDecemberJanuary
Avg high55°F13°C45°F7°C40°F4°C
Avg low38°F3°C30°F-1°C26°F-4°C
Rain/snow3.1 in80 mm3.7 in95 mm2.6 in67 mm
Daylight9 h 50 min9 h 17 min9 h 34 min
Comfort735046

Plan around December

December is one of the lower-scoring months here; the best are April & May and September & October.

What to pack for December

What to do in Washington, DC in December

A mixed month: these picks balance outdoor stops with indoor fallbacks.

Nearby in December

These averages also cover Georgetown and National Mall & Downtown.

NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.

Washington, DC in December: quick answers

Is December a good time to visit Washington, DC?

It's one of the tougher months here, scoring 50/100, held back mainly by cool days. The best months are April & May and September & October. Expect highs of 45°F (7°C) and 3.7 in (95 mm) of rain. Our Capital Cities Corridor route recommends Mar – Jun, so December is outside its suggested window.

How cold is Washington, DC in December?

Average highs are 45°F (7°C) and average lows 30°F (-1°C), making it the 3rd-coldest month by daytime highs, with nights below freezing on average.

Does it rain a lot in Washington, DC in December?

Some: about 3.7 in (95 mm) of rain falls across December on average, the 6th-driest month of the year. The annual total is about 45.4 in (1152 mm).

What should I pack for Washington, DC in December?

Bring insulated jacket (highs only 45°F), hat, gloves and thermal base layers (lows around 30°F), shoes with grip (frost and ice are possible), packable rain jacket or umbrella (a shower or two is likely) and comfortable walking shoes (most places below are best reached on foot or with short walks).

Planning Washington, DC in December?

Plan it together in TripsCircle: one itinerary, one shared packing list and costs split as you go.

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