Last frost date in Florissant, Missouri
April 2
Average last frost in spring. In an early year (1 in 10) it's over by March 17; in a late year (1 in 10) it comes after April 17.
November 4
Average first frost in fall. 1 year in 10 it comes by October 23.
Source: NOAA U.S. Climate Normals 1991–2020, station St Louis Lambert International AP (USW00013994), 4.1 miles from Florissant, elevation 531 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
This station is also the nearest one for Bellefontaine Neighbors, Bridgeton, Ferguson, Hazelwood, Jennings, Overland and St. Ann, so their frost dates are the same as Florissant's.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 17 | Apr 2 | Apr 17 |
| First frost in fall | Oct 23 | Nov 4 | Nov 18 |
Frost-free days in an average year: 215
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 13 | Oct 26 |
| Frost (32°F) | Every year | Apr 2 | Nov 4 |
| Hard freeze (28°F) | Every year | Mar 23 | Nov 13 |
Nights at 32°F or colder in an average year: 85
What to plant now in Florissant
- Corn saladSept 15 – Nov 1Now
- Upland cressSept 15 – Nov 1Now
- Rhubarb plantsNov 1 – Dec 1Soon
- Asparagus plantsNov 15 – Jan 1Soon
- Spring planting calendar for an average last frost around March 30 Florissant: April 2
- Fall planting calendar for an average first frost around October 30 Florissant: November 4
Planting dates: USDA Home and Garden Bulletin No. 9 (1967), “Suburban and Farm Vegetable Gardens,” tables 4 and 5. How we match the table.
Nearby in Missouri
- St. Charles 10 mi · last frost Apr 8
- St. Louis 12 mi · last frost Apr 1
- St. Peters 15 mi · last frost Apr 9
- Chesterfield 17 mi · last frost Apr 4
- O'Fallon 21 mi · last frost Apr 10
Updated