Average temperatures, rainfall and packing tips for Washington, United States in January
January in Washington is typically cool, with average daytime highs around 7°C and nights near -1°C. It is usually the coldest month of the year in Washington.
January is one of the wetter months in Washington, with around 119 mm of rain - plan around showers.
If your dates are flexible, the most comfortable months in Washington are usually April, May, August, September and October.
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In January, Washington averages a daytime high of about 7°C and a night-time low of around -1°C, based on recent historical data. That makes it the coldest month of the year there.
January is one of the wetter months in Washington, with around 119 mm of rain - plan around showers.
January is a workable time to visit Washington, with cool days - just pack accordingly. If your dates are flexible, the most comfortable months in Washington are usually April, May, August, September and October.