Frost dates for Rochester Gtr Intl Airport, NY
At Rochester Gtr Intl Airport, the median last spring frost (32°F) is Apr 24 and the median first fall frost is Oct 25, for a typical growing season of 181 days. For a 90% chance that the last frost has passed, wait until May 8. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 24Last spring frost (median)50% chance of 32°F after this date
- May 8Safer planting date10% chance of 32°F after this date
- Oct 25First fall frost (median)50% chance of 32°F by this date
- 181 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 23 | May 4 | May 19 |
| 32°F | Apr 12 | Apr 24 | May 8 |
| 28°F | Apr 1 | Apr 14 | Apr 26 |
| 24°F | Mar 19 | Apr 2 | Apr 16 |
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 11 | Oct 27 |
| 32°F | Oct 8 | Oct 25 | Nov 7 |
| 28°F | Oct 25 | Nov 6 | Nov 21 |
| 24°F | Nov 4 | Nov 18 | Dec 3 |
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 | 139 days | 158 days | 176 days |
| 32°F | 162 days | 181 days | 201 days |
| 28°F | 186 days | 207 days | 228 days |
| 24°F | 211 days | 230 days | 252 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 |
|---|---|---|---|
| 14619 | 6b | -5 to 0°F | 3 km |
| 14611 | 6b | -5 to 0°F | 4 km |
| 14623 | 6b | -5 to 0°F | 4 km |
| 14624 | 6b | -5 to 0°F | 5 km |
| 14620 | 6b | -5 to 0°F | 6 km |
| 14608 | 6b | -5 to 0°F | 6 km |
| 14606 | 6b | -5 to 0°F | 6 km |
| 14604 | 6b | -5 to 0°F | 7 km |
| 14613 | 6b | -5 to 0°F | 8 km |
| 14607 | 6b | -5 to 0°F | 8 km |
| 14586 | 6b | -5 to 0°F | 8 km |
| 14605 | 6b | -5 to 0°F | 8 km |
| 14615 | 6b | -5 to 0°F | 10 km |
| 14618 | 6b | -5 to 0°F | 10 km |
| 14621 | 6b | -5 to 0°F | 10 km |
| 14467 | 6b | -5 to 0°F | 10 km |
| 14610 | 6b | -5 to 0°F | 11 km |
| 14626 | 6b | -5 to 0°F | 11 km |
| 14514 | 6b | -5 to 0°F | 12 km |
| 14609 | 6b | -5 to 0°F | 12 km |
| 14546 | 6b | -5 to 0°F | 13 km |
| 14616 | 6b | -5 to 0°F | 13 km |
| 14617 | 6b | -5 to 0°F | 14 km |
| 14428 | 6b | -5 to 0°F | 15 km |
| 14515 | 6b | -5 to 0°F | 16 km |
| 14612 | 6b | -5 to 0°F | 16 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 USW00014768, at 43.1167, -77.6767, elevation 162 m (533 ft).
- Data quality: Standard (24+ years of data), 25 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
- Victor 2nw (22 km)
- Avon (23 km)
- Brockport (25 km)
- Webster 2 NE (27 km)
- Pavilion 2ne (34 km)
- Hemlock (38 km)
- Honeoye (39 km)
- Batavia (41 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.