Frost dates for Crystal Springs Exp. Station, MS
At Crystal Springs Exp. Station, the median last spring frost (32°F) is Mar 11 and the median first fall frost is Nov 16, for a typical growing season of 250 days. For a 90% chance that the last frost has passed, wait until Mar 30. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 11Last spring frost (median)50% chance of 32°F after this date
- Mar 30Safer planting date10% chance of 32°F after this date
- Nov 16First fall frost (median)50% chance of 32°F by this date
- 250 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 6 | Mar 26 | Apr 12 |
| 32°F | Feb 21 | Mar 11 | Mar 30 |
| 28°F | Jan 31 | Feb 26 | Mar 16 |
| 24°F | Jan 16 | Feb 12 | Mar 7 |
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 25 | Nov 6 | Nov 22 |
| 32°F | Nov 1 | Nov 16 | Dec 6 |
| 28°F | Nov 7 | Nov 28 | Dec 27 |
| 24°F | Nov 18 | Dec 20 | Jan 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 | 202 days | 225 days | 250 days |
| 32°F | 225 days | 250 days | 279 days |
| 28°F | 248 days | 277 days | 310 days |
| 24°F | 273 days | 309 days | 346 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 97% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 39059 | 8b | 15 to 20°F | 5 km |
| 39170 | 8b | 15 to 20°F | 19 km |
| 39078 | 8b | 15 to 20°F | 19 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 USC00222094, at 31.9461, -90.3775, elevation 148 m (487 ft).
- Data quality: Representative (10+ years), 26 years of freeze data.
- Average days per year at or below 32°F: 36.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hazlehurst 5 SW (15 km)
- Oakley Exp. Station (32 km)
- D'lo 2 SW (42 km)
- Brookhaven City (45 km)
- Jackson Hawkins Field (46 km)
- Jackson Intl Airport (50 km)
- Monticello (51 km)
- Port Gibson 1 NE (56 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.