Frost dates for 63005 — Chesterfield, MO
Last spring frostApr 12median date
First fall frostOct 23median date
Growing season194 daysfrost-free
Hardiness zone6bZone 6b
How Chesterfield compares
- In 8 years out of 10, the last spring frost in Chesterfield falls between March 28 and April 27, a 30-day window. The first fall frost falls between October 11 and November 5.
- The median last frost is the same as the Missouri median of Apr 12.
- Its 194-day growing season is longer than 44% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is 10 days earlier than the zone 6b median of Apr 22. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6b chart.
- The weather station records an average of 105 nights a year at or below 32°F.
- Compared with Saint Peters, MO, 16 km away, the last frost here is 3 days later than there and the growing season is 6 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 28 |
| 50% (median) | April 12 |
| 10% (safe for tender plants) | April 27 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 11 |
| 50% (median) | October 23 |
| 90% (late) | November 5 |
Frost here means 32°F (0°C). A median date means half of years have their last frost earlier and half later.
Planting calendar for Chesterfield, MO
Frost dates for 63005 — Chesterfield, MO — last frost Apr 12, first frost Oct 23, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Jan 18 to Feb 1Transplant outside: Mar 15 to Mar 29
Start indoors: Feb 1 to Feb 15Transplant outside: Apr 26 to May 10
Start indoors: Feb 1 to Feb 15Transplant outside: Apr 26 to May 10
Start indoors: Feb 15 to Mar 1Transplant outside: Apr 19 to May 3
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 22 to Apr 5Sow outdoors: Mar 15 to Apr 19Plant for fall: Aug 28 to Sep 25
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 15 to Mar 29Sow outdoors: Mar 15 to Mar 29Plant for fall: Aug 14 to Sep 4
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 22 to Apr 5Plant for fall: Jul 17 to Aug 7
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Jul 17 to Aug 7
Start indoors: Mar 1 to Mar 15Transplant outside: May 3 to May 17Sow outdoors: May 3 to May 17
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 19 to May 3
Sow outdoors: Mar 1 to Mar 22Plant for fall: Jul 31 to Aug 21
Sow outdoors: Mar 1 to Mar 22Plant for fall: Aug 28 to Sep 18
Sow outdoors: Mar 8 to Apr 19Plant for fall: Sep 11 to Oct 2
Start indoors: Mar 15 to Mar 22Transplant outside: Apr 26 to May 3Sow outdoors: Apr 19 to May 3Plant for fall: Aug 7 to Aug 21
Start indoors: Mar 15 to Mar 22Sow outdoors: Apr 19 to May 3Plant for fall: Aug 14 to Aug 28
Start indoors: Mar 15 to Mar 22Sow outdoors: Apr 19 to May 3
Start indoors: Mar 15 to Mar 22Transplant outside: Apr 26 to May 10
Sow outdoors: Mar 22 to Apr 19Plant for fall: Jul 31 to Aug 14
Sow outdoors: Mar 22 to Apr 19Plant for fall: Aug 14 to Aug 28
Sow outdoors: Mar 22 to Apr 12
Sow outdoors: Mar 29 to Apr 26Plant for fall: Aug 14 to Aug 28
Sow outdoors: Mar 29 to Apr 19Plant for fall: Aug 28 to Sep 18
Sow outdoors: Apr 19 to May 10Plant for fall: Aug 7 to Aug 21
Sow outdoors: Apr 19 to May 3
Transplant outside: Apr 26 to May 17
Plant for fall: Oct 9 to Nov 13
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Chesterfield, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 18 – Feb 1 | Mar 15 – Mar 29 | — | — |
| Peppers | Feb 1 – Feb 15 | Apr 26 – May 10 | — | — |
| Eggplant | Feb 1 – Feb 15 | Apr 26 – May 10 | — | — |
| Tomatoes | Feb 15 – Mar 1 | Apr 19 – May 3 | — | — |
| Lettuce | Feb 15 – Mar 1 | Mar 22 – Apr 5 | Mar 15 – Apr 19 | Aug 28 – Sep 25 |
| Kale | Feb 15 – Mar 1 | Mar 15 – Mar 29 | Mar 15 – Mar 29 | Aug 14 – Sep 4 |
| Broccoli | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Jul 17 – Aug 7 |
| Cabbage | Feb 15 – Mar 1 | Mar 22 – Apr 5 | — | Jul 17 – Aug 7 |
| Cauliflower | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Jul 17 – Aug 7 |
| Okra | Mar 1 – Mar 15 | May 3 – May 17 | May 3 – May 17 | — |
| Basil | Mar 1 – Mar 15 | Apr 19 – May 3 | — | — |
| Peas | — | — | Mar 1 – Mar 22 | Jul 31 – Aug 21 |
| Spinach | — | — | Mar 1 – Mar 22 | Aug 28 – Sep 18 |
| Radishes | — | — | Mar 8 – Apr 19 | Sep 11 – Oct 2 |
| Cucumbers | Mar 15 – Mar 22 | Apr 26 – May 3 | Apr 19 – May 3 | Aug 7 – Aug 21 |
| Zucchini & Summer Squash | Mar 15 – Mar 22 | — | Apr 19 – May 3 | Aug 14 – Aug 28 |
| Winter Squash & Pumpkins | Mar 15 – Mar 22 | — | Apr 19 – May 3 | — |
| Melons & Watermelon | Mar 15 – Mar 22 | Apr 26 – May 10 | — | — |
| Carrots | — | — | Mar 22 – Apr 19 | Jul 31 – Aug 14 |
| Beets | — | — | Mar 22 – Apr 19 | Aug 14 – Aug 28 |
| Potatoes | — | — | Mar 22 – Apr 12 | — |
| Swiss Chard | — | — | Mar 29 – Apr 26 | Aug 14 – Aug 28 |
| Cilantro | — | — | Mar 29 – Apr 19 | Aug 28 – Sep 18 |
| Green Beans | — | — | Apr 19 – May 10 | Aug 7 – Aug 21 |
| Sweet Corn | — | — | Apr 19 – May 3 | — |
| Sweet Potatoes | — | Apr 26 – May 17 | — | — |
| Garlic | — | — | — | Oct 9 – Nov 13 |
Dates come from the median frost dates and common extension-service timing. Adjust for your soil temperature, microclimate and the varieties you grow.
About these dates
Based on 1991–2020 NOAA climate normals for the St Louis Sprt Of S L Ap, MO weather station, 5 km away (elevation 463 ft (141 m)).
ZIP codes in Chesterfield: 63005 63006 63017
Frost dates near Chesterfield
- Glencoe Apr 12 · Oct 23
- Grover Apr 12 · Oct 23
- Ballwin Apr 4 · Oct 29
- Cottleville Apr 10 · Oct 26
- Eureka Apr 12 · Oct 23
- Valley Park Apr 4 · Oct 29
- Flinthill Apr 9 · Oct 26
- Saint Albans Apr 12 · Oct 23
Frequently asked questions
When is the last frost in Chesterfield, MO?
The median last spring frost in Chesterfield, MO is April 12. There is still about a 10% chance of frost after April 27, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Chesterfield, MO?
The median first fall frost is October 23, with about a 10% chance of frost before October 11.
How long is the growing season in Chesterfield, MO?
About 194 days between the median last spring frost and first fall frost.
What planting zone is Chesterfield, MO?
Chesterfield, MO is in USDA hardiness zone 6b.