January Weather in Oshkosh, United States

Last updated: June 24, 2025

In January, the average temperature in Oshkosh, United States hovers around -6°C (21°F), with extremes ranging from a chilling -30°C (-22°F) to a milder 7°C (46°F). Expect 43 mm (1.7 in) of precipitation over 6 days, and brace yourself for an average humidity level of 85%—perfect for those cozy indoor moments!

January Temperature in Oshkosh

In January in Oshkosh, the average temperature is -6°C (21°F). Maximums can reach 7°C (46°F), while minimums can drop as low as -30°C (-22°F). Be prepared for cold weather and dress warmly if you're planning to travel during this time.

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

The chart illustrates January temperature patterns in Oshkosh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oshkosh, January typically has an average temperature of -6°C (21°F), with highs reaching up to 7°C (46°F) and lows dropping to around -30°C (-22°F).

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

January Precipitation in Oshkosh

In Oshkosh in January, the precipitation amount is 43 mm (1.7 in) over a period of 6 days.

January Precipitation Trends in Oshkosh

The chart displays monthly precipitation patterns in Oshkosh, 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 Oshkosh, January typically receives around 43 mm (1.7 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in Oshkosh

In Oshkosh in January, humidity is 85%. With an average temperature of -6°C (21°F), this humidity feels like a damp chill that seeps into your bones, making travel uncomfortable and forcing you to bundle up even more than usual as you navigate through frosty air.

January Average Humidity in Oshkosh

This chart illustrates the average monthly humidity levels in Oshkosh, 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 Oshkosh is approximately 85%, 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 Oshkosh

In Oshkosh in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Oshkosh, you can check the information here.

Maximum UV Index Levels in Oshkosh for January

The chart shows the monthly maximum UV Index (UVI) for Oshkosh 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 Oshkosh typically reaches 3, which falls under the moderate exposure category.

Data source: Oshkosh 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 Oshkosh Compares to Other Months

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

This table compares monthly weather conditions in Oshkosh, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	43 mm (1.7 inches)	85%	moderate
February Weather	-6°C (21°F)	46 mm (1.8 inches)	85%	moderate
March Weather	0°C (32°F)	60 mm (2.4 inches)	85%	moderate
April Weather	6°C (43°F)	94 mm (3.7 inches)	85%	very high
May Weather	14°C (57°F)	107 mm (4.2 inches)	78%	very high
June Weather	20°C (69°F)	101 mm (4.0 inches)	80%	very high
July Weather	23°C (74°F)	100 mm (3.9 inches)	78%	very high
August Weather	22°C (71°F)	107 mm (4.2 inches)	76%	very high
September Weather	18°C (64°F)	75 mm (3.0 inches)	79%	high
October Weather	11°C (51°F)	101 mm (4.0 inches)	83%	moderate
November Weather	2°C (36°F)	47 mm (1.8 inches)	88%	moderate
December Weather	-2°C (28°F)	47 mm (1.9 inches)	81%	low