Galena Il May 2024. Enjoy snowshoeing at casper bluff in the winter or watch the great galena balloon race in summer. Get set for grant’s home front civil war reenactment, held the last weekend of every april in galena, il.

May weather forecast for galena, illinois: In galena, in december, during 10.5 snowfall days, 3.03 (77mm) of snow is typically accumulated.