If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Solon Springs: The hottest months are usually July and August, with an average temperature of 18°C, while the coldest months are January and February, with an average of -7°C. The snowiest months in Solon Springs are March, April, December and January, with each month seeing an average of 24 cm of snowfall.