Frost dates for Norwich, NY
At Norwich, the median last spring frost (32°F) is May 13 and the median first fall frost is Oct 4, for a typical growing season of 142 days. For a 90% chance that the last frost has passed, wait until May 27. Nearby ZIP codes are in USDA hardiness zone 5b.
- May 13Last spring frost (median)50% chance of 32°F after this date
- May 27Safer planting date10% chance of 32°F after this date
- Oct 4First fall frost (median)50% chance of 32°F by this date
- 142 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 11 | May 26 | Jun 6 |
| 32°F | Apr 28 | May 13 | May 27 |
| 28°F | Apr 18 | May 1 | May 17 |
| 24°F | Apr 3 | Apr 19 | May 3 |
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 12 | Sep 25 | Oct 7 |
| 32°F | Sep 20 | Oct 4 | Oct 18 |
| 28°F | Sep 29 | Oct 15 | Nov 1 |
| 24°F | Oct 11 | Oct 30 | Nov 10 |
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 | 102 days | 121 days | 141 days |
| 32°F | 123 days | 142 days | 162 days |
| 28°F | 143 days | 164 days | 186 days |
| 24°F | 165 days | 191 days | 213 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 |
|---|---|---|---|
| 13815 | 5b | -15 to -10°F | 4 km |
| 13780 | 5b | -15 to -10°F | 11 km |
| 13830 | 5b | -15 to -10°F | 13 km |
| 13843 | 5b | -15 to -10°F | 15 km |
| 13776 | 5b | -15 to -10°F | 15 km |
| 13809 | 5b | -15 to -10°F | 16 km |
| 13801 | 5b | -15 to -10°F | 21 km |
| 13808 | 5b | -15 to -10°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 USC00306085, at 42.5117, -75.5197, elevation 301 m (989 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
- Sherburne (18 km)
- E Sidney (31 km)
- Morrisville 6 SW (40 km)
- Whitney Point Dam (41 km)
- Emmons (42 km)
- Walton 2 (48 km)
- Deposit (51 km)
- Binghamton (52 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.