Frost dates for Niagara Falls Intl Airport, NY
At Niagara Falls Intl Airport, the median last spring frost (32°F) is May 1 and the median first fall frost is Oct 19, for a typical growing season of 167 days. For a 90% chance that the last frost has passed, wait until May 15. Nearby ZIP codes are in USDA hardiness zone 6b.
- May 1Last spring frost (median)50% chance of 32°F after this date
- May 15Safer planting date10% chance of 32°F after this date
- Oct 19First fall frost (median)50% chance of 32°F by this date
- 167 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 30 | May 11 | May 25 |
| 32°F | Apr 21 | May 1 | May 15 |
| 28°F | Apr 8 | Apr 22 | May 6 |
| 24°F | Mar 27 | Apr 9 | Apr 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 |
|---|---|---|---|
| 36°F | Sep 25 | Oct 6 | Oct 20 |
| 32°F | Oct 3 | Oct 19 | Nov 2 |
| 28°F | Oct 17 | Nov 1 | Nov 14 |
| 24°F | Oct 31 | Nov 12 | Nov 26 |
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 | 128 days | 147 days | 164 days |
| 32°F | 149 days | 167 days | 187 days |
| 28°F | 170 days | 191 days | 211 days |
| 24°F | 196 days | 217 days | 237 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 |
|---|---|---|---|
| 14304 | 6b | -5 to 0°F | 0 km |
| 14132 | 6b | -5 to 0°F | 7 km |
| 14092 | 6b | -5 to 0°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 USW00004724, at 43.1072, -78.9453, elevation 178 m (585 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 132.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Niagara Falls (3 km)
- N Tonawanda (9 km)
- Youngstown 2 E (17 km)
- Buffalo (24 km)
- Lockport 4e (29 km)
- Wales (50 km)
- Colden 1 N (54 km)
- Colden 1w (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.