Murphy's Law of Weather vs. Gumption
"You can apathetically sit around the house for hours, and the weather will be sunny and mild. But then just as soon as you actually manage to groggily struggle up off'n yer but and head for the door to be productive with outdoor activities, it will either start raining, the temps will soar/plummet, or the breeze will die down and allow black flies and mosquitoes to swarm you."
I am a long-term vicitim of Murphy's Law of Weather vs. Gumption, so I employ the unconventional strategy of working naked outdoors (long live tall dense shrubbery along the road out front!) so that I can feel cooler and move about more easily than I could with restrictive clothing, and thus I am able to strugglingly get work done during more-favorable weather, even when I strongly don't feel like it.