Frost dates for Grayland, WA
At Grayland, the median last spring frost (32°F) is Mar 29 and the median first fall frost is Nov 7, for a typical growing season of 224 days. For a 90% chance that the last frost has passed, wait until Apr 24. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Mar 29Last spring frost (median)50% chance of 32°F after this date
- Apr 24Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 224 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 6 | Apr 29 | May 27 |
| 32°F | Feb 28 | Mar 29 | Apr 24 |
| 28°F | Jan 11 | Feb 22 | Mar 24 |
| 24°F | Dec 7 | Jan 21 | Feb 23 |
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 16 | Nov 5 |
| 32°F | Oct 19 | Nov 7 | Dec 1 |
| 28°F | Nov 2 | Dec 1 | Jan 8 |
| 24°F | Nov 22 | Dec 20 | Feb 9 |
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 | 138 days | 171 days | 200 days |
| 32°F | 190 days | 224 days | 258 days |
| 28°F | 242 days | 284 days | 330 days |
| 24°F | 304 days | 342 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 99% |
| 24°F | 70% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 98547 | 9a | 20 to 25°F | 4 km |
| 98595 | 9a | 20 to 25°F | 11 km |
| 98590 | 9b | 25 to 30°F | 12 km |
| 98640 | 9a | 20 to 25°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 USC00453320, at 46.8008, -124.0864, elevation 3 m (10 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 37.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Hoquiam Bowerman Airport (23 km)
- Aberdeen (27 km)
- Raymond 2 S (32 km)
- Long Beach Exp. Station (48 km)
- Humptulips Salmon Hatchery (49 km)
- Naselle 2 ENE (54 km)
- Elma (57 km)
- Aberdeen 20nne (58 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.