Frost dates for Perrysville 4 WNW, IN
At Perrysville 4 WNW, the median last spring frost (32°F) is Apr 23 and the median first fall frost is Oct 14, for a typical growing season of 171 days. For a 90% chance that the last frost has passed, wait until May 7. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 23Last spring frost (median)50% chance of 32°F after this date
- May 7Safer planting date10% chance of 32°F after this date
- Oct 14First fall frost (median)50% chance of 32°F by this date
- 171 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 20 | May 2 | May 18 |
| 32°F | Apr 10 | Apr 23 | May 7 |
| 28°F | Mar 31 | Apr 13 | Apr 27 |
| 24°F | Mar 17 | Apr 3 | 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 21 | Oct 3 | Oct 16 |
| 32°F | Sep 29 | Oct 14 | Oct 27 |
| 28°F | Oct 8 | Oct 24 | Nov 6 |
| 24°F | Oct 20 | Nov 4 | Nov 22 |
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 | 134 days | 153 days | 171 days |
| 32°F | 150 days | 171 days | 191 days |
| 28°F | 172 days | 192 days | 212 days |
| 24°F | 193 days | 215 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 |
|---|---|---|---|
| 47974 | 6a | -10 to -5°F | 4 km |
| 47932 | 6a | -10 to -5°F | 10 km |
| 61846 | 6a | -10 to -5°F | 14 km |
| 47928 | 6a | -10 to -5°F | 17 km |
| 47952 | 6a | -10 to -5°F | 22 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 USC00126830, at 40.0739, -87.5067, elevation 186 m (611 ft).
- Data quality: Standard (24+ years of data), 30 years of freeze data.
- Average days per year at or below 32°F: 124.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Attica 2e (35 km)
- Rockville (42 km)
- Boswell 4wnw (51 km)
- Lafayette 8 S (57 km)
- Crawfordsville 6 SE (61 km)
- Lafayette Purdue Univ Airport (61 km)
- W Lafayette 6 NW (62 km)
- Terre Haute Indiana State (68 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.