January Weather in Williams, United States

Last updated: June 24, 2025

In Williams, United States, the average temperature in January hovers around 4°C (40°F). Expect a chilly climate where temperatures can dip to a minimum of -8°C (17°F) and soar to a maximum of 17°C (63°F). Prepare for approximately 150 mm (5.9 in) of rain spread over 13 days, accompanied by a high average humidity of 84%.

January Temperature in Williams

In January in Williams, the average temperature is 4°C (40°F), with maximums reaching 17°C (63°F) and minimums dipping as low as -8°C (17°F). Be prepared for a mix of chilly and mild days if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Williams, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Williams, January typically has an average temperature of 4°C (40°F), with highs reaching up to 17°C (63°F) and lows dropping to around -8°C (17°F).

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

January Precipitation in Williams

In Williams in January, the precipitation amount is 150 mm (5.9 in) spread over 13 days.

January Precipitation Trends in Williams

The chart displays monthly precipitation patterns in Williams, 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 Williams, January typically receives around 150 mm (5.9 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 Williams

In Williams in January, humidity is 84%. With an average temperature of 4°C (40°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and requiring extra layers to stay warm and dry while traveling.

January Average Humidity in Williams

This chart illustrates the average monthly humidity levels in Williams, 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 Williams is approximately 84%, 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 Williams

In Williams in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Williams, you can check the information here.

Maximum UV Index Levels in Williams for January

The chart shows the monthly maximum UV Index (UVI) for Williams 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 Williams typically reaches 3, which falls under the moderate exposure category.

Data source: Williams 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 Williams Compares to Other Months

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

This table compares monthly weather conditions in Williams, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (40°F)	150 mm (5.9 inches)	84%	moderate
February Weather	4°C (40°F)	155 mm (6.1 inches)	85%	moderate
March Weather	6°C (44°F)	112 mm (4.4 inches)	86%	high
April Weather	9°C (49°F)	91 mm (3.6 inches)	83%	very high
May Weather	13°C (56°F)	57 mm (2.3 inches)	83%	very high
June Weather	18°C (64°F)	21 mm (0.8 inches)	83%	extreme
July Weather	22°C (71°F)	3 mm (0.1 inches)	78%	very high
August Weather	21°C (71°F)	6 mm (0.3 inches)	67%	very high
September Weather	17°C (63°F)	33 mm (1.3 inches)	66%	very high
October Weather	11°C (53°F)	42 mm (1.6 inches)	77%	high
November Weather	7°C (44°F)	96 mm (3.8 inches)	87%	moderate
December Weather	3°C (38°F)	121 mm (4.8 inches)	87%	low