June is normally a wet month. Snow still covers high, shaded basins and surrounds trees. July, August, and early September are dry months. Daytime temperatures are the 80-90 degree range. Showers are frequent.
Nights are very cool.
Snow occur at any time. Heavy snow generally occurs in late October and early November. If you are a skier or winter camper, late February through May provide the best snow conditions and longer days. When planning an extended backcountry trip, be informed of potential avalanche conditions. There are about 45 miles of maintained Forest Service system trails in the Mission Mountains.