Frost dates for Philadelphia 1 WSW, MS
At Philadelphia 1 WSW, the median last spring frost (32°F) is Mar 20 and the median first fall frost is Nov 9, for a typical growing season of 235 days. For a 90% chance that the last frost has passed, wait until Apr 9. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 20Last spring frost (median)50% chance of 32°F after this date
- Apr 9Safer planting date10% chance of 32°F after this date
- Nov 9First fall frost (median)50% chance of 32°F by this date
- 235 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 | Mar 15 | Apr 3 | Apr 21 |
| 32°F | Feb 28 | Mar 20 | Apr 9 |
| 28°F | Feb 11 | Mar 4 | Mar 25 |
| 24°F | Jan 20 | Feb 16 | Mar 12 |
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 17 | Oct 30 | Nov 14 |
| 32°F | Oct 26 | Nov 9 | Nov 28 |
| 28°F | Nov 3 | Nov 21 | Dec 14 |
| 24°F | Nov 13 | Dec 7 | Jan 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 | 190 days | 210 days | 235 days |
| 32°F | 209 days | 235 days | 261 days |
| 28°F | 236 days | 263 days | 292 days |
| 24°F | 262 days | 296 days | 332 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 99% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39350 | 8b | 15 to 20°F | 3 km |
| 39365 | 8b | 15 to 20°F | 18 km |
| 39354 | 8b | 15 to 20°F | 30 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 USC00226894, at 32.7692, -89.1303, elevation 126 m (413 ft).
- Data quality: Standard (24+ years of data), 28 years of freeze data.
- Average days per year at or below 32°F: 49.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Carthage (38 km)
- Louisville (41 km)
- Newton Exp. Station (48 km)
- Newton 5 ENE (48 km)
- Kosciusko (53 km)
- Forest (53 km)
- Meridian Naas (58 km)
- Meridian Key Field (60 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.