No, it has never snowed in Key West.
Key West holds a truly unique distinction among American cities: there is no recorded instance of snow, sleet, ice, or even frost ever occurring. Not even a single flurry has ever graced this southernmost point of the continental United States. This remarkable absence of wintry precipitation is a direct result of its consistently warm, tropical climate.
A Truly Tropical Climate
Key West's geographic location and prevailing weather patterns are the primary reasons for its complete lack of snow. Situated at the very tip of the Florida Keys archipelago, it experiences a tropical monsoon climate (Am according to the Köppen climate classification). This distinct climate ensures consistently warm temperatures year-round, making snowfall virtually impossible.
Key characteristics of Key West's climate include:
- Consistently Warm Temperatures: Average monthly temperatures never fall below 64.4°F (18°C), even during the coolest months of winter. This means the air temperature from the clouds all the way down to the ground is rarely, if ever, at or below the freezing point (32°F or 0°C) required for snow formation.
- High Humidity: The atmosphere is generally moist, contributing to its lush, tropical environment.
- Oceanic Moderation: Surrounded by warm ocean currents, the vast body of water acts as a temperature regulator, preventing extreme cold fronts from significantly impacting the island.
- Low Latitude: Its close proximity to the equator keeps it well within the warm climate zones, far from the cold air masses that bring snow to more northern regions.
Key West's Consistent Warmth
To further illustrate Key West's perpetually warm conditions, here's a glimpse at its typical average monthly temperatures:
| Month | Average High (°F) | Average Low (°F) |
|---|---|---|
| January | 75 | 67 |
| July | 90 | 80 |
| October | 86 | 76 |
Note: These are illustrative averages; actual daily temperatures may vary slightly but consistently remain above freezing.
This consistent warmth ensures that Key West remains a tropical paradise, completely untouched by the frozen precipitation common in other parts of the country.
For more detailed climate information about Key West, you can refer to reputable sources like the National Weather Service - Key West Climate.
