Frost dates for Rock Hill 3 SW, NY
At Rock Hill 3 SW, the median last spring frost (32°F) is May 7 and the median first fall frost is Oct 7, for a typical growing season of 152 days. For a 90% chance that the last frost has passed, wait until May 22. Nearby ZIP codes are in USDA hardiness zones 6a to 6b.
- May 7Last spring frost (median)50% chance of 32°F after this date
- May 22Safer planting date10% chance of 32°F after this date
- Oct 7First fall frost (median)50% chance of 32°F by this date
- 152 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 3 | May 19 | Jun 1 |
| 32°F | Apr 25 | May 7 | May 22 |
| 28°F | Apr 15 | Apr 27 | May 10 |
| 24°F | Apr 4 | Apr 16 | Apr 29 |
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 15 | Sep 28 | Oct 9 |
| 32°F | Sep 25 | Oct 7 | Oct 22 |
| 28°F | Oct 4 | Oct 20 | Nov 4 |
| 24°F | Oct 18 | Nov 3 | Nov 18 |
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 | 112 days | 131 days | 150 days |
| 32°F | 135 days | 152 days | 172 days |
| 28°F | 156 days | 176 days | 196 days |
| 24°F | 179 days | 201 days | 220 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 |
|---|---|---|---|
| 12775 | 6a | -10 to -5°F | 4 km |
| 12785 | 6b | -5 to 0°F | 5 km |
| 12790 | 6b | -5 to 0°F | 8 km |
| 12738 | 6a | -10 to -5°F | 8 km |
| 12784 | 6a | -10 to -5°F | 8 km |
| 12777 | 6a | -10 to -5°F | 9 km |
| 12701 | 6a | -10 to -5°F | 10 km |
| 12779 | 6a | -10 to -5°F | 11 km |
| 12729 | 6b | -5 to 0°F | 11 km |
| 12751 | 6a | -10 to -5°F | 11 km |
| 12781 | 6b | -5 to 0°F | 12 km |
| 12763 | 6a | -10 to -5°F | 13 km |
| 12769 | 6b | -5 to 0°F | 14 km |
| 12789 | 6a | -10 to -5°F | 14 km |
| 12483 | 6b | -5 to 0°F | 16 km |
| 12435 | 6a | -10 to -5°F | 17 km |
| 12428 | 6b | -5 to 0°F | 21 km |
| 12420 | 6a | -10 to -5°F | 21 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 USC00307210, at 41.5917, -74.6142, elevation 387 m (1,270 ft).
- Data quality: Estimated from nearby stations (2+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 160.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Middletown 2 NW (20 km)
- Port Jervis (23 km)
- Liberty 1 NE (26 km)
- Montgomery Orange Airport (30 km)
- Walden 1 ESE (38 km)
- Callicoon Center (38 km)
- Mohonk Lake (43 km)
- Slide Mountain (50 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.