Frost dates for Salina 3 W, PA
At Salina 3 W, the median last spring frost (32°F) is Apr 29 and the median first fall frost is Oct 20, for a typical growing season of 171 days. For a 90% chance that the last frost has passed, wait until May 17. Nearby ZIP codes are in USDA hardiness zone 6b.
- Apr 29Last spring frost (median)50% chance of 32°F after this date
- May 17Safer planting date10% chance of 32°F after this date
- Oct 20First fall frost (median)50% chance of 32°F by this date
- 171 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 24 | May 10 | May 28 |
| 32°F | Apr 14 | Apr 29 | May 17 |
| 28°F | Apr 1 | Apr 18 | May 4 |
| 24°F | Mar 22 | Apr 5 | Apr 19 |
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 7 | Oct 22 |
| 32°F | Oct 5 | Oct 20 | Nov 4 |
| 28°F | Oct 16 | Nov 1 | Nov 16 |
| 24°F | Oct 31 | Nov 12 | Nov 30 |
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 | 127 days | 149 days | 170 days |
| 32°F | 151 days | 171 days | 193 days |
| 28°F | 175 days | 197 days | 220 days |
| 24°F | 202 days | 222 days | 243 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 |
|---|---|---|---|
| 15613 | 6b | -5 to 0°F | 4 km |
| 15680 | 6b | -5 to 0°F | 4 km |
| 15673 | 6b | -5 to 0°F | 9 km |
| 15632 | 6b | -5 to 0°F | 10 km |
| 15618 | 6b | -5 to 0°F | 11 km |
| 15626 | 6b | -5 to 0°F | 12 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 USC00367782, at 40.5100, -79.5458, elevation 338 m (1,109 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 140.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Loyalhanna Lake (10 km)
- Murrysville 2 SW (19 km)
- Natrona Lock 4 (19 km)
- Schenley Lock 5 (22 km)
- Ford City 4 S Dam (23 km)
- Acmetonia Lock 3 (23 km)
- Braddock Lock 2 (30 km)
- McKeesport (33 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.