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United StatesThe weather in January in Washington
It's cold in January in Washington with an average temperature of 4°C. Temperatures this month range from a low of 0°C to a high of 9°C. At night, you can expect temperatures between -9°C and -2°C.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in January for Washington, New Jersey. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 20°C in 2020, Washington reached the highest temperature in January over the past 10 years. The lowest daytime temperature in this month was -12°C in 2014. The extreme nighttime temperatures ranged from a lowest recorded value of -22°C to a highest value of 9°C.
Precipitation and snowfall
In January, there is an average of 93 mm of precipitation, spread over 13 days. Of the total precipitation, about 16 cm falls as snow in January. The wind speed is around 3 Bft, mostly coming from the Southwest.
Daily weather in January for Washington
Click on any day in January to get detailed info about the usual weather on that day in Washington. Check out the historical temperatures and precipitation over the past 10 years on this day.
January weather comparison
| Washington | New York | |
|---|---|---|
| Average temperature | 4°C | 5°C |
| Max. temperature | 9°C | 11°C |
| Min. temperature | -9°C | -5°C |
| Total precipitation | 93 mm | 97 mm |
| Rainy days | 13 days | 12 days |
| Total snowfall | 16 cm | 16 cm |
| Snowy days | 8 days | 8 days |
Start of January
The month of January starts in Washington with really cold temps, averaging around 4°C during the day and nights dipping to about -4°C.
Mid January
By mid-January, daytime temps rise to around 5°C, with nights around -4°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of January
By the end of January, the average daytime temperature in Washington is around 4°C, while nighttime temps are about -5°C. A shower might pop up, but overall, the weather will be dry and sunny.
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UV index
The UV index is a maximum of 5 this month. That's a moderate value on the intensity scale of 1 to 11. Unprotected skin can burn in about 30 minutes.
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Temperature charts
These charts show the average temperatures in January in Washington, New Jersey. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in January in Washington
Temperature in January in Washington over the years
Precipitation charts
These charts show the average amount of precipitation in January in Washington, New Jersey. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in January in Washington
Total precipitation in January in Washington over the years
Daily Snowfall in January in Washington
Snowfall in January in Washington per year
Daily UV index in January in Washington
This chart shows the average daily UV index in January in Washington, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Weather experiences in January in Washington
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Average weather in Washington by month
Click on a month below to see detailed weather info for Washington. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.