As winter approaches, many regions in the United States anticipate the arrival of their first accumulating snow. Meteorologists define accumulating snow as any snowfall that totals 0.1 inches or more. This threshold distinguishes measurable snow from light flurries or snow that melts upon contact with the ground.
When Does the First Accumulating Snow Typically Arrive?
The timing of accumulating snow varies significantly across the country. Based on long-term data from 1991-2020, regions experience their first measurable snowfall at different times. The following breakdown highlights notable trends:
- September to October: The Rockies, Northern Plains, northern Great Lakes, and northern New England often see their first snow in early autumn.
- November to December: Much of the Midwest, including the Ohio Valley and the rest of the Great Lakes, typically receives its first snow during these months.
The South is not frequently included in these statistics, as many southern areas do not experience accumulating snow every year. When snow does occur, the best chances are usually in January and February.
Regional Snowfall Trends
Here’s a deeper look at when different parts of the country can expect their first accumulating snow:
- Midwest: Most regions see snow between October and November, with northern Michigan and western Dakotas likely experiencing snowfall in October. Areas like southern Missouri may not see snow until December.
- Northeast and Mid-Atlantic: The first snow in the mountains of northern New England and the Adirondacks generally occurs in October. The rest of the Northeast often follows in November, while cities along the Interstate 95 corridor, including New York City, may wait until December.
- West: Higher elevations, such as those in western Montana and Colorado, can see snow in September. Lower elevations usually receive their first snow in October, while regions in northern New Mexico and the interior Northwest typically see snow in November.
- South: In southern locales, including Atlanta and Dallas, the average chance for measurable snow is between January and February. However, areas such as the Texas Panhandle may anticipate snow as early as November.
Conclusion
Understanding when the first accumulating snow typically arrives can help residents prepare for the winter season. While many areas might see their first flakes as early as September, others might not experience significant snowfall until later months. Be sure to check your local weather forecasts for the most accurate predictions.
