Frost dates for Glens Falls Airport, NY
At Glens Falls Airport, the median last spring frost (32°F) is May 9 and the median first fall frost is Sep 30, for a typical growing season of 143 days. For a 90% chance that the last frost has passed, wait until May 25. Nearby ZIP codes are in USDA hardiness zone 5a.
- May 9Last spring frost (median)50% chance of 32°F after this date
- May 25Safer planting date10% chance of 32°F after this date
- Sep 30First fall frost (median)50% chance of 32°F by this date
- 143 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 7 | May 23 | Jun 5 |
| 32°F | Apr 27 | May 9 | May 25 |
| 28°F | Apr 17 | Apr 28 | May 13 |
| 24°F | Apr 4 | Apr 17 | Apr 30 |
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 9 | Sep 21 | Oct 3 |
| 32°F | Sep 18 | Sep 30 | Oct 13 |
| 28°F | Sep 28 | Oct 9 | Oct 27 |
| 24°F | Oct 7 | Oct 24 | Nov 8 |
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 | 101 days | 119 days | 139 days |
| 32°F | 121 days | 143 days | 161 days |
| 28°F | 145 days | 164 days | 184 days |
| 24°F | 168 days | 190 days | 210 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 |
|---|---|---|---|
| 12839 | 5a | -20 to -15°F | 5 km |
| 12845 | 5a | -20 to -15°F | 12 km |
| 12828 | 5a | -20 to -15°F | 12 km |
| 12827 | 5a | -20 to -15°F | 12 km |
| 12820 | 5a | -20 to -15°F | 12 km |
| 12844 | 5a | -20 to -15°F | 15 km |
| 12809 | 5a | -20 to -15°F | 17 km |
| 12838 | 5a | -20 to -15°F | 17 km |
| 12824 | 5a | -20 to -15°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 USW00014750, at 43.3500, -73.6167, elevation 98 m (321 ft).
- Data quality: Standard (24+ years of data), 30 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
- Glens Falls Farm (6 km)
- Conklingville Dam (25 km)
- Whitehall (29 km)
- Saratoga Springs 4 SW (38 km)
- Buskirk (48 km)
- Grafton (64 km)
- Troy L&d (67 km)
- Albany Airport (69 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.