January weather forecast
Washington, NH

Share

Weather in January

January, the same as December, in Washington, New Hampshire, is a freezing cold winter month, with an average temperature ranging between max 25.5°F (-3.6°C) and min 13.1°F (-10.5°C).

Temperature

January is the month when Washington sees the lowest average temperatures, with a high of 25.5°F (-3.6°C) and a low of 13.1°F (-10.5°C).

Humidity

January and February, with an average relative humidity of 86%, are the most humid months.

Rainfall

January is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.79" (20mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall in Washington. In Washington, in January, during 11.6 snowfall days, 2.83" (72mm) of snow is typically accumulated. Throughout the year, there are 65.7 snowfall days, and 19.88" (505mm) of snow is accumulated.

Daylight

The average length of the day in January is 9h and 25min.
On the first day of the month, sunrise is at 7:20 am and sunset at 4:23 pm. On the last day of January, sunrise is at 7:04 am and sunset at 4:58 pm EST.

Sunshine

In Washington, the average sunshine in January is 4.3h.

UV index

In Washington, the average daily maximum UV index in January is 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily high UV index of 2 in January translates into this advice:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Aug 18, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What time of the year is the coldest?

With average temperatures fluctuating between a high of 25.5°F (-3.6°C) and a low of 13.1°F (-10.5°C), January stands out as the coldest month.

How cold is it in January?

The high-temperature, in January, in Washington, records 25.5°F (-3.6°C), while the low-temperature is 13.1°F (-10.5°C).

What is the most humid month?

The months with the highest humidity are January and February, with an average relative humidity of 86%.

What is the average humidity in January?

In January, the average relative humidity is 86%.

What is the driest month?

January is the month with the least rainfall. Rain falls for 6.8 days and accumulates 0.79" (20mm) of precipitation.

How much does it rain in January?

In Washington, in January, during 6.8 rainfall days, 0.79" (20mm) of precipitation is typically accumulated.

How much does it snow in January?

In January, it is snowing for 11.6 days. Throughout January, 2.83" (72mm) of snow is accumulated.

What is the average length of the day in January?

The average day length in January is 9h and 25min.

When is the sunrise / sunset in January?

In January, on the first day of the month, sunrise is at 7:20 am and sunset at 4:23 pm. On the last day of the month, sunrise is at 7:04 am and sunset at 4:58 pm EST.

How long on average sun shines in January?

In January, the average sunshine duration is 4.3h.

What is the UV index reading in January?

In Washington, the average daily maximum UV index in January is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in January
Washington, NH

Average temperature in January - Washington, NH
  • Average high temperature in January: 25.5°F

The warmest month (with the highest average high temperature) is July (78.4°F).
The month with the lowest average high temperature is January (25.5°F).

  • Average low temperature in January: 13.1°F

The month with the highest average low temperature is July (58.1°F).
The coldest month (with the lowest average low temperature) is January (13.1°F).

Average pressure in January
Washington, NH

Average pressure in January - Washington, NH
  • Average pressure in January: 30.01"Hg

The month with the highest atmospheric pressure is November (30.07"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in January
Washington, NH

Average wind speed in January - Washington, NH
  • Average wind speed in January: 7.8mph

The windiest months (with the highest average wind speed) are January and February (7.8mph).
The calmest month (with the lowest average wind speed) is August (5mph).

Average humidity in January
Washington, NH

Average humidity in January - Washington, NH
  • Average humidity in January: 86%

The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is April (75%).

Average rainfall in January
Washington, NH

Average rainfall in January - Washington, NH
  • Average rainfall in January: 0.79"

The wettest month (with the highest rainfall) is October (1.61").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days in January
Washington, NH

Average rainfall days in January - Washington, NH
  • Average rainfall days in January: 6.8 days

The month with the highest number of rainy days is May (14.4 days).
The month with the least rainy days is February (5.8 days).

Average snowfall in January
Washington, NH

Average snowfall in January - Washington, NH
  • Average snowfall in January: 2.83"

The month with the highest snowfall is February (3.82").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in January
Washington, NH

Average snowfall days in January - Washington, NH
  • Average snowfall days in January: 11.6 days

The month with the highest number of snowfall days is February (13.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in January /
Average sunshine in January
Washington, NH

Average daylight in January / Average sunshine in January - Washington, NH
  • Average daylight in January: 9h and 2min

The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in January: 4h and 2min

The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).

Average sunshine days in January
Washington, NH

Average sunshine days in January - Washington, NH
  • Average sunshine days in January: 17.6 days

The month with the most sunshine days is January (17.6 days).
The month with the least sunshine days is April (12.9 days).

Average UV index in January
Washington, NH

Average UV index in January - Washington, NH
  • Average UV index in January: 2

The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are February and December (UV index 1).

Average cloud cover in January
Washington, NH

Average cloud cover in January - Washington, NH
  • Average cloud cover in January: 54

The month with the most cloud cover is February (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 37).

Average visibility in January
Washington, NH

Average visibility in January - Washington, NH
  • Average visibility in January: 5mi

The months with the highest visibility are January, March, April, May, June, July, August, October, November and December (5mi).
The months with the lowest visibility are February and September (4mi).

Washington, New Hampshire, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location