Frost dates for Prince Gallitzin State Park, PA
At Prince Gallitzin State Park, the median last spring frost (32°F) is May 10 and the median first fall frost is Oct 5, for a typical growing season of 149 days. For a 90% chance that the last frost has passed, wait until May 28. Nearby ZIP codes are in USDA hardiness zone 6a.
- May 10Last spring frost (median)50% chance of 32°F after this date
- May 28Safer planting date10% chance of 32°F after this date
- Oct 5First fall frost (median)50% chance of 32°F by this date
- 149 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 4 | May 24 | Jun 6 |
| 32°F | Apr 25 | May 10 | May 28 |
| 28°F | Apr 15 | Apr 29 | May 18 |
| 24°F | Apr 2 | Apr 18 | May 5 |
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 26 | Oct 8 |
| 32°F | Sep 24 | Oct 5 | Oct 21 |
| 28°F | Oct 3 | Oct 18 | Nov 3 |
| 24°F | Oct 13 | Nov 1 | Nov 15 |
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 | 104 days | 125 days | 147 days |
| 32°F | 127 days | 149 days | 171 days |
| 28°F | 148 days | 171 days | 193 days |
| 24°F | 172 days | 196 days | 218 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 |
|---|---|---|---|
| 16668 | 6a | -10 to -5°F | 6 km |
| 16640 | 6a | -10 to -5°F | 6 km |
| 16636 | 6a | -10 to -5°F | 7 km |
| 16639 | 6a | -10 to -5°F | 8 km |
| 16624 | 6a | -10 to -5°F | 11 km |
| 16675 | 6a | -10 to -5°F | 11 km |
| 16627 | 6a | -10 to -5°F | 12 km |
| 16619 | 6a | -10 to -5°F | 12 km |
| 15773 | 6a | -10 to -5°F | 15 km |
| 16646 | 6a | -10 to -5°F | 15 km |
| 16616 | 6a | -10 to -5°F | 15 km |
| 15753 | 6a | -10 to -5°F | 16 km |
| 16692 | 6a | -10 to -5°F | 17 km |
| 16656 | 6a | -10 to -5°F | 17 km |
| 16645 | 6a | -10 to -5°F | 18 km |
| 16680 | 6a | -10 to -5°F | 18 km |
| 15738 | 6a | -10 to -5°F | 20 km |
| 15724 | 6a | -10 to -5°F | 24 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 USC00367167, at 40.6514, -78.5550, elevation 463 m (1,520 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 154.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Altoona 3 W (19 km)
- Ebensburg Sewage Plant (25 km)
- Altoona 7 SW (28 km)
- Grampian 1e (35 km)
- Philipsburg 2 S (38 km)
- Johnstown Cambria Co Airport (44 km)
- Altoona Blair Co Airport (44 km)
- Clearfield Lawrence Airport (46 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.