Frost dates for Leaburg 1 SW, OR
At Leaburg 1 SW, the median last spring frost (32°F) is Apr 3 and the median first fall frost is Nov 11, for a typical growing season of 220 days. For a 90% chance that the last frost has passed, wait until May 2. Nearby ZIP codes are in USDA hardiness zone 8b.
- Apr 3Last spring frost (median)50% chance of 32°F after this date
- May 2Safer planting date10% chance of 32°F after this date
- Nov 11First 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 13 | May 3 | May 22 |
| 32°F | Mar 5 | Apr 3 | May 2 |
| 28°F | Jan 3 | Feb 22 | Mar 26 |
| 24°F | Dec 9 | Jan 13 | Feb 26 |
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 1 | Oct 23 | Nov 10 |
| 32°F | Oct 21 | Nov 11 | Dec 5 |
| 28°F | Nov 6 | Dec 4 | Jan 10 |
| 24°F | Nov 25 | Dec 19 | Feb 4 |
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 | 143 days | 170 days | 200 days |
| 32°F | 186 days | 220 days | 256 days |
| 28°F | 241 days | 284 days | 334 days |
| 24°F | 304 days | 348 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 98% |
| 24°F | 70% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97489 | 8b | 15 to 20°F | 7 km |
| 97478 | 8b | 15 to 20°F | 12 km |
| 97454 | 8b | 15 to 20°F | 17 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 USC00354811, at 44.1014, -122.6886, elevation 206 m (675 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 49.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Lookout Point Dam (22 km)
- Foster Dam (35 km)
- Cougar Dam (36 km)
- Cascadia (36 km)
- Dorena (42 km)
- Eugene Mahlon Sweet Airport (43 km)
- Cottage Grove 2e (44 km)
- Oakridge Fish Hatchery (44 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.