Figuring out when the first snow fall will occur can be a tricky guessing game, but thankfully this map put together by Climate.gov showcases historical snow fall levels and the days they would first occur to make guesstimating that much easier.
The map showcases the USA and uses colorful dots to showcases which places get snow and when there is a 50/50 chance of them receiving no less than 0.1-inches of the frozen water. The map might be as one assumes with the upper middle portions of the nation getting snowfall in the month of October. From there, the date moves later and later to several regions that don't have snow at all. This map could be helpful to decipher when your area might be getting snow this year.
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