Clayton, IN frost dates
Last spring frostApr 12median date
First fall frostOct 27median date
Growing season198 daysfrost-free
Hardiness zone6aZone 6a
How Clayton compares
- In 8 years out of 10, the last spring frost in Clayton falls between March 31 and April 28, a 28-day window. The first fall frost falls between October 14 and November 7.
- The median last frost is 10 days earlier than the Indiana median of Apr 22.
- Its 198-day growing season is longer than 85% of the 733 Indiana places with a regular frost season (state median 182 days).
- The last frost is 17 days earlier than the zone 6a median of Apr 29. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 6a chart.
- The weather station records an average of 108 nights a year at or below 32°F.
- Compared with Greenwood, IN, 31 km away, the last frost here is 8 days earlier than there and the growing season is 14 days longer.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | March 31 |
| 50% (median) | April 12 |
| 10% (safe for tender plants) | April 28 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 14 |
| 50% (median) | October 27 |
| 90% (late) | November 7 |
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 Clayton, IN
Clayton, IN frost dates — last frost Apr 12, first frost Oct 27, zone 6a. 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: Sep 1 to Sep 29
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 15 to Mar 29Sow outdoors: Mar 15 to Mar 29Plant for fall: Aug 18 to Sep 8
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Jul 21 to Aug 11
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 22 to Apr 5Plant for fall: Jul 21 to Aug 11
Start indoors: Feb 15 to Mar 1Transplant outside: Mar 29 to Apr 12Plant for fall: Jul 21 to Aug 11
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: Aug 4 to Aug 25
Sow outdoors: Mar 1 to Mar 22Plant for fall: Sep 1 to Sep 22
Sow outdoors: Mar 8 to Apr 19Plant for fall: Sep 15 to Oct 6
Start indoors: Mar 15 to Mar 22Transplant outside: Apr 26 to May 3Sow outdoors: Apr 19 to May 3Plant for fall: Aug 11 to Aug 25
Start indoors: Mar 15 to Mar 22Sow outdoors: Apr 19 to May 3Plant for fall: Aug 18 to Sep 1
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: Aug 4 to Aug 18
Sow outdoors: Mar 22 to Apr 19Plant for fall: Aug 18 to Sep 1
Sow outdoors: Mar 22 to Apr 12
Sow outdoors: Mar 29 to Apr 26Plant for fall: Aug 18 to Sep 1
Sow outdoors: Mar 29 to Apr 19Plant for fall: Sep 1 to Sep 22
Sow outdoors: Apr 19 to May 10Plant for fall: Aug 11 to Aug 25
Sow outdoors: Apr 19 to May 3
Transplant outside: Apr 26 to May 17
Plant for fall: Oct 13 to Nov 17
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Clayton, IN
| 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 | Sep 1 – Sep 29 |
| Kale | Feb 15 – Mar 1 | Mar 15 – Mar 29 | Mar 15 – Mar 29 | Aug 18 – Sep 8 |
| Broccoli | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Jul 21 – Aug 11 |
| Cabbage | Feb 15 – Mar 1 | Mar 22 – Apr 5 | — | Jul 21 – Aug 11 |
| Cauliflower | Feb 15 – Mar 1 | Mar 29 – Apr 12 | — | Jul 21 – Aug 11 |
| 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 | Aug 4 – Aug 25 |
| Spinach | — | — | Mar 1 – Mar 22 | Sep 1 – Sep 22 |
| Radishes | — | — | Mar 8 – Apr 19 | Sep 15 – Oct 6 |
| Cucumbers | Mar 15 – Mar 22 | Apr 26 – May 3 | Apr 19 – May 3 | Aug 11 – Aug 25 |
| Zucchini & Summer Squash | Mar 15 – Mar 22 | — | Apr 19 – May 3 | Aug 18 – Sep 1 |
| 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 | Aug 4 – Aug 18 |
| Beets | — | — | Mar 22 – Apr 19 | Aug 18 – Sep 1 |
| Potatoes | — | — | Mar 22 – Apr 12 | — |
| Swiss Chard | — | — | Mar 29 – Apr 26 | Aug 18 – Sep 1 |
| Cilantro | — | — | Mar 29 – Apr 19 | Sep 1 – Sep 22 |
| Green Beans | — | — | Apr 19 – May 10 | Aug 11 – Aug 25 |
| Sweet Corn | — | — | Apr 19 – May 3 | — |
| Sweet Potatoes | — | Apr 26 – May 17 | — | — |
| Garlic | — | — | — | Oct 13 – Nov 17 |
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 Indianapolis Nwfo, IN weather station, 19 km away (elevation 791 ft (241 m)).
Frost dates near Clayton
- Plainfield Apr 12 · Oct 27
- Amo Apr 27 · Oct 15
- Monrovia Apr 24 · Oct 15
- Stilesville Apr 27 · Oct 15
- Danville Apr 23 · Oct 19
- Avon Apr 12 · Oct 29
- Mooresville Apr 12 · Oct 27
- Coatesville Apr 27 · Oct 15
- Camby Apr 12 · Oct 27
- Brooklyn Apr 24 · Oct 15
Frequently asked questions
When is the last frost in Clayton, IN?
The median last spring frost in Clayton, IN is April 12. There is still about a 10% chance of frost after April 28, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Clayton, IN?
The median first fall frost is October 27, with about a 10% chance of frost before October 14.
How long is the growing season in Clayton, IN?
About 198 days between the median last spring frost and first fall frost.
What planting zone is Clayton, IN?
Clayton, IN is in USDA hardiness zone 6a.