January Weather in Oswego, United States

Last updated: June 24, 2025

In Oswego, United States, the average temperature in January hovers around -4°C (26°F). However, temperatures can dip as low as -31°C (-23°F) and rise to a maximum of 15°C (59°F). During this month, you can expect approximately 62 mm (2.5 in) of precipitation spread across 8 days, alongside an average humidity level of 82%. Stay prepared for the chilly conditions!

January Temperature in Oswego

In January in Oswego, the average temperature is -4°C (26°F). Maximum temperatures can reach 15°C (59°F), while the minimum can drop as low as -31°C (-23°F). Be prepared for a wide range of temperatures when traveling to Oswego during this month.

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

The chart illustrates January temperature patterns in Oswego, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Oswego, January typically has an average temperature of -4°C (26°F), with highs reaching up to 15°C (59°F) and lows dropping to around -31°C (-23°F).

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

January Precipitation in Oswego

In Oswego in January, the total precipitation amount is 62 mm (2.5 in) over the course of 8 days.

January Precipitation Trends in Oswego

The chart displays monthly precipitation patterns in Oswego, 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 Oswego, January typically receives around 62 mm (2.5 inches) of precipitation spread over approximately 8 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 Oswego

In Oswego in January humidity is 82%. With an average temperature of -4°C (26°F), this humidity feels like an icy blanket enveloping you, making every step outside a battle against the chill and dampness—where the cold bites deeper, and the air feels heavy, reminding you that even in the winter, the moisture can be overwhelming for any traveler unprepared for such conditions.

January Average Humidity in Oswego

This chart illustrates the average monthly humidity levels in Oswego, 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 Oswego is approximately 82%, 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 Oswego

In Oswego 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 Oswego, you can check the information here.

Maximum UV Index Levels in Oswego for January

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

Data source: Oswego 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 Oswego Compares to Other Months

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

This table compares monthly weather conditions in Oswego, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	62 mm (2.5 inches)	82%	moderate
February Weather	-3°C (28°F)	63 mm (2.5 inches)	83%	moderate
March Weather	4°C (40°F)	87 mm (3.4 inches)	84%	high
April Weather	9°C (49°F)	117 mm (4.6 inches)	85%	very high
May Weather	16°C (61°F)	157 mm (6.2 inches)	79%	very high
June Weather	22°C (72°F)	152 mm (6.0 inches)	82%	very high
July Weather	24°C (76°F)	119 mm (4.7 inches)	80%	very high
August Weather	23°C (73°F)	91 mm (3.6 inches)	81%	very high
September Weather	20°C (68°F)	95 mm (3.8 inches)	80%	very high
October Weather	12°C (54°F)	129 mm (5.1 inches)	82%	high
November Weather	4°C (39°F)	57 mm (2.3 inches)	88%	moderate
December Weather	0°C (33°F)	53 mm (2.1 inches)	84%	low