Frost dates for Madison Sewage Plant, IN
At Madison Sewage Plant, the median last spring frost (32°F) is Apr 11 and the median first fall frost is Oct 31, for a typical growing season of 201 days. For a 90% chance that the last frost has passed, wait until Apr 28. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 11Last spring frost (median)50% chance of 32°F after this date
- Apr 28Safer planting date10% chance of 32°F after this date
- Oct 31First fall frost (median)50% chance of 32°F by this date
- 201 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 9 | Apr 22 | May 8 |
| 32°F | Mar 28 | Apr 11 | Apr 28 |
| 28°F | Mar 16 | Mar 31 | Apr 16 |
| 24°F | Mar 1 | Mar 20 | Apr 7 |
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 6 | Oct 21 | Nov 1 |
| 32°F | Oct 15 | Oct 31 | Nov 14 |
| 28°F | Oct 29 | Nov 10 | Nov 29 |
| 24°F | Nov 4 | Nov 21 | Dec 12 |
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 | 160 days | 179 days | 198 days |
| 32°F | 179 days | 201 days | 221 days |
| 28°F | 201 days | 223 days | 247 days |
| 24°F | 222 days | 247 days | 272 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 |
|---|---|---|---|
| 40045 | 6b | -5 to 0°F | 6 km |
| 47250 | 6b | -5 to 0°F | 9 km |
| 47243 | 6b | -5 to 0°F | 11 km |
| 40006 | 6b | -5 to 0°F | 17 km |
| 47147 | 6b | -5 to 0°F | 20 km |
| 47104 | 7a | 0 to 5°F | 20 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 USC00125237, at 38.7369, -85.3942, elevation 140 m (460 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 96.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Vevay (28 km)
- Scottsburg (34 km)
- N Vernon 2 ESE (34 km)
- Seymour 2 N (52 km)
- Milan 5 NE (56 km)
- Salem (62 km)
- Columbus (66 km)
- Greensburg (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.