Does the temperature have to be 32 degrees for snow to fall?
No. What's important is the temperature in the cloud where the snow forms; that obviously must be freezing-usually well below freezing. Snow may fall...and stick...even when temperatures are above freezing...usually in the mid 30's. That's because colder air often accompanies heavier snow showers to the ground; sometimes the initial melting of snowflakes on the ground can also result in cooling from evaporation.