Nature is Cranky

Summer this year doesn't feel like summer at all. Nature just seems cranky. It rains whenever it wants to rain. Oh yeah, the sun is out, but you still can't play Frisbee with your dog since the sky might get gloomy all of the sudden. It's already the middle of summer vacation, but I still haven't accomplished anything on my summer itinerary. Will I just do away with my plans or just pursue it and accept whatever happens?
I don't know when to wear shorts or thick pants, slippers or boots, sando or jacket, etc. since the change of weather is like a rollercoaster – extreme and sudden.