Frost dates for Towanda 1 S, PA
At Towanda 1 S, the median last spring frost (32°F) is May 2 and the median first fall frost is Oct 15, for a typical growing season of 165 days. For a 90% chance that the last frost has passed, wait until May 16. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 2Last spring frost (median)50% chance of 32°F after this date
- May 16Safer planting date10% chance of 32°F after this date
- Oct 15First fall frost (median)50% chance of 32°F by this date
- 165 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 29 | May 13 | May 29 |
| 32°F | Apr 20 | May 2 | May 16 |
| 28°F | Apr 6 | Apr 21 | May 5 |
| 24°F | Mar 25 | Apr 7 | Apr 21 |
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 22 | Oct 3 | Oct 16 |
| 32°F | Oct 1 | Oct 15 | Nov 1 |
| 28°F | Oct 11 | Oct 30 | Nov 11 |
| 24°F | Oct 26 | Nov 9 | Nov 24 |
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 | 123 days | 143 days | 162 days |
| 32°F | 145 days | 165 days | 185 days |
| 28°F | 169 days | 191 days | 210 days |
| 24°F | 196 days | 215 days | 236 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 |
|---|---|---|---|
| 18848 | 6a | -10 to -5°F | 1 km |
| 18854 | 6a | -10 to -5°F | 8 km |
| 18832 | 6a | -10 to -5°F | 13 km |
| 18814 | 6a | -10 to -5°F | 14 km |
| 18850 | 6a | -10 to -5°F | 14 km |
| 18853 | 6a | -10 to -5°F | 14 km |
| 18845 | 6a | -10 to -5°F | 22 km |
| 18829 | 6a | -10 to -5°F | 24 km |
| 18623 | 6a | -10 to -5°F | 26 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 USC00368905, at 41.7511, -76.4431, elevation 232 m (760 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 143.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Dushore (26 km)
- Canton (35 km)
- Laporte (37 km)
- Montrose (50 km)
- Benton 3 NE (58 km)
- Tioga Hammond Dam (60 km)
- Cowanesque Dam (65 km)
- Williamsport (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.