1. Board Games.
Never underestimate the power of Monopoly or scrabble or any game you have even if it's a card game. You can have more fun than you think you would and it passes time by super easily.
Haven't had the time to just sit down and read for a while? Now's the chance, get that book or magazine you keep putting of and read it as much as you'd like!
Although it may not be fun, it needs to get done so why not on a day you're doing nothing around the house anyways? Sweep the floor, make your grocery list, do some dishes. You'll thank yourself on a sunny day for having it all out of the way so you can go out and enjoy the weather.
I don't know if it's just me but I love to bake! Why not on a gloomy day to cheer yourself or others around the house up. Even if you don't know how you can easily look it up or even just do it from a box.
If you have been busy a lot and just want a break to relax then go for it! Binge watch that new series you've been looking into lately or continue watching one of your favourites. Have a good day and just do your best not to let the weather bring you down!