Last updated: June 24, 2025
In December, the average temperature in Galena, United States hovers around 2°C (36°F). Temperatures can vary significantly, with a chilling minimum of -17°C (2°F) and a refreshing maximum of 18°C (65°F). Expect about 97 mm (3.8 in) of precipitation spread over 12 days, contributing to an average humidity level of 86%.
In December in Galena, the average temperature is 2°C (36°F). Maximums can reach 18°C (65°F) and minimums can be as low as -17°C (2°F). Be prepared for a wide range of temperatures and pack accordingly for your trip.
In Galena in December, the precipitation amount is 97 mm (3.8 in) spread over 12 days.
In Galena in December, humidity is 86%. With an average temperature of 2°C (36°F), this humidity feels like a biting chill that clings to your skin, making outdoor exploration uncomfortable and dampening any enthusiasm for travel.
In Galena in December, 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 Galena, you can check the information here.
UV Risk Categories
Weather in Galena varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Galena, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -1°C (30°F) | 78 mm (3.1 inches) | 88% | moderate |
February Weather | 1°C (34°F) | 104 mm (4.1 inches) | 87% | moderate |
March Weather | 5°C (42°F) | 105 mm (4.1 inches) | 87% | high |
April Weather | 11°C (52°F) | 116 mm (4.6 inches) | 87% | very high |
May Weather | 17°C (63°F) | 124 mm (4.9 inches) | 81% | very high |
June Weather | 22°C (72°F) | 144 mm (5.7 inches) | 82% | very high |
July Weather | 24°C (76°F) | 111 mm (4.4 inches) | 81% | very high |
August Weather | 23°C (73°F) | 74 mm (2.9 inches) | 78% | very high |
September Weather | 20°C (69°F) | 86 mm (3.4 inches) | 78% | very high |
October Weather | 14°C (58°F) | 99 mm (3.9 inches) | 82% | high |
November Weather | 5°C (42°F) | 96 mm (3.8 inches) | 89% | moderate |
December Weather | 2°C (36°F) | 97 mm (3.8 inches) | 86% | moderate |