January Weather in Grantsburg, United States

Last updated: June 24, 2025

In January, the average temperature in Grantsburg, United States hovers around -10°C (15°F). Expect chilly days with minimum temperatures plunging to -33°C (-28°F) while the mercury may rise to a maximum of 7°C (45°F). Additionally, anticipate around 20 mm (0.8 in) of precipitation spread over 5 days, coupled with an average humidity level of 87%, creating a crisp and damp atmosphere.

January Temperature in Grantsburg

In January in Grantsburg, the average temperature is -10°C (15°F). Maximums can reach 7°C (45°F), and minimums can drop as low as -33°C (-28°F). Travelers should be prepared for extreme cold and dress accordingly to enjoy their visit.

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

The chart illustrates January temperature patterns in Grantsburg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grantsburg, January typically has an average temperature of -10°C (15°F), with highs reaching up to 7°C (45°F) and lows dropping to around -33°C (-28°F).

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

January Precipitation in Grantsburg

In Grantsburg in January, the precipitation amount is 20 mm (0.8 in) over a period of 5 days.

January Precipitation Trends in Grantsburg

The chart displays monthly precipitation patterns in Grantsburg, 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 Grantsburg, January typically receives around 20 mm (0.8 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 Grantsburg

In Grantsburg in January, humidity is 87%. With an average temperature of -10°C (15°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and the air feel heavy with frost.

January Average Humidity in Grantsburg

This chart illustrates the average monthly humidity levels in Grantsburg, 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 Grantsburg is approximately 87%, 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 Grantsburg

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

Maximum UV Index Levels in Grantsburg for January

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

Data source: Grantsburg 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 Grantsburg Compares to Other Months

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

This table compares monthly weather conditions in Grantsburg, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (15°F)	20 mm (0.8 inches)	87%	low
February Weather	-9°C (16°F)	30 mm (1.2 inches)	90%	moderate
March Weather	0°C (32°F)	47 mm (1.8 inches)	85%	moderate
April Weather	6°C (42°F)	89 mm (3.5 inches)	84%	high
May Weather	14°C (58°F)	104 mm (4.1 inches)	78%	very high
June Weather	21°C (70°F)	80 mm (3.2 inches)	80%	very high
July Weather	23°C (73°F)	100 mm (4.0 inches)	81%	very high
August Weather	21°C (70°F)	127 mm (5.0 inches)	81%	very high
September Weather	17°C (63°F)	96 mm (3.8 inches)	81%	high
October Weather	8°C (47°F)	100 mm (3.9 inches)	84%	moderate
November Weather	0°C (32°F)	38 mm (1.5 inches)	88%	moderate
December Weather	-6°C (22°F)	54 mm (2.1 inches)	84%	low