Last updated: June 24, 2025
In January, the average temperature in Oswego, United States is a brisk 2°C (36°F), with temperatures ranging from a chilly -18°C (0°F) to a surprisingly warm 21°C (70°F). Expect 67 mm (2.6 in) of precipitation spread over about 7 days, contributing to an average humidity level of 77%. Whether you enjoy winter chill or the pleasant spikes in warmth, this month offers a variety of weather experiences!
In January in Oswego, the average temperature is 2°C (36°F). Maximum temperatures can reach 21°C (70°F), while minimums can dip as low as -18°C (0°F). Be prepared for a wide range of weather, ensuring you dress in layers to stay comfortable while exploring Oswego.
In Oswego in January, the total precipitation amount is 67 mm (2.6 in) over a span of 7 days.
In Oswego in January, humidity is 77%. With an average temperature of 2°C (36°F), this humidity feels like a chilly embrace, making every breath feel damp and cold, which can be challenging for traveling but adds an invigorating layer to the experience.
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.
UV Risk Categories
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.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 2°C (36°F) | 67 mm (2.6 inches) | 77% | moderate |
February Weather | 3°C (38°F) | 65 mm (2.6 inches) | 76% | moderate |
March Weather | 10°C (51°F) | 128 mm (5.0 inches) | 71% | high |
April Weather | 14°C (58°F) | 124 mm (4.9 inches) | 73% | very high |
May Weather | 20°C (68°F) | 239 mm (9.4 inches) | 83% | very high |
June Weather | 26°C (78°F) | 96 mm (3.8 inches) | 83% | extreme |
July Weather | 27°C (81°F) | 98 mm (3.8 inches) | 81% | extreme |
August Weather | 26°C (79°F) | 117 mm (4.6 inches) | 73% | very high |
September Weather | 24°C (75°F) | 94 mm (3.7 inches) | 67% | very high |
October Weather | 16°C (60°F) | 127 mm (5.0 inches) | 72% | high |
November Weather | 9°C (48°F) | 53 mm (2.1 inches) | 82% | moderate |
December Weather | 6°C (42°F) | 40 mm (1.6 inches) | 85% | moderate |