Mulled wine is a good option sometimes. Get yourself a good recipe. It can be made and kept warm in a crockpot.
Fleece thermal underwear, top and bottom. It’s a game changer. Wear them under your clothes. Such a huge difference.
Heated blankets. They’re cheap, and you turn it on about 20 mins before you get into bed and it’s all nice and toasty warm.. it’s like getting into a bed that’s already had someone in it for a while.
Also, check up on your weather stripping and anywhere else you could be losing heart from. For example, I live in an apartment with an ac unit built into the wall. Cover your exterior walls with a tapestry or blankets. Put a rug down on any non carpeted floors(they’re cheap enough on amazon).
Oh, and be sure to bitch about the cold constantly. That seems to work for every single person I’ve ever met, anyways.
Quick edit:. Wool socks, too. They’re warmer than normal socks and don’t stay wet.
flamethrower+Molotov cocktails=no snow
Fuzzy slippers, fuzzy blankets, and candles that smell like Christmas all help.
Also there is no bad weather, only bad jackets. Layer them on top of each other until you are no longer cold.