Auburn, IN frost dates
Last spring frostMay 2median date
First fall frostOct 10median date
Growing season161 daysfrost-free
Hardiness zone6aZone 6a
How Auburn compares
- In 8 years out of 10, the last spring frost in Auburn falls between April 19 and May 16, a 27-day window. The first fall frost falls between September 26 and October 24.
- The median last frost is 10 days later than the Indiana median of Apr 22.
- Its 161-day growing season is among the shortest of the 733 Indiana places with a regular frost season.
- The last frost is typical for zone 6a, where the median is Apr 29.
- The weather station records an average of 129 nights a year at or below 32°F.
- Compared with Fort Wayne, IN, 30 km away, the last frost here is 8 days later than there and the growing season is 19 days shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 19 |
| 50% (median) | May 2 |
| 10% (safe for tender plants) | May 16 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | September 26 |
| 50% (median) | October 10 |
| 90% (late) | October 24 |
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 Auburn, IN
Auburn, IN frost dates — last frost May 2, first frost Oct 10, zone 6a. whenisthelastfrost.com
Crop
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Start indoors: Feb 7 to Feb 21Transplant outside: Apr 4 to Apr 18
Start indoors: Feb 21 to Mar 7Transplant outside: May 16 to May 30
Start indoors: Feb 21 to Mar 7Transplant outside: May 16 to May 30
Start indoors: Mar 7 to Mar 21Transplant outside: May 9 to May 23
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 11 to Apr 25Sow outdoors: Apr 4 to May 9Plant for fall: Aug 15 to Sep 12
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 4 to Apr 18Sow outdoors: Apr 4 to Apr 18Plant for fall: Aug 1 to Aug 22
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 18 to May 2Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 11 to Apr 25Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 7 to Mar 21Transplant outside: Apr 18 to May 2Plant for fall: Jul 4 to Jul 25
Start indoors: Mar 21 to Apr 4Transplant outside: May 23 to Jun 6Sow outdoors: May 23 to Jun 6
Start indoors: Mar 21 to Apr 4Transplant outside: May 9 to May 23
Sow outdoors: Mar 21 to Apr 11Plant for fall: Jul 18 to Aug 8
Sow outdoors: Mar 21 to Apr 11Plant for fall: Aug 15 to Sep 5
Sow outdoors: Mar 28 to May 9Plant for fall: Aug 29 to Sep 19
Start indoors: Apr 4 to Apr 11Transplant outside: May 16 to May 23Sow outdoors: May 9 to May 23Plant for fall: Jul 25 to Aug 8
Start indoors: Apr 4 to Apr 11Sow outdoors: May 9 to May 23Plant for fall: Aug 1 to Aug 15
Start indoors: Apr 4 to Apr 11Sow outdoors: May 9 to May 23
Start indoors: Apr 4 to Apr 11Transplant outside: May 16 to May 30
Sow outdoors: Apr 11 to May 9Plant for fall: Jul 18 to Aug 1
Sow outdoors: Apr 11 to May 9Plant for fall: Aug 1 to Aug 15
Sow outdoors: Apr 11 to May 2
Sow outdoors: Apr 18 to May 16Plant for fall: Aug 1 to Aug 15
Sow outdoors: Apr 18 to May 9Plant for fall: Aug 15 to Sep 5
Sow outdoors: May 9 to May 30Plant for fall: Jul 25 to Aug 8
Sow outdoors: May 9 to May 23
Transplant outside: May 16 to Jun 6
Plant for fall: Sep 26 to Oct 31
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Auburn, IN
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 7 – Feb 21 | Apr 4 – Apr 18 | — | — |
| Peppers | Feb 21 – Mar 7 | May 16 – May 30 | — | — |
| Eggplant | Feb 21 – Mar 7 | May 16 – May 30 | — | — |
| Tomatoes | Mar 7 – Mar 21 | May 9 – May 23 | — | — |
| Lettuce | Mar 7 – Mar 21 | Apr 11 – Apr 25 | Apr 4 – May 9 | Aug 15 – Sep 12 |
| Kale | Mar 7 – Mar 21 | Apr 4 – Apr 18 | Apr 4 – Apr 18 | Aug 1 – Aug 22 |
| Broccoli | Mar 7 – Mar 21 | Apr 18 – May 2 | — | Jul 4 – Jul 25 |
| Cabbage | Mar 7 – Mar 21 | Apr 11 – Apr 25 | — | Jul 4 – Jul 25 |
| Cauliflower | Mar 7 – Mar 21 | Apr 18 – May 2 | — | Jul 4 – Jul 25 |
| Okra | Mar 21 – Apr 4 | May 23 – Jun 6 | May 23 – Jun 6 | — |
| Basil | Mar 21 – Apr 4 | May 9 – May 23 | — | — |
| Peas | — | — | Mar 21 – Apr 11 | Jul 18 – Aug 8 |
| Spinach | — | — | Mar 21 – Apr 11 | Aug 15 – Sep 5 |
| Radishes | — | — | Mar 28 – May 9 | Aug 29 – Sep 19 |
| Cucumbers | Apr 4 – Apr 11 | May 16 – May 23 | May 9 – May 23 | Jul 25 – Aug 8 |
| Zucchini & Summer Squash | Apr 4 – Apr 11 | — | May 9 – May 23 | Aug 1 – Aug 15 |
| Winter Squash & Pumpkins | Apr 4 – Apr 11 | — | May 9 – May 23 | — |
| Melons & Watermelon | Apr 4 – Apr 11 | May 16 – May 30 | — | — |
| Carrots | — | — | Apr 11 – May 9 | Jul 18 – Aug 1 |
| Beets | — | — | Apr 11 – May 9 | Aug 1 – Aug 15 |
| Potatoes | — | — | Apr 11 – May 2 | — |
| Swiss Chard | — | — | Apr 18 – May 16 | Aug 1 – Aug 15 |
| Cilantro | — | — | Apr 18 – May 9 | Aug 15 – Sep 5 |
| Green Beans | — | — | May 9 – May 30 | Jul 25 – Aug 8 |
| Sweet Corn | — | — | May 9 – May 23 | — |
| Sweet Potatoes | — | May 16 – Jun 6 | — | — |
| Garlic | — | — | — | Sep 26 – Oct 31 |
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 Garrett 1 S, IN weather station, 7 km away (elevation 869 ft (265 m)).
Frost dates near Auburn
- Garrett Apr 29 · Oct 17
- Waterloo May 2 · Oct 10
- Saint Joe Apr 28 · Oct 17
- Corunna Apr 29 · Oct 17
- Spencerville Apr 27 · Oct 19
- Laotto Apr 29 · Oct 17
- Leo May 2 · Oct 10
- Butler Apr 28 · Oct 17
- Avilla Apr 29 · Oct 17
- Huntertown May 2 · Oct 10
Frequently asked questions
When is the last frost in Auburn, IN?
The median last spring frost in Auburn, IN is May 2. There is still about a 10% chance of frost after May 16, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Auburn, IN?
The median first fall frost is October 10, with about a 10% chance of frost before September 26.
How long is the growing season in Auburn, IN?
About 161 days between the median last spring frost and first fall frost.
What planting zone is Auburn, IN?
Auburn, IN is in USDA hardiness zone 6a.