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January Weather in Oswego, United States

Last updated: June 24, 2025

In January, the average temperature in Oswego, United States hovers around -2°C (29°F), with a minimum drop to -18°C (0°F) and a potential high of 13°C (56°F). Expect a total precipitation of 108 mm (4.3 in) spread over 16 days, contributing to an average humidity of 90%. Stay warm and prepared for the chilly days ahead!

January Temperature in Oswego

In January in Oswego, the average temperature is -2°C (29°F). The maximum can reach 13°C (56°F), while the minimum can drop as low as -18°C (0°F). Travelers should be prepared for a wide range of temperatures and dress in layers to stay comfortable.

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 -2°C (29°F), with highs reaching up to 13°C (56°F) and lows dropping to around -18°C (0°F).
JanFebMarAprMayJunJulAugSepOctNovDec282934435262727266554234
Data source: Temperature data for Oswego generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Oswego

In Oswego in January, the total precipitation amount is 108 mm (4.3 in), which falls over the course of 16 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 108 mm (4.3 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec108104921271179017711995187137140
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Oswego

In Oswego in January, humidity is 90%. With an average temperature of -2°C (29°F), this humidity feels like an icy breath enveloping you, making every step outdoors feel even colder and more biting, while also creating a heavy, wet atmosphere that can dampen your spirits for traveling.

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 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%87%88%82%79%78%76%78%84%89%86%
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 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 Oswego, you can visit Hourly UV Index in Oswego.

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 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2468910997532
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.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)108 mm (4.3 inches)90%low
February Weather-2°C (29°F)104 mm (4.1 inches)90%moderate
March Weather1°C (34°F)92 mm (3.6 inches)87%high
April Weather6°C (43°F)127 mm (5.0 inches)88%very high
May Weather11°C (52°F)117 mm (4.6 inches)82%very high
June Weather17°C (62°F)90 mm (3.6 inches)79%very high
July Weather22°C (72°F)177 mm (7.0 inches)78%very high
August Weather22°C (72°F)119 mm (4.7 inches)76%very high
September Weather19°C (66°F)95 mm (3.8 inches)78%high
October Weather13°C (56°F)187 mm (7.4 inches)84%moderate
November Weather6°C (42°F)137 mm (5.4 inches)89%moderate
December Weather1°C (35°F)140 mm (5.5 inches)86%low

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