Frost dates for Elnora, IN
At Elnora, the median last spring frost (32°F) is Apr 9 and the median first fall frost is Oct 25, for a typical growing season of 197 days. For a 90% chance that the last frost has passed, wait until Apr 25. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 9Last spring frost (median)50% chance of 32°F after this date
- Apr 25Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 197 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 6 | Apr 21 | May 6 |
| 32°F | Mar 27 | Apr 9 | Apr 25 |
| 28°F | Mar 13 | Mar 31 | Apr 15 |
| 24°F | Mar 1 | Mar 18 | Apr 3 |
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 15 | Oct 28 |
| 32°F | Oct 12 | Oct 25 | Nov 7 |
| 28°F | Oct 22 | Nov 4 | Nov 22 |
| 24°F | Nov 1 | Nov 17 | Dec 4 |
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 | 156 days | 175 days | 196 days |
| 32°F | 177 days | 197 days | 218 days |
| 28°F | 197 days | 219 days | 241 days |
| 24°F | 219 days | 242 days | 267 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 |
|---|---|---|---|
| 47529 | 6b | -5 to 0°F | 2 km |
| 47578 | 6b | -5 to 0°F | 9 km |
| 47443 | 6b | -5 to 0°F | 11 km |
| 47562 | 6b | -5 to 0°F | 11 km |
| 47449 | 6b | -5 to 0°F | 12 km |
| 47568 | 6b | -5 to 0°F | 12 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 USC00122620, at 38.8700, -87.0917, elevation 146 m (480 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 97.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Freelandville (19 km)
- Crane Nsa (22 km)
- Washington 1 W (26 km)
- Shakamak State Park (35 km)
- Vincennes 5 NE (37 km)
- Shoals 8 S (44 km)
- Bedford 5 WNW (45 km)
- Oolitic Purdue Ex Fm (47 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.