Last frost date in St. Charles, Missouri
April 8
Average last frost in spring. In an early year (1 in 10) it's over by March 23; in a late year (1 in 10) it comes after April 24.
October 29
Average first frost in fall. 1 year in 10 it comes by October 16.
Source: NOAA U.S. Climate Normals 1991–2020, station St Charles Elm Pt (USC00237397), 1.3 miles from St. Charles, elevation 472 ft. NOAA National Centers for Environmental Information. These are long-term averages, not a forecast.
| Early year | Average | Late year | |
|---|---|---|---|
| Last frost in spring | Mar 23 | Apr 8 | Apr 24 |
| First frost in fall | Oct 16 | Oct 29 | Nov 12 |
Frost-free days in an average year: 203
| Chance in a year | Average last in spring | Average first in fall | |
|---|---|---|---|
| Light frost (36°F) | Every year | Apr 21 | Oct 19 |
| Frost (32°F) | Every year | Apr 8 | Oct 29 |
| Hard freeze (28°F) | Every year | Mar 30 | Nov 10 |
Nights at 32°F or colder in an average year: 105
What to plant now in St. Charles
- 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 April 10 St. Charles: April 8
- Fall planting calendar for an average first frost around October 30 St. Charles: October 29
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. Peters 5 mi · last frost Apr 9
- Chesterfield 10 mi · last frost Apr 4
- Florissant 10 mi · last frost Apr 2
- O'Fallon 11 mi · last frost Apr 10
- Wildwood 17 mi · last frost Apr 12
Updated