January Weather in Williston, United States

Last updated: June 24, 2025

In January, the average temperature in Williston, United States hovers around -7°C (20°F). While you can expect chilly conditions, temperatures can plummet to a minimum of -30°C (-23°F) or rise up to a mild 13°C (56°F). Prepare for some wet days, as precipitation averages 84 mm (3.3 in) over 13 days, combined with an average humidity of 93%. Embrace the frost and dress warmly!

January Temperature in Williston

In January in Williston, the average temperature is -7°C (20°F), with maximums reaching 13°C (56°F) and minimums dipping as low as -30°C (-23°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

January Weather in Williston: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Williston, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williston, January typically has an average temperature of -7°C (20°F), with highs reaching up to 13°C (56°F) and lows dropping to around -30°C (-23°F).

Data source: Temperature data for Williston generated using information from the Copernicus Climate Change Service.

January Precipitation in Williston

In Williston in January, the precipitation amount is 84 mm (3.3 in) during 13 days, indicating a relatively wet period for that time of year.

January Precipitation Trends in Williston

The chart displays monthly precipitation patterns in Williston, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Williston, January typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 13 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Williston

In Williston in January, humidity is 93%. With an average temperature of -7°C (20°F), this humidity feels like a biting chill that cuts through your layers, making every outdoor adventure feel significantly harsher and requiring extra preparation for comfort during your travels.

January Average Humidity in Williston

This chart illustrates the average monthly humidity levels in Williston, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Williston is approximately 93%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Williston

In Williston in January, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Williston, you can visit Hourly UV Index in Williston.

Maximum UV Index Levels in Williston for January

The chart shows the monthly maximum UV Index (UVI) for Williston in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Williston typically reaches 2, which falls under the low exposure category.

Data source: Williston January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Williston Compares to Other Months

Weather in Williston varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Williston, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Williston, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	84 mm (3.3 inches)	93%	low
February Weather	-5°C (23°F)	81 mm (3.2 inches)	92%	moderate
March Weather	-1°C (30°F)	77 mm (3.0 inches)	86%	moderate
April Weather	6°C (43°F)	109 mm (4.3 inches)	85%	very high
May Weather	13°C (56°F)	91 mm (3.6 inches)	80%	very high
June Weather	18°C (65°F)	97 mm (3.8 inches)	74%	very high
July Weather	21°C (71°F)	108 mm (4.2 inches)	76%	very high
August Weather	20°C (69°F)	87 mm (3.4 inches)	75%	very high
September Weather	16°C (62°F)	71 mm (2.8 inches)	78%	high
October Weather	10°C (50°F)	152 mm (6.0 inches)	86%	moderate
November Weather	2°C (35°F)	112 mm (4.4 inches)	88%	moderate
December Weather	-3°C (26°F)	80 mm (3.2 inches)	89%	low