Frost dates for Saranac Regional Airport, NY
At Saranac Regional Airport, the median last spring frost (32°F) is Jun 2 and the median first fall frost is Sep 9, for a typical growing season of 97 days. For a 90% chance that the last frost has passed, wait until Jun 19. Nearby ZIP codes are in USDA hardiness zone 4a.
- Jun 2Last spring frost (median)50% chance of 32°F after this date
- Jun 19Safer planting date10% chance of 32°F after this date
- Sep 9First fall frost (median)50% chance of 32°F by this date
- 97 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 |
|---|---|---|---|
| 32°F | May 20 | Jun 2 | Jun 19 |
| 28°F | May 7 | May 21 | Jun 4 |
| 24°F | Apr 25 | May 9 | May 24 |
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 |
|---|---|---|---|
| 32°F | Aug 26 | Sep 9 | Sep 24 |
| 28°F | Sep 7 | Sep 23 | Oct 7 |
| 24°F | Sep 19 | Oct 6 | Oct 25 |
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 | 36 days | 63 days | 90 days |
| 32°F | 72 days | 97 days | 118 days |
| 28°F | 103 days | 123 days | 144 days |
| 24°F | 127 days | 149 days | 169 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 |
|---|---|---|---|
| 12939 | 4a | -30 to -25°F | 6 km |
| 12983 | 4a | -30 to -25°F | 7 km |
| 12945 | 4a | -30 to -25°F | 9 km |
| 12970 | 4a | -30 to -25°F | 12 km |
| 12976 | 4a | -30 to -25°F | 13 km |
| 12989 | 4a | -30 to -25°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 USW00094740, at 44.3853, -74.2067, elevation 507 m (1,663 ft).
- Data quality: Representative (10+ years), 22 years of freeze data.
- Average days per year at or below 32°F: 201.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Ray Brook (13 km)
- Lake Placid 2 S (20 km)
- Tupper Lake Sunmount (25 km)
- Newcomb (46 km)
- Malone (51 km)
- Dannemora (53 km)
- Peru 2 WSW (54 km)
- Lawrenceville 3 SW (55 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.