Frost dates for Greensburg, IN
At Greensburg, the median last spring frost (32°F) is Apr 15 and the median first fall frost is Oct 26, for a typical growing season of 194 days. For a 90% chance that the last frost has passed, wait until May 2. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- Apr 15Last spring frost (median)50% chance of 32°F after this date
- May 2Safer planting date10% chance of 32°F after this date
- Oct 26First fall frost (median)50% chance of 32°F by this date
- 194 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Apr 10 | Apr 26 | May 12 |
| 32°F | Mar 31 | Apr 15 | May 2 |
| 28°F | Mar 20 | Apr 2 | Apr 19 |
| 24°F | Mar 7 | Mar 23 | Apr 6 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 1 | Oct 16 | Oct 28 |
| 32°F | Oct 12 | Oct 26 | Nov 7 |
| 28°F | Oct 23 | Nov 5 | Nov 21 |
| 24°F | Nov 2 | Nov 16 | Dec 6 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 151 days | 172 days | 191 days |
| 32°F | 172 days | 194 days | 212 days |
| 28°F | 195 days | 216 days | 238 days |
| 24°F | 218 days | 239 days | 266 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 47240 | 6b | -5 to 0°F | 5 km |
| 47272 | 6b | -5 to 0°F | 13 km |
| 47263 | 6b | -5 to 0°F | 14 km |
| 47225 | 6a | -10 to -5°F | 16 km |
| 47034 | 6b | -5 to 0°F | 21 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USC00123547, at 39.3475, -85.4892, elevation 286 m (937 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 109.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Rushville (29 km)
- Shelbyville Sewage Plant (33 km)
- Shelbyville Muni Airport (37 km)
- N Vernon 2 ESE (40 km)
- Brookville (42 km)
- Columbus (42 km)
- Milan 5 NE (43 km)
- Franklin Wastewater Plant (49 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.