January Weather in Grass Lake, United States

Last updated: June 24, 2025

In January, the average temperature in Grass Lake, United States hovers around -3°C (26°F), with the mercury occasionally dipping as low as -27°C (-16°F) and peaking at 15°C (59°F). Expect to see about 65 mm (2.6 in) of precipitation over 9 days, and brace yourself for a high average humidity of 88%.

January Temperature in Grass Lake

In January in Grass Lake, the average temperature is -3°C (26°F), with maximums reaching 15°C (59°F) and minimums dropping as low as -27°C (-16°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your trip.

January Weather in Grass Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Grass Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grass Lake, 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 -27°C (-16°F).

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

January Precipitation in Grass Lake

In Grass Lake in January, the precipitation amount is 65 mm (2.6 in) over the course of 9 days.

January Precipitation Trends in Grass Lake

The chart displays monthly precipitation patterns in Grass Lake, 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 Grass Lake, January typically receives around 65 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 Grass Lake

In Grass Lake 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 Grass Lake

This chart illustrates the average monthly humidity levels in Grass Lake, 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 Grass Lake 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 Grass Lake

In Grass Lake 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 Grass Lake, you can visit Hourly UV Index in Grass Lake.

Maximum UV Index Levels in Grass Lake for January

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

Data source: Grass Lake 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 Grass Lake Compares to Other Months

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

This table compares monthly weather conditions in Grass Lake, 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)	65 mm (2.6 inches)	88%	low
February Weather	-3°C (28°F)	69 mm (2.7 inches)	87%	moderate
March Weather	3°C (38°F)	78 mm (3.1 inches)	85%	moderate
April Weather	8°C (47°F)	92 mm (3.6 inches)	86%	very high
May Weather	15°C (60°F)	123 mm (4.8 inches)	80%	very high
June Weather	21°C (70°F)	84 mm (3.3 inches)	80%	very high
July Weather	24°C (75°F)	101 mm (4.0 inches)	80%	very high
August Weather	22°C (72°F)	65 mm (2.6 inches)	80%	very high
September Weather	19°C (66°F)	74 mm (2.9 inches)	80%	high
October Weather	12°C (54°F)	109 mm (4.3 inches)	84%	moderate
November Weather	4°C (39°F)	75 mm (3.0 inches)	89%	moderate
December Weather	0°C (33°F)	54 mm (2.1 inches)	86%	low