Frost dates · Missouri
When is the first frost in St. Louis?
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- Tomorrow51°F / 28°FClear skies
- Monday52°F / 35°FClear skies
Fresh, the way a fridge is fresh.
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In a typical year, St. Louis’s first frost comes around November 4 and its last around April 2.
One year in ten the first frost comes as early as October 23, and nine years in ten it has arrived by November 18. One year in ten the last frost is over as early as March 17, and nine years in ten it is over by April 17. St. Louis averages about 85 nights a year at 32°F or colder, with about 215 frost-free days in between in a typical year. It’s frost season here, and the last frost usually comes around April 2. That makes it the 36th latest first frost of the 117 cities we track where it freezes most years.
Last updated
A freeze is in the forecast for the next 48 hours.
St. Louis waits until November for its first frost, then spends the winter acting like it was never warm.
Live 48-hour check from OpenWeatherMap, refreshed about every half hour. Alerts from the National Weather Service.
Frost dates, early, typical and late years
| Early year (1 in 10) | Typical | Late year (1 in 10) | |
|---|---|---|---|
| First frost | October 23 | November 4 | November 18 |
| Last frost | March 17 | April 2 | April 17 |
A frost date here is a night when the official thermometer reads 32°F or colder. Frost on the ground can show up on clear, calm nights a few degrees milder.
Cities with about the same first frost
- Erie, Pennsylvania: first frost around November 4
- Raleigh, North Carolina: first frost around November 4
- Richmond, Virginia: first frost around November 4
Source: NOAA U.S. Climate Normals, 1991 to 2020, station USW00013994.