Frost dates for Winchester Bay Coast Grd, OR
At Winchester Bay Coast Grd, the median last spring frost (32°F) is Mar 25 and the median first fall frost is Nov 24, for a typical growing season of 249 days. For a 90% chance that the last frost has passed, wait until Apr 27. Nearby ZIP codes are in USDA hardiness zone 9a.
- Mar 25Last spring frost (median)50% chance of 32°F after this date
- Apr 27Safer planting date10% chance of 32°F after this date
- Nov 24First fall frost (median)50% chance of 32°F by this date
- 249 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 31 | Apr 27 | May 19 |
| 32°F | Feb 15 | Mar 25 | Apr 27 |
| 28°F | Dec 23 | Feb 17 | Mar 29 |
| 24°F | Dec 12 | Jan 24 | Mar 4 |
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 8 | Oct 30 | Nov 25 |
| 32°F | Oct 27 | Nov 24 | Jan 1 |
| 28°F | Nov 15 | Dec 26 | Feb 19 |
| 24°F | Dec 7 | Jan 10 | Mar 2 |
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 | 157 days | 188 days | 222 days |
| 32°F | 202 days | 249 days | 304 days |
| 28°F | 265 days | 314 days | 365 days |
| 24°F | 314 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 85% |
| 24°F | 36% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97441 | 9a | 20 to 25°F | 8 km |
| 97449 | 9a | 20 to 25°F | 17 km |
| 97473 | 9a | 20 to 25°F | 21 km |
| 97467 | 9a | 20 to 25°F | 23 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 USC00353193, at 43.6814, -124.1781, elevation 2 m (8 ft).
- Data quality: Representative (10+ years), 16 years of freeze data.
- Average days per year at or below 32°F: 19.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Honeyman State Park (28 km)
- North Bend Regional Airport (30 km)
- Florence #2 (36 km)
- Mapleton (47 km)
- Coos Bay 8 SW (47 km)
- Elkton 3 SW (47 km)
- Elkton 1sw (48 km)
- Coquille City (55 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.