Taking into account the local weather in Lyssons is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually September and August with an average temp of 82°F, while the coldest months are March and February with an average of 78°F. The rainiest months in Lyssons are October, June, May, and August, with each month seeing an average of 8 inches of rainfall.