Frost dates for Glenwillard Dashields L&d, PA
At Glenwillard Dashields L&d, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Nov 8, for a typical growing season of 212 days. For a 90% chance that the last frost has passed, wait until Apr 26. Nearby ZIP codes are in USDA hardiness zones 6b to 7a.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- Apr 26Safer planting date10% chance of 32°F after this date
- Nov 8First fall frost (median)50% chance of 32°F by this date
- 212 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 7 | Apr 24 | May 13 |
| 32°F | Mar 25 | Apr 8 | Apr 26 |
| 28°F | Mar 14 | Mar 29 | Apr 12 |
| 24°F | Mar 2 | Mar 19 | Mar 31 |
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 | Oct 13 | Oct 28 | Nov 10 |
| 32°F | Oct 27 | Nov 8 | Nov 24 |
| 28°F | Nov 5 | Nov 18 | Dec 4 |
| 24°F | Nov 12 | Nov 30 | Dec 19 |
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 | 163 days | 186 days | 209 days |
| 32°F | 190 days | 212 days | 233 days |
| 28°F | 215 days | 235 days | 256 days |
| 24°F | 232 days | 254 days | 281 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 |
|---|---|---|---|
| 15056 | 7a | 0 to 5°F | 2 km |
| 15046 | 7a | 0 to 5°F | 2 km |
| 15081 | 6b | -5 to 0°F | 4 km |
| 15143 | 6b | -5 to 0°F | 5 km |
| 15003 | 6b | -5 to 0°F | 6 km |
| 15005 | 6b | -5 to 0°F | 11 km |
| 15015 | 6b | -5 to 0°F | 14 km |
| 15086 | 6b | -5 to 0°F | 16 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 USC00363343, at 40.5489, -80.2058, elevation 216 m (710 ft).
- Data quality: Estimated from nearby stations (2+ years), 7 years of freeze data.
- Average days per year at or below 32°F: 93.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Moon Twp (2 km)
- Pittsburgh Intl Airport (7 km)
- Emsworth L/d Ohio River (11 km)
- Montgomery L&d (19 km)
- Beaver Falls 1 NE (25 km)
- Pittsburgh Allegheny Co Airport (32 km)
- Acmetonia Lock 3 (33 km)
- Braddock Lock 2 (34 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.