January Weather in Mason, United States

Last updated: June 24, 2025

In January, the average temperature in Mason, United States hovers around -3°C (26°F). You can expect a significant temperature range, with minimums dipping to -26°C (-15°F) and maximums reaching 15°C (59°F). During this month, the region sees 66 mm (2.6 in) of precipitation spread over 9 days, contributing to an average humidity of 88%.

January Temperature in Mason

In January in Mason, the average temperature is -3°C (26°F), with maximums reaching up to 15°C (59°F) and minimums plummeting as low as -26°C (-15°F). Visitors should be prepared for a wide range of temperatures and dress in layers to stay comfortable during their travels.

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

The chart illustrates January temperature patterns in Mason, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Mason, January typically has an average temperature of -3°C (26°F), with highs reaching up to 15°C (59°F) and lows dropping to around -26°C (-15°F).

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

January Precipitation in Mason

In Mason in January, the precipitation amount is 66 mm (2.6 in) over the course of 9 days.

January Precipitation Trends in Mason

The chart displays monthly precipitation patterns in Mason, 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 Mason, January typically receives around 66 mm (2.6 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 Mason

In Mason in January humidity is 88%. With an average temperature of -3°C (26°F), this humidity feels like an icy dampness that clings to your skin, making every breath feel colder and more challenging, which can make traveling in these conditions quite uncomfortable.

January Average Humidity in Mason

This chart illustrates the average monthly humidity levels in Mason, 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 Mason is approximately 88%, 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 Mason

In Mason 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 Mason, you can visit Hourly UV Index in Mason.

Maximum UV Index Levels in Mason for January

The chart shows the monthly maximum UV Index (UVI) for Mason 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 Mason typically reaches 2, which falls under the low exposure category.

Data source: Mason 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 Mason Compares to Other Months

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

This table compares monthly weather conditions in Mason, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	66 mm (2.6 inches)	88%	low
February Weather	-3°C (28°F)	70 mm (2.8 inches)	87%	moderate
March Weather	3°C (37°F)	73 mm (2.9 inches)	85%	moderate
April Weather	8°C (47°F)	91 mm (3.6 inches)	86%	very high
May Weather	15°C (60°F)	126 mm (5.0 inches)	80%	very high
June Weather	21°C (70°F)	94 mm (3.7 inches)	80%	very high
July Weather	24°C (75°F)	96 mm (3.8 inches)	80%	very high
August Weather	22°C (72°F)	65 mm (2.5 inches)	80%	very high
September Weather	19°C (66°F)	89 mm (3.5 inches)	80%	high
October Weather	12°C (54°F)	115 mm (4.5 inches)	84%	moderate
November Weather	4°C (39°F)	69 mm (2.7 inches)	89%	moderate
December Weather	0°C (32°F)	57 mm (2.3 inches)	86%	low