reminds me of the time I was bike commuting year 'round. I was keeping my bike outside for convenience. when it got colder I still kept it outside. as the weather deteriorated, when I got home it required more wiping of road debris incl. slush. I started squirting it w/ water from my bottle & if nec. getting a bit more from in the house, then wiped parts of it w/ paper towels. if it wasn't going to rain or snow over night, it stayed outside

eventually it became much colder & one dark morning about 5am I got about 1 mile down the road & realized my rear derailer wasn't shifting. in the freezing cold, before I could warm up, in the dark, I had to disassemble the rear cable housing at the rear derailer, clean out the frozen water, by hand w/o solvents, etc, re-assemble & then got under way, able to shift again

after that I brought it into the basement, down the bulkhead steps, every night

I don't bike commute in the winter anymore. so after my rides, in the winter, I bring the bikes back inside, despite the hassle

during fair weather months, if the weather will be dry, I do leave a bike outside for a day or two especially if I expect to ride again soon

I got a bike cover that I've used many times & it seems ok for overnights with very modest weather. I've read keeping any moisture trapped within the cover is bad for the bike so I try to keep the cover off as much as possible, especially during high humidity. I'm glad I bought the cover





you can get them on Amazon for not a lot of money. the one I have is
Puroma Bike Cover Outdoor Waterproof Bicycle Covers Rain Sun UV Dust Wind Proof with Lock Hole for Mountain Road Electric Bike