Washington
District of Columbia, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Washington, DC

Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington monument in DC, USA
Stunning reflective view of rows of jacaranda trees in spring in the tidal basin of the Washington monument in DC, USA
The winter brings the coldest temperatures of the year in January with the mercury in the range of 28°F (-2.2°C) to 44°F (6.7°C), accompanied by a moderate amount of snow.
Wear a warm winter coat, gloves, and thermals before stepping outside in the freezing weather, as the days are also chilly.
Travelers who lack snow experience should avoid driving motor vehicles, especially on untreated roads and thin ice. A White Christmas and snowy New Year is a remarkable combination for visitors who rarely get a chance to experience snow.
  • Average high temperature in January: 43.4°F

The warmest month (with the highest average high temperature) is July (88.4°F).
The month with the lowest average high temperature is January (43.4°F).

  • Average low temperature in January: 28.6°F

The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is January (28.6°F).

  • Average humidity in January: 62.1%

The month with the highest relative humidity is September (69.7%).
The month with the lowest relative humidity is April (58%).

  • Average rainfall in January: 2.8"

The wettest month (with the highest rainfall) is May (4").
The driest month (with the lowest rainfall) is February (2.6").

  • Average rainfall days in January: 9.6 days

The month with the highest number of rainy days is May (11.1 days).
The month with the lowest number of rainy days is October (7.7 days).

  • Average snowfall in January: 5.6"

The month with the highest snowfall is February (5.7").
Months with the lowest snowfall are April, May, June, July, August, September and October (0").

  • Average snowfall days in January: 3 days

The month with the highest number of snowfall days is January (3 days).
Months with the lowest number of snowfall days are May, June, July, August, September and October (0 days).

  • Average daylight in January: 9.8h

The month with the longest days is June (Average daylight: 14.9h).
The month with shortest days is December (Average daylight: 9.5h).

  • Average sunshine in January: 4.7h

The month with most sunshine is June (Average sunshine: 9.4h).
The month with least sunshine is December (Average sunshine: 4.3h).

  • Average UV index in January: 2

Months with the highest UV index are June and July (UV index 9).
Months with the lowest UV index are January and December (UV index 2).

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