Clarksville, MO frost dates
Last spring frostApr 4median date
First fall frostNov 1median date
Growing season211 daysfrost-free
Hardiness zone6bZone 6b
How Clarksville compares
- In 8 years out of 10, the last spring frost in Clarksville falls between March 20 and April 23, a 34-day window. The first fall frost falls between October 19 and November 15.
- The median last frost is 8 days earlier than the Missouri median of Apr 12.
- Its 211-day growing season is longer than 90% of the 938 Missouri places with a regular frost season (state median 195 days).
- The last frost is 18 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 108 nights a year at or below 32°F.
- Compared with O Fallon, MO, 64 km away, the last frost here is 6 days earlier than there and the growing season is 12 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 20 |
| 50% (median) | April 4 |
| 10% (safe for tender plants) | April 23 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 19 |
| 50% (median) | November 1 |
| 90% (late) | November 15 |
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 Clarksville, MO
Clarksville, MO frost dates — last frost Apr 4, first frost Nov 1, zone 6b. whenisthelastfrost.com
Crop
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Start indoors: Jan 10 to Jan 24Transplant outside: Mar 7 to Mar 21
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Jan 24 to Feb 7Transplant outside: Apr 18 to May 2
Start indoors: Feb 7 to Feb 21Transplant outside: Apr 11 to Apr 25
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Sow outdoors: Mar 7 to Apr 11Plant for fall: Sep 6 to Oct 4
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 7 to Mar 21Sow outdoors: Mar 7 to Mar 21Plant for fall: Aug 23 to Sep 13
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 14 to Mar 28Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 7 to Feb 21Transplant outside: Mar 21 to Apr 4Plant for fall: Jul 26 to Aug 16
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 25 to May 9Sow outdoors: Apr 25 to May 9
Start indoors: Feb 21 to Mar 7Transplant outside: Apr 11 to Apr 25
Sow outdoors: Feb 21 to Mar 14Plant for fall: Aug 9 to Aug 30
Sow outdoors: Feb 21 to Mar 14Plant for fall: Sep 6 to Sep 27
Sow outdoors: Feb 28 to Apr 11Plant for fall: Sep 20 to Oct 11
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to Apr 25Sow outdoors: Apr 11 to Apr 25Plant for fall: Aug 16 to Aug 30
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25Plant for fall: Aug 23 to Sep 6
Start indoors: Mar 7 to Mar 14Sow outdoors: Apr 11 to Apr 25
Start indoors: Mar 7 to Mar 14Transplant outside: Apr 18 to May 2
Sow outdoors: Mar 14 to Apr 11Plant for fall: Aug 9 to Aug 23
Sow outdoors: Mar 14 to Apr 11Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 14 to Apr 4
Sow outdoors: Mar 21 to Apr 18Plant for fall: Aug 23 to Sep 6
Sow outdoors: Mar 21 to Apr 11Plant for fall: Sep 6 to Sep 27
Sow outdoors: Apr 11 to May 2Plant for fall: Aug 16 to Aug 30
Sow outdoors: Apr 11 to Apr 25
Transplant outside: Apr 18 to May 9
Plant for fall: Oct 18 to Nov 22
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Clarksville, MO
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Jan 10 – Jan 24 | Mar 7 – Mar 21 | — | — |
| Peppers | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Eggplant | Jan 24 – Feb 7 | Apr 18 – May 2 | — | — |
| Tomatoes | Feb 7 – Feb 21 | Apr 11 – Apr 25 | — | — |
| Lettuce | Feb 7 – Feb 21 | Mar 14 – Mar 28 | Mar 7 – Apr 11 | Sep 6 – Oct 4 |
| Kale | Feb 7 – Feb 21 | Mar 7 – Mar 21 | Mar 7 – Mar 21 | Aug 23 – Sep 13 |
| Broccoli | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Jul 26 – Aug 16 |
| Cabbage | Feb 7 – Feb 21 | Mar 14 – Mar 28 | — | Jul 26 – Aug 16 |
| Cauliflower | Feb 7 – Feb 21 | Mar 21 – Apr 4 | — | Jul 26 – Aug 16 |
| Okra | Feb 21 – Mar 7 | Apr 25 – May 9 | Apr 25 – May 9 | — |
| Basil | Feb 21 – Mar 7 | Apr 11 – Apr 25 | — | — |
| Peas | — | — | Feb 21 – Mar 14 | Aug 9 – Aug 30 |
| Spinach | — | — | Feb 21 – Mar 14 | Sep 6 – Sep 27 |
| Radishes | — | — | Feb 28 – Apr 11 | Sep 20 – Oct 11 |
| Cucumbers | Mar 7 – Mar 14 | Apr 18 – Apr 25 | Apr 11 – Apr 25 | Aug 16 – Aug 30 |
| Zucchini & Summer Squash | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | Aug 23 – Sep 6 |
| Winter Squash & Pumpkins | Mar 7 – Mar 14 | — | Apr 11 – Apr 25 | — |
| Melons & Watermelon | Mar 7 – Mar 14 | Apr 18 – May 2 | — | — |
| Carrots | — | — | Mar 14 – Apr 11 | Aug 9 – Aug 23 |
| Beets | — | — | Mar 14 – Apr 11 | Aug 23 – Sep 6 |
| Potatoes | — | — | Mar 14 – Apr 4 | — |
| Swiss Chard | — | — | Mar 21 – Apr 18 | Aug 23 – Sep 6 |
| Cilantro | — | — | Mar 21 – Apr 11 | Sep 6 – Sep 27 |
| Green Beans | — | — | Apr 11 – May 2 | Aug 16 – Aug 30 |
| Sweet Corn | — | — | Apr 11 – Apr 25 | — |
| Sweet Potatoes | — | Apr 18 – May 9 | — | — |
| Garlic | — | — | — | Oct 18 – Nov 22 |
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 Clarksville L&D, MO weather station, 4 km away (elevation 459 ft (140 m)).
Frost dates near Clarksville
- Eolia Apr 4 · Nov 1
- Annada Apr 20 · Oct 20
- Louisiana Apr 13 · Oct 23
- Whiteside Apr 20 · Oct 20
- Bowling Green Apr 13 · Oct 23
- Elsberry Apr 20 · Oct 20
- Silex Apr 20 · Oct 20
- Ashburn Apr 4 · Nov 4
- Frankford Apr 4 · Nov 4
- Foley Apr 20 · Oct 20
Frequently asked questions
When is the last frost in Clarksville, MO?
The median last spring frost in Clarksville, MO is April 4. There is still about a 10% chance of frost after April 23, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Clarksville, MO?
The median first fall frost is November 1, with about a 10% chance of frost before October 19.
How long is the growing season in Clarksville, MO?
About 211 days between the median last spring frost and first fall frost.
What planting zone is Clarksville, MO?
Clarksville, MO is in USDA hardiness zone 6b.