January Weather in Tomah, United States

Last updated: June 24, 2025

In Tomah, United States, the average temperature for January hovers around -7°C (19°F). Temperatures can drop as low as -33°C (-26°F) and reach a maximum of 9°C (48°F). During this month, expect approximately 37 mm (1.5 in) of precipitation over 7 days, with an average humidity of 84%. Bundle up and stay dry!

January Temperature in Tomah

In January in Tomah, the average temperature is -7°C (19°F). Maximums can reach 9°C (48°F) and minimums can be as low as -33°C (-26°F). Be prepared for a wide range of temperatures if you plan to travel during this time.

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

The chart illustrates January temperature patterns in Tomah, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tomah, January typically has an average temperature of -7°C (19°F), with highs reaching up to 9°C (48°F) and lows dropping to around -33°C (-26°F).

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

January Precipitation in Tomah

In Tomah in January, the precipitation amount is 37 mm (1.5 in) during a span of 7 days.

January Precipitation Trends in Tomah

The chart displays monthly precipitation patterns in Tomah, 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 Tomah, January typically receives around 37 mm (1.5 inches) of precipitation spread over approximately 7 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 Tomah

In Tomah in January humidity is 84%. With an average temperature of -7°C (19°F), this humidity feels like a biting chill that cuts through layers of clothing, making outdoor travel uncomfortable and prompting a need for frequent warm breaks indoors.

January Average Humidity in Tomah

This chart illustrates the average monthly humidity levels in Tomah, 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 Tomah 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 Tomah

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

Maximum UV Index Levels in Tomah for January

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

Data source: Tomah 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 Tomah Compares to Other Months

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

This table compares monthly weather conditions in Tomah, 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 (19°F)	37 mm (1.5 inches)	84%	low
February Weather	-6°C (21°F)	53 mm (2.1 inches)	85%	moderate
March Weather	1°C (35°F)	59 mm (2.3 inches)	84%	moderate
April Weather	7°C (45°F)	89 mm (3.5 inches)	83%	very high
May Weather	15°C (59°F)	134 mm (5.3 inches)	75%	very high
June Weather	21°C (70°F)	116 mm (4.6 inches)	79%	very high
July Weather	23°C (74°F)	101 mm (4.0 inches)	75%	very high
August Weather	21°C (70°F)	112 mm (4.4 inches)	69%	very high
September Weather	18°C (64°F)	106 mm (4.2 inches)	74%	high
October Weather	10°C (50°F)	106 mm (4.2 inches)	79%	moderate
November Weather	2°C (35°F)	51 mm (2.0 inches)	88%	moderate
December Weather	-3°C (27°F)	45 mm (1.8 inches)	82%	low