Taking into account the local weather in Gonzaga is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually June and May with an average temp of 82°F, while the coldest months are January and February with an average of 75°F. The rainiest months in Gonzaga are October, August, July, and November, with each month seeing an average of 14 inches of rainfall.