January Weather in Stillwater, United States

Last updated: June 24, 2025

In Stillwater, United States, the average temperature in January hovers around 4°C (39°F), with temperatures ranging from a brisk -16°C (4°F) to a mild 24°C (75°F). Expect approximately 57 mm (2.3 in) of precipitation over 5 days, coupled with an average humidity of 79%. Dress accordingly to enjoy the unique weather this month!

January Temperature in Stillwater

In January in Stillwater, the average temperature is 4°C (39°F). Maximums can reach 24°C (75°F), and minimums can drop as low as -16°C (4°F). Be prepared for a wide range of temperatures when traveling during this month.

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

The chart illustrates January temperature patterns in Stillwater, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Stillwater, January typically has an average temperature of 4°C (39°F), with highs reaching up to 24°C (75°F) and lows dropping to around -16°C (4°F).

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

January Precipitation in Stillwater

In Stillwater in January, the total precipitation amount is 57 mm (2.3 in) accumulated over 5 days.

January Precipitation Trends in Stillwater

The chart displays monthly precipitation patterns in Stillwater, 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 Stillwater, January typically receives around 57 mm (2.3 inches) of precipitation spread over approximately 5 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 Stillwater

In Stillwater in January, humidity is 79%. With an average temperature of 4°C (39°F), this humidity feels like a chilly blanket enveloping you, making travel outdoors brisk and invigorating but also requiring extra layers to stay comfortable amidst the dampness.

January Average Humidity in Stillwater

This chart illustrates the average monthly humidity levels in Stillwater, 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 Stillwater is approximately 79%, 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 Stillwater

In Stillwater 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 Stillwater for better planning.

Maximum UV Index Levels in Stillwater for January

The chart shows the monthly maximum UV Index (UVI) for Stillwater 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 Stillwater typically reaches 4, which falls under the moderate exposure category.

Data source: Stillwater 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 Stillwater Compares to Other Months

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

This table compares monthly weather conditions in Stillwater, 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 (39°F)	57 mm (2.3 inches)	79%	moderate
February Weather	5°C (41°F)	45 mm (1.8 inches)	78%	high
March Weather	12°C (53°F)	86 mm (3.4 inches)	75%	high
April Weather	15°C (59°F)	123 mm (4.8 inches)	75%	very high
May Weather	21°C (70°F)	143 mm (5.6 inches)	83%	very high
June Weather	26°C (79°F)	110 mm (4.3 inches)	81%	extreme
July Weather	28°C (83°F)	90 mm (3.6 inches)	78%	extreme
August Weather	27°C (81°F)	91 mm (3.6 inches)	68%	very high
September Weather	24°C (76°F)	81 mm (3.2 inches)	64%	very high
October Weather	16°C (62°F)	108 mm (4.3 inches)	71%	high
November Weather	10°C (50°F)	36 mm (1.4 inches)	82%	moderate
December Weather	6°C (44°F)	35 mm (1.4 inches)	87%	moderate