Williston
North Dakota, USA
Long-term weather forecast
Long-term weather forecast

January weather forecast and climate
Williston, ND

January, the same as December, in Williston, North Dakota, is another subzero cold winter month, with average temperature varying between 0.1°F (-17.7°C) and 21.9°F (-5.6°C).

Temperature

With an average high-temperature of 21.9°F (-5.6°C) and an average low-temperature of 0.1°F (-17.7°C), January is the coldest month.

Humidity

In Williston, the average relative humidity in January is 76.2%.

Rainfall

In January, the rain falls for 7.5 days. Throughout January, 0.6" (15mm) of precipitation is accumulated. Throughout the year, in Williston, there are 96.5 rainfall days, and 14.4" (364.9mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Williston are January through May, September through December. The month with the most snowfall is January when snow falls for 8.7 days and typically aggregates up to 10" (254mm) of snow.

Daylight

In Williston, the average length of the day is 8.9h.

Sunshine

The average sunshine in Williston is 4.7h.

UV index

Months with the lowest UV index in Williston are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from the exposure to the Sun's UV radiation for the ordinary person.
The average daily UV index of 1 transform into the following instructions:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.

What is the coldest month in Williston?

The coldest month in Williston, North Dakota, is January, with an average high-temperature of 21.9°F (-5.6°C) and an average low-temperature of 0.1°F (-17.7°C).

What is the temperature in January in Williston?

In Williston, in January, the average high-temperature is 21.9°F (-5.6°C), and the average low-temperature is 0.1°F (-17.7°C).

What is the average humidity in January in Williston?

In January, the average relative humidity in Williston is 76.2%.

How many days does it rain in January in Williston?

In Williston, during January, the rain falls for 7.5 days and regularly aggregates up to 0.6" (15mm) of precipitation.

How many days does it snow in January in Williston?

In Williston, North Dakota, during January, snow falls for 8.7 days and regularly aggregates up to 10" (254mm) of snow.

What is the snowiest month in Williston?

January is the month with the most snowfall in Williston. Snow falls for 8.7 days and accumulates 10" (254mm) of snow.

How many hours of daylight does Williston have in January?

In Williston, North Dakota, the average length of the day in January is 8.9h.

How many hours of sunshine does Williston have in January?

In January, the average sunshine is 4.7h.

What is the month with the lowest UV index in Williston?

January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Williston, North Dakota.

How high is the UV index in January in Williston?

In January, the average daily maximum UV index in Williston, North Dakota, is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from the exposure to the Sun's UV radiation.
Average temperature in January - Williston, ND
  • Average high temperature in January: 21.9°F

The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (21.9°F).

  • Average low temperature in January: 0.1°F

The month with the highest average low temperature is July (55.8°F).
The coldest month (with the lowest average low temperature) is January (0.1°F).

Average humidity in January - Williston, ND
  • Average humidity in January: 76.2%

The month with the highest relative humidity is December (77.1%).
The month with the lowest relative humidity is August (54.9%).

Average rainfall in January - Williston, ND
  • Average rainfall in January: 0.6"

Wettest months (with the highest rainfall) are June and July (2.5").
The driest month (with the lowest rainfall) is February (0.4").

Average rainfall days in January - Williston, ND
  • Average rainfall days in January: 7.5 days

The month with the highest number of rainy days is June (11.5 days).
The month with the lowest number of rainy days is February (6 days).

Average snowfall in January - Williston, ND
  • Average snowfall in January: 10"

The month with the highest snowfall is January (10").
Months with the lowest snowfall are June, July and August (0").

Average snowfall days in January - Williston, ND
  • Average snowfall days in January: 8.7 days

The month with the highest number of snowfall days is December (9.1 days).
Months with the lowest number of snowfall days are June, July and August (0 days).

Average daylight in January / Average sunshine in January - Williston, ND
  • Average daylight in January: 8.9h

The month with the longest days is June (Average daylight: 16h).
The month with shortest days is December (Average daylight: 8.4h).

  • Average sunshine in January: 4.7h

The month with most sunshine is July (Average sunshine: 11.8h).
The month with least sunshine is December (Average sunshine: 4h).

Average UV index in January - Williston, ND
  • Average UV index in January: 1

The month with the highest UV index is July (UV index 8).
Months with the lowest UV index are January, February, November and December (UV index 1).