Frost dates for Carmel 3 E, IN
At Carmel 3 E, the median last spring frost (32°F) is Apr 21 and the median first fall frost is Oct 21, for a typical growing season of 183 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 21Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 21First fall frost (median)50% chance of 32°F by this date
- 183 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 17 | May 2 | May 16 |
| 32°F | Apr 5 | Apr 21 | May 8 |
| 28°F | Mar 25 | Apr 8 | Apr 26 |
| 24°F | Mar 12 | Mar 29 | Apr 12 |
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 | Sep 28 | Oct 11 | Oct 24 |
| 32°F | Oct 6 | Oct 21 | Nov 2 |
| 28°F | Oct 18 | Nov 1 | Nov 17 |
| 24°F | Nov 1 | Nov 13 | Dec 1 |
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 | 143 days | 162 days | 181 days |
| 32°F | 160 days | 183 days | 204 days |
| 28°F | 184 days | 206 days | 227 days |
| 24°F | 210 days | 230 days | 253 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 |
|---|---|---|---|
| 46033 | 6a | -10 to -5°F | 3 km |
| 46038 | 6a | -10 to -5°F | 4 km |
| 46280 | 6a | -10 to -5°F | 7 km |
| 46290 | 6a | -10 to -5°F | 9 km |
| 46037 | 6a | -10 to -5°F | 10 km |
| 46032 | 6a | -10 to -5°F | 10 km |
| 46062 | 6a | -10 to -5°F | 11 km |
| 46074 | 6a | -10 to -5°F | 13 km |
| 46060 | 6a | -10 to -5°F | 15 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 USC00121303, at 39.9617, -86.0586, elevation 229 m (752 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 122.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Castleton 2 S (9 km)
- Indianapolis Eagle Creek Airport (25 km)
- Whitestown (25 km)
- Indianapolis SE Side (27 km)
- Tipton 5 SW (29 km)
- Greenfield (32 km)
- Anderson Sewage Plant (34 km)
- Indianapolis (34 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.