January Weather in Ironwood, United States

Last updated: June 24, 2025

In January, the average temperature in Ironwood, United States hovers around -9°C (16°F), with possible extremes ranging from a chilling -28°C (-19°F) to a more mild 7°C (45°F). During this month, expect about 39 mm (1.5 in) of precipitation spread across 11 days, contributing to an average humidity of a damp 93%. Prepare for a truly wintry experience!

January Temperature in Ironwood

In January in Ironwood, the average temperature is -9°C (16°F), with maximums reaching 7°C (45°F) and minimums dropping to -28°C (-19°F). It's advisable to pack warm clothing and prepare for possibly severe cold weather if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Ironwood, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ironwood, January typically has an average temperature of -9°C (16°F), with highs reaching up to 7°C (45°F) and lows dropping to around -28°C (-19°F).

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

January Precipitation in Ironwood

In Ironwood in January, the precipitation amount is 39 mm (1.5 in) over the course of 11 days.

January Precipitation Trends in Ironwood

The chart displays monthly precipitation patterns in Ironwood, 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 Ironwood, January typically receives around 39 mm (1.5 inches) of precipitation spread over approximately 11 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 Ironwood

In Ironwood in January, humidity is 93%. With an average temperature of -9°C (16°F), this humidity feels like a biting chill that seeps through your layers, making travel outside an exercise in endurance as the cold dampness wraps around you, leaving you longing for warmth and a cozy respite.

January Average Humidity in Ironwood

This chart illustrates the average monthly humidity levels in Ironwood, 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 Ironwood is approximately 93%, 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 Ironwood

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

Maximum UV Index Levels in Ironwood for January

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

Data source: Ironwood 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 Ironwood Compares to Other Months

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

This table compares monthly weather conditions in Ironwood, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	39 mm (1.5 inches)	93%	low
February Weather	-9°C (16°F)	52 mm (2.1 inches)	93%	moderate
March Weather	-2°C (28°F)	52 mm (2.0 inches)	89%	moderate
April Weather	3°C (38°F)	87 mm (3.4 inches)	85%	very high
May Weather	12°C (54°F)	87 mm (3.4 inches)	76%	very high
June Weather	18°C (65°F)	111 mm (4.4 inches)	71%	very high
July Weather	21°C (70°F)	87 mm (3.4 inches)	70%	very high
August Weather	19°C (67°F)	110 mm (4.3 inches)	71%	very high
September Weather	15°C (60°F)	94 mm (3.7 inches)	73%	high
October Weather	8°C (46°F)	112 mm (4.4 inches)	81%	moderate
November Weather	-1°C (31°F)	61 mm (2.4 inches)	87%	moderate
December Weather	-6°C (22°F)	74 mm (2.9 inches)	91%	low