Frost dates for Centralia, WA
At Centralia, the median last spring frost (32°F) is Apr 22 and the median first fall frost is Oct 27, for a typical growing season of 188 days. For a 90% chance that the last frost has passed, wait until May 10. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Apr 22Last spring frost (median)50% chance of 32°F after this date
- May 10Safer planting date10% chance of 32°F after this date
- Oct 27First fall frost (median)50% chance of 32°F by this date
- 188 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 7 | May 24 |
| 32°F | Mar 30 | Apr 22 | May 10 |
| 28°F | Feb 24 | Mar 23 | Apr 17 |
| 24°F | Jan 2 | Feb 20 | Mar 17 |
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 22 | Oct 8 | Oct 26 |
| 32°F | Oct 7 | Oct 27 | Nov 17 |
| 28°F | Oct 21 | Nov 13 | Dec 7 |
| 24°F | Nov 6 | Nov 30 | Jan 1 |
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 | 130 days | 154 days | 178 days |
| 32°F | 163 days | 188 days | 215 days |
| 28°F | 200 days | 234 days | 269 days |
| 24°F | 248 days | 286 days | 333 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 98% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 98531 | 8b | 15 to 20°F | 5 km |
| 98544 | 8b | 15 to 20°F | 6 km |
| 98530 | 8b | 15 to 20°F | 12 km |
| 98532 | 8a | 10 to 15°F | 13 km |
| 98579 | 8b | 15 to 20°F | 15 km |
| 98589 | 8b | 15 to 20°F | 17 km |
| 98539 | 8a | 10 to 15°F | 26 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 USC00451276, at 46.7200, -122.9528, elevation 56 m (185 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 48.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Toledo FAA Airport (28 km)
- Olympia Airport (28 km)
- Mayfield Power Plant (36 km)
- Elma (47 km)
- Matlock 8 S (58 km)
- Shelton Sanderson Field (59 km)
- Grays River Hatchery (59 km)
- Raymond 2 S (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.