TENNESSEE — A review of historical weather data shows that while rare, measurable snowfall in May is not entirely impossible in Tennessee, particularly in higher elevations and under specific atmospheric conditions.
Climatologically, Tennessee experiences a steady warming trend through April into May, with average high temperatures typically rising into the 70s and 80s by mid to late spring.
However, late-season cold air intrusions—often referred to as “cold snaps”—can still occur. These events are usually driven by strong high-pressure systems pushing unseasonably cold air southward from Canada into the eastern United States.
For measurable snowfall to occur in May, several conditions must align. First, temperatures throughout a significant portion of the atmosphere must be at or below freezing. Second, sufficient moisture must be present. Third, precipitation must fall at a time when surface temperatures are cold enough to allow accumulation. These factors are increasingly unlikely as the calendar moves deeper into spring.
Historical records indicate that measurable May snowfall in Tennessee is exceedingly rare at lower elevations, including major cities such as Nashville and Memphis, where no well-documented cases of measurable May snow accumulation exist in modern climate records.
However, in the higher elevations of the Appalachian region—particularly in areas like the Great Smoky Mountains—trace snowfall or even light accumulations have been recorded on occasion during early May. These higher elevations can be several degrees cooler than surrounding lowlands, making late-season wintry precipitation more feasible.
For example, the higher peaks along the Tennessee–North Carolina border, which rise above 5,000 to 6,000 feet, have historically experienced brief periods of snow or mixed precipitation in May during unusually cold weather patterns. These events are typically short-lived and melt quickly due to warm ground temperatures and increasing solar radiation.
In summary, while measurable snowfall in May is highly unlikely across most of Tennessee, it remains within the realm of possibility in the state’s highest elevations under rare and specific atmospheric conditions.
