Frost dates for Corning, NY
At Corning, the median last spring frost (32°F) is May 17 and the median first fall frost is Oct 2, for a typical growing season of 139 days. For a 90% chance that the last frost has passed, wait until May 31. Nearby ZIP codes are in USDA hardiness zones 5b to 6a.
- May 17Last spring frost (median)50% chance of 32°F after this date
- May 31Safer planting date10% chance of 32°F after this date
- Oct 2First fall frost (median)50% chance of 32°F by this date
- 139 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 | May 13 | May 29 | Jun 11 |
| 32°F | Apr 30 | May 17 | May 31 |
| 28°F | Apr 21 | May 4 | May 20 |
| 24°F | Apr 8 | Apr 23 | May 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 11 | Sep 24 | Oct 4 |
| 32°F | Sep 21 | Oct 2 | Oct 16 |
| 28°F | Sep 30 | Oct 13 | Oct 30 |
| 24°F | Oct 8 | Oct 27 | Nov 10 |
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 | 97 days | 117 days | 135 days |
| 32°F | 121 days | 139 days | 160 days |
| 28°F | 139 days | 162 days | 183 days |
| 24°F | 162 days | 185 days | 207 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 |
|---|---|---|---|
| 14830 | 5b | -15 to -10°F | 4 km |
| 14870 | 6a | -10 to -5°F | 6 km |
| 14827 | 6a | -10 to -5°F | 8 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 USC00301787, at 42.1342, -77.0692, elevation 350 m (1,147 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 163.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Addison (14 km)
- Elmira Corning Regional Airport (15 km)
- Elmira (20 km)
- Bath (33 km)
- Mecklenburg 4sw (43 km)
- Waverly (47 km)
- Spencer 1 NE (50 km)
- Penn Yan Airport (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.