There is no wrong weather, just wrong gear.
(N.b. I ride in the snow for hundreds of kilometers every winter. I know you can take a fatbike to powder snow but that's just too strenuous for most people.)
For example my commute of about 20km has about 10km that gets cleared early in the morning if humanly possible; maybe 9km that usually gets cleared during the evening; and maybe 1km that may take 3-5 days after a big snowstorm.
When faced with something like that, I usually just switch to the bus for a day