Galena (IL) Weather & Climate: Best Time to Visit

In Galena, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -2°C (28°F).

At night, temperatures range from around 17°C (63°F) in July to -12°C (10°F) in January.

Check out our detailed temperature page for more information.

Temperature ranges by month

Galena experiences significant rain/snowfall throughout the year, averaging 1055 mm (42 in) of precipitation annually. Galena can be quite wet during June, receiving approximately 164 mm (6.5 in) of precipitation over 13 rainy days.

In contrast, during the driest month (January), you will experience much drier conditions, with 27 mm (1.1 in) of precipitation spread across 9 snowy days. For more details, please visit our Galena Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

The average number of days each month with precipitation

Galena can be enjoyed more throughout the sunniest month of June under a blue sky, with approximately 10.2 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 3.6 hours of sunlight per day.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Daily hours of sunshine