Frost dates for Florence #2, OR
At Florence #2, the median last spring frost (32°F) is Apr 10 and the median first fall frost is Nov 15, for a typical growing season of 220 days. For a 90% chance that the last frost has passed, wait until May 5. Nearby ZIP codes are in USDA hardiness zone 9a.
- Apr 10Last spring frost (median)50% chance of 32°F after this date
- May 5Safer planting date10% chance of 32°F after this date
- Nov 15First fall frost (median)50% chance of 32°F by this date
- 220 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 18 | May 8 | May 30 |
| 32°F | Mar 6 | Apr 10 | May 5 |
| 28°F | Dec 25 | Feb 26 | Apr 1 |
| 24°F | Dec 4 | Jan 12 | Mar 13 |
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 17 | Oct 15 | Nov 9 |
| 32°F | Oct 23 | Nov 15 | Dec 13 |
| 28°F | Nov 12 | Dec 12 | Feb 17 |
| 24°F | Nov 29 | Dec 23 | Mar 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 | 123 days | 159 days | 190 days |
| 32°F | 185 days | 220 days | 263 days |
| 28°F | 248 days | 294 days | 357 days |
| 24°F | 311 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 93% |
| 24°F | 41% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97439 | 9a | 20 to 25°F | 9 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 USC00352973, at 44.0039, -124.0947, elevation 23 m (75 ft).
- Data quality: Representative (10+ years), 14 years of freeze data.
- Average days per year at or below 32°F: 32.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Honeyman State Park (8 km)
- Mapleton (19 km)
- Yachats (36 km)
- Winchester Bay Coast Grd (36 km)
- Alsea Fh (fall Creek) (52 km)
- Elkton 1sw (57 km)
- Fern Ridge-Veneta (58 km)
- Elkton 3 SW (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.