In general, if you can take a car you can ride an ebike; if there's so much snow that no car except special 4WD can cross, then yes a bike doesn't work either (although it's still better than most cars); and when it's pouring and you'd be completely drenched in the one minute it takes to get to your car, a bike isn't too great either.
But everything else is fine. Weather isn't really a problem on a bike / ebike.
But everything else is fine. Weather isn't really a problem on a bike / ebike.