Frost dates for Attica 2e, IN
At Attica 2e, the median last spring frost (32°F) is Apr 22 and the median first fall frost is Oct 17, for a typical growing season of 176 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 22Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 17First fall frost (median)50% chance of 32°F by this date
- 176 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 19 | May 3 | May 20 |
| 32°F | Apr 8 | Apr 22 | May 8 |
| 28°F | Mar 30 | Apr 11 | Apr 27 |
| 24°F | Mar 14 | Apr 1 | Apr 17 |
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 23 | Oct 6 | Oct 19 |
| 32°F | Oct 1 | Oct 17 | Oct 30 |
| 28°F | Oct 15 | Oct 28 | Nov 10 |
| 24°F | Oct 25 | Nov 7 | Nov 23 |
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 | 137 days | 156 days | 173 days |
| 32°F | 156 days | 176 days | 193 days |
| 28°F | 177 days | 198 days | 217 days |
| 24°F | 199 days | 219 days | 240 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 |
|---|---|---|---|
| 47918 | 6a | -10 to -5°F | 2 km |
| 47969 | 6a | -10 to -5°F | 10 km |
| 47958 | 6a | -10 to -5°F | 14 km |
| 47994 | 6a | -10 to -5°F | 15 km |
| 47987 | 6a | -10 to -5°F | 18 km |
| 47975 | 6a | -10 to -5°F | 18 km |
| 47993 | 6a | -10 to -5°F | 19 km |
| 47991 | 6a | -10 to -5°F | 21 km |
| 47949 | 6a | -10 to -5°F | 25 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 USC00120331, at 40.2839, -87.1964, elevation 222 m (727 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 129.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lafayette 8 S (25 km)
- Lafayette Purdue Univ Airport (26 km)
- W Lafayette 6 NW (27 km)
- Perrysville 4 WNW (35 km)
- Boswell 4wnw (35 km)
- Crawfordsville 6 SE (46 km)
- Chalmers 5 W (47 km)
- Kentland (57 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.