Last updated: June 24, 2025
In De Kalb, United States, the average temperature in January hovers around 9°C (48°F), creating a cool climate. Expect a range that swings from a chilly -13°C (9°F) at its lowest to a mild 27°C (81°F) at its peak. During this month, precipitation averages 105 mm (4.1 in) spread across approximately 8 days, accompanied by an average humidity of 85%. Whether you’re looking to embrace the brisk air or prepare for the occasional shower, be ready for a diverse weather experience!
In January in De Kalb, the average temperature is 9°C (48°F), with maximums reaching 27°C (81°F) and minimums dropping as low as -13°C (9°F). This wide temperature range means travelers should be prepared for both warm and cold conditions during their visit.
In De Kalb in January, the precipitation amount is 105 mm (4.1 in) over the course of 8 days.
In De Kalb in January humidity is 85%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill enveloping you, making outdoor activities less enjoyable and requiring extra layers to stay warm and comfortable while traveling.
In De Kalb in January, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in De Kalb for better planning.
UV Risk Categories
Weather in De Kalb varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in De Kalb, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 9°C (48°F) | 105 mm (4.1 inches) | 85% | moderate |
February Weather | 12°C (53°F) | 160 mm (6.3 inches) | 84% | high |
March Weather | 15°C (60°F) | 120 mm (4.7 inches) | 82% | very high |
April Weather | 18°C (65°F) | 148 mm (5.8 inches) | 82% | very high |
May Weather | 23°C (74°F) | 120 mm (4.7 inches) | 82% | extreme |
June Weather | 26°C (79°F) | 167 mm (6.6 inches) | 79% | extreme |
July Weather | 27°C (81°F) | 109 mm (4.3 inches) | 82% | extreme |
August Weather | 27°C (81°F) | 129 mm (5.1 inches) | 77% | extreme |
September Weather | 25°C (78°F) | 97 mm (3.8 inches) | 74% | very high |
October Weather | 20°C (69°F) | 109 mm (4.3 inches) | 73% | very high |
November Weather | 12°C (55°F) | 66 mm (2.6 inches) | 85% | high |
December Weather | 11°C (51°F) | 120 mm (4.7 inches) | 88% | moderate |