Last updated: June 24, 2025
In January, the average temperature in Rockford, United States hovers around -7°C (20°F). Be prepared for a chilly range, as temperatures can dip to a bone-chilling -34°C (-28°F) or climb to a mild 12°C (53°F). During this month, expect approximately 39 mm (1.5 in) of precipitation spread over about 5 days, with an average humidity level of 82%. Stay warm and dry!
In January in Rockford, the average temperature is -7°C (20°F). The maximum can reach 12°C (53°F), while the minimum can dip as low as -34°C (-28°F). Travelers should be prepared for extremely cold conditions, especially during nighttime, and dress in layers to stay warm.
In Rockford in January, the precipitation amount is 39 mm (1.5 in) spread over a duration of 5 days.
In Rockford in January, humidity is 82%. With an average temperature of -7°C (20°F), this humidity feels like an uncomfortable chill that seeps into your bones, making traveling unpleasant and necessitating extra layers to stay warm.
In Rockford 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 Rockford, you can check the information here.
UV Risk Categories
Weather in Rockford varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Rockford, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -7°C (20°F) | 39 mm (1.5 inches) | 82% | moderate |
February Weather | -7°C (19°F) | 48 mm (1.9 inches) | 84% | moderate |
March Weather | 2°C (36°F) | 74 mm (2.9 inches) | 80% | moderate |
April Weather | 8°C (46°F) | 77 mm (3.0 inches) | 81% | very high |
May Weather | 16°C (61°F) | 162 mm (6.4 inches) | 74% | very high |
June Weather | 22°C (73°F) | 128 mm (5.0 inches) | 80% | extreme |
July Weather | 24°C (75°F) | 97 mm (3.8 inches) | 80% | very high |
August Weather | 22°C (71°F) | 115 mm (4.5 inches) | 77% | very high |
September Weather | 19°C (66°F) | 101 mm (4.0 inches) | 75% | very high |
October Weather | 10°C (50°F) | 125 mm (4.9 inches) | 80% | moderate |
November Weather | 2°C (36°F) | 49 mm (1.9 inches) | 87% | moderate |
December Weather | -2°C (28°F) | 36 mm (1.4 inches) | 83% | moderate |