January Weather in Williston, United States

Last updated: June 24, 2025

In January, the average temperature in Williston, United States hovers around 9°C (49°F). Expect a range where it can dip as low as -8°C (18°F) and occasionally soar to 26°C (79°F). This month also brings about 88 mm (3.4 in) of precipitation over approximately 9 days, with humidity levels peaking at a cozy 86%.

January Temperature in Williston

In January in Williston, the average temperature is 9°C (49°F). Maximum temperatures can reach 26°C (79°F), while minimums can drop as low as -8°C (18°F). Be prepared for a wide range of temperatures and pack accordingly for your travels!

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 9°C (49°F), with highs reaching up to 26°C (79°F) and lows dropping to around -8°C (18°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 88 mm (3.4 in) distributed over 9 days.

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 88 mm (3.4 inches) of precipitation spread over approximately 9 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 86%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill in the air, making travel uncomfortable as the moisture clings to your skin and thickens the atmosphere, creating a sense of heaviness that can tire you quickly.

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 86%, 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 reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Williston for better planning.

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 4, which falls under the moderate 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	9°C (49°F)	88 mm (3.4 inches)	86%	moderate
February Weather	12°C (54°F)	110 mm (4.3 inches)	81%	high
March Weather	15°C (59°F)	81 mm (3.2 inches)	81%	very high
April Weather	18°C (66°F)	117 mm (4.6 inches)	79%	very high
May Weather	23°C (74°F)	102 mm (4.0 inches)	75%	extreme
June Weather	26°C (79°F)	111 mm (4.4 inches)	75%	extreme
July Weather	28°C (82°F)	143 mm (5.6 inches)	80%	extreme
August Weather	27°C (81°F)	144 mm (5.7 inches)	81%	extreme
September Weather	25°C (78°F)	78 mm (3.1 inches)	83%	very high
October Weather	21°C (69°F)	78 mm (3.1 inches)	78%	very high
November Weather	13°C (55°F)	60 mm (2.4 inches)	85%	high
December Weather	11°C (51°F)	122 mm (4.8 inches)	87%	moderate