Buffalo, IN frost dates
Last spring frostApr 26median date
First fall frostOct 17median date
Growing season174 daysfrost-free
Hardiness zone5bZone 5b
How Buffalo compares
- In 8 years out of 10, the last spring frost in Buffalo falls between April 12 and May 12, a 30-day window. The first fall frost falls between October 2 and October 30.
- The median last frost is 4 days later than the Indiana median of Apr 22.
- Its 174-day growing season is longer than 19% of the 733 Indiana places with a regular frost season (state median 182 days).
- The last frost is 5 days earlier than the zone 5b median of May 1. Hardiness zones measure winter cold, not season length, so use these dates rather than a zone 5b chart.
- The weather station records an average of 134 nights a year at or below 32°F.
- Compared with Lafayette, IN, 57 km away, the last frost here is the same as there and the growing season is 1 day shorter.
Frost probability
| Chance of frost after | Date |
|---|---|
| 90% (early) | April 12 |
| 50% (median) | April 26 |
| 10% (safe for tender plants) | May 12 |
| Chance of frost before | Date |
|---|---|
| 10% (early) | October 2 |
| 50% (median) | October 17 |
| 90% (late) | October 30 |
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 Buffalo, IN
Buffalo, IN frost dates — last frost Apr 26, first frost Oct 17, zone 5b. whenisthelastfrost.com
Crop
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Start indoors: Feb 1 to Feb 15Transplant outside: Mar 29 to Apr 12
Start indoors: Feb 15 to Mar 1Transplant outside: May 10 to May 24
Start indoors: Feb 15 to Mar 1Transplant outside: May 10 to May 24
Start indoors: Mar 1 to Mar 15Transplant outside: May 3 to May 17
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 5 to Apr 19Sow outdoors: Mar 29 to May 3Plant for fall: Aug 22 to Sep 19
Start indoors: Mar 1 to Mar 15Transplant outside: Mar 29 to Apr 12Sow outdoors: Mar 29 to Apr 12Plant for fall: Aug 8 to Aug 29
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 12 to Apr 26Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 5 to Apr 19Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 1 to Mar 15Transplant outside: Apr 12 to Apr 26Plant for fall: Jul 11 to Aug 1
Start indoors: Mar 15 to Mar 29Transplant outside: May 17 to May 31Sow outdoors: May 17 to May 31
Start indoors: Mar 15 to Mar 29Transplant outside: May 3 to May 17
Sow outdoors: Mar 15 to Apr 5Plant for fall: Jul 25 to Aug 15
Sow outdoors: Mar 15 to Apr 5Plant for fall: Aug 22 to Sep 12
Sow outdoors: Mar 22 to May 3Plant for fall: Sep 5 to Sep 26
Start indoors: Mar 29 to Apr 5Transplant outside: May 10 to May 17Sow outdoors: May 3 to May 17Plant for fall: Aug 1 to Aug 15
Start indoors: Mar 29 to Apr 5Sow outdoors: May 3 to May 17Plant for fall: Aug 8 to Aug 22
Start indoors: Mar 29 to Apr 5Sow outdoors: May 3 to May 17
Start indoors: Mar 29 to Apr 5Transplant outside: May 10 to May 24
Sow outdoors: Apr 5 to May 3Plant for fall: Jul 25 to Aug 8
Sow outdoors: Apr 5 to May 3Plant for fall: Aug 8 to Aug 22
Sow outdoors: Apr 5 to Apr 26
Sow outdoors: Apr 12 to May 10Plant for fall: Aug 8 to Aug 22
Sow outdoors: Apr 12 to May 3Plant for fall: Aug 22 to Sep 12
Sow outdoors: May 3 to May 24Plant for fall: Aug 1 to Aug 15
Sow outdoors: May 3 to May 17
Transplant outside: May 10 to May 31
Plant for fall: Oct 3 to Nov 7
Start indoorsTransplant outsideSow outdoorsPlant for fallMedian frost dates
When to plant vegetables in Buffalo, IN
| Crop | Start indoors | Transplant | Sow outdoors | Fall crop |
|---|---|---|---|---|
| Onions | Feb 1 – Feb 15 | Mar 29 – Apr 12 | — | — |
| Peppers | Feb 15 – Mar 1 | May 10 – May 24 | — | — |
| Eggplant | Feb 15 – Mar 1 | May 10 – May 24 | — | — |
| Tomatoes | Mar 1 – Mar 15 | May 3 – May 17 | — | — |
| Lettuce | Mar 1 – Mar 15 | Apr 5 – Apr 19 | Mar 29 – May 3 | Aug 22 – Sep 19 |
| Kale | Mar 1 – Mar 15 | Mar 29 – Apr 12 | Mar 29 – Apr 12 | Aug 8 – Aug 29 |
| Broccoli | Mar 1 – Mar 15 | Apr 12 – Apr 26 | — | Jul 11 – Aug 1 |
| Cabbage | Mar 1 – Mar 15 | Apr 5 – Apr 19 | — | Jul 11 – Aug 1 |
| Cauliflower | Mar 1 – Mar 15 | Apr 12 – Apr 26 | — | Jul 11 – Aug 1 |
| Okra | Mar 15 – Mar 29 | May 17 – May 31 | May 17 – May 31 | — |
| Basil | Mar 15 – Mar 29 | May 3 – May 17 | — | — |
| Peas | — | — | Mar 15 – Apr 5 | Jul 25 – Aug 15 |
| Spinach | — | — | Mar 15 – Apr 5 | Aug 22 – Sep 12 |
| Radishes | — | — | Mar 22 – May 3 | Sep 5 – Sep 26 |
| Cucumbers | Mar 29 – Apr 5 | May 10 – May 17 | May 3 – May 17 | Aug 1 – Aug 15 |
| Zucchini & Summer Squash | Mar 29 – Apr 5 | — | May 3 – May 17 | Aug 8 – Aug 22 |
| Winter Squash & Pumpkins | Mar 29 – Apr 5 | — | May 3 – May 17 | — |
| Melons & Watermelon | Mar 29 – Apr 5 | May 10 – May 24 | — | — |
| Carrots | — | — | Apr 5 – May 3 | Jul 25 – Aug 8 |
| Beets | — | — | Apr 5 – May 3 | Aug 8 – Aug 22 |
| Potatoes | — | — | Apr 5 – Apr 26 | — |
| Swiss Chard | — | — | Apr 12 – May 10 | Aug 8 – Aug 22 |
| Cilantro | — | — | Apr 12 – May 3 | Aug 22 – Sep 12 |
| Green Beans | — | — | May 3 – May 24 | Aug 1 – Aug 15 |
| Sweet Corn | — | — | May 3 – May 17 | — |
| Sweet Potatoes | — | May 10 – May 31 | — | — |
| Garlic | — | — | — | Oct 3 – Nov 7 |
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 Francesville, IN weather station, 16 km away (elevation 679 ft (207 m)).
Frost dates near Buffalo
- Monon Apr 26 · Oct 17
- Monticello Apr 22 · Oct 17
- Francesville Apr 26 · Oct 17
- Idaville Apr 22 · Oct 17
- Reynolds Apr 25 · Oct 17
- Burnettsville Apr 22 · Oct 17
- Star City Apr 25 · Oct 18
- Royal Center Apr 20 · Oct 23
- Winamac Apr 25 · Oct 18
- Yeoman Apr 22 · Oct 17
Frequently asked questions
When is the last frost in Buffalo, IN?
The median last spring frost in Buffalo, IN is April 26. There is still about a 10% chance of frost after May 12, so wait until then to plant frost-tender crops like tomatoes and peppers.
When is the first frost in Buffalo, IN?
The median first fall frost is October 17, with about a 10% chance of frost before October 2.
How long is the growing season in Buffalo, IN?
About 174 days between the median last spring frost and first fall frost.
What planting zone is Buffalo, IN?
Buffalo, IN is in USDA hardiness zone 5b.