Frost dates for Muncie Delaware Co Airport, IN
At Muncie Delaware Co Airport, the median last spring frost (32°F) is Apr 16 and the median first fall frost is Oct 25, for a typical growing season of 190 days. For a 90% chance that the last frost has passed, wait until May 2. Nearby ZIP codes are in USDA hardiness zone 6a.
- Apr 16Last spring frost (median)50% chance of 32°F after this date
- May 2Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 190 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 14 | Apr 28 | May 14 |
| 32°F | Apr 1 | Apr 16 | May 2 |
| 28°F | Mar 19 | Apr 3 | Apr 19 |
| 24°F | Mar 7 | Mar 25 | Apr 8 |
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 12 | Oct 27 |
| 32°F | Oct 9 | Oct 25 | Nov 6 |
| 28°F | Oct 22 | Nov 5 | Nov 23 |
| 24°F | Nov 1 | Nov 17 | Dec 5 |
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 | 145 days | 168 days | 188 days |
| 32°F | 168 days | 190 days | 211 days |
| 28°F | 193 days | 215 days | 237 days |
| 24°F | 216 days | 238 days | 262 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 |
|---|---|---|---|
| 47306 | 6a | -10 to -5°F | 3 km |
| 47303 | 6a | -10 to -5°F | 4 km |
| 47305 | 6a | -10 to -5°F | 5 km |
| 47304 | 6a | -10 to -5°F | 6 km |
| 47396 | 6a | -10 to -5°F | 12 km |
| 47302 | 6a | -10 to -5°F | 12 km |
| 47383 | 6a | -10 to -5°F | 14 km |
| 47342 | 6a | -10 to -5°F | 14 km |
| 47367 | 6a | -10 to -5°F | 17 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 USW00094895, at 40.2342, -85.3936, elevation 286 m (937 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 119.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Farmland 5 NNW (21 km)
- Hartford City 4 ESE (24 km)
- Anderson Sewage Plant (31 km)
- New Castle 3 SW (38 km)
- Elwood (39 km)
- Portland 1 SW (40 km)
- Winchester Airport 3 E (41 km)
- Marion 2 N (45 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.