Frost dates for Lookout Point Dam, OR
At Lookout Point Dam, the median last spring frost (32°F) is Mar 7 and the median first fall frost is Nov 27, for a typical growing season of 263 days. For a 90% chance that the last frost has passed, wait until Apr 2. Nearby ZIP codes are in USDA hardiness zones 8b to 9a.
- Mar 7Last spring frost (median)50% chance of 32°F after this date
- Apr 2Safer planting date10% chance of 32°F after this date
- Nov 27First fall frost (median)50% chance of 32°F by this date
- 263 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 20 | Apr 16 | May 9 |
| 32°F | Feb 4 | Mar 7 | Apr 2 |
| 28°F | Dec 21 | Feb 2 | Mar 5 |
| 24°F | Dec 10 | Jan 7 | Feb 19 |
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 19 | Nov 9 | Nov 29 |
| 32°F | Nov 1 | Nov 27 | Dec 21 |
| 28°F | Nov 18 | Dec 16 | Feb 1 |
| 24°F | Dec 3 | Dec 30 | Feb 12 |
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 | 174 days | 207 days | 242 days |
| 32°F | 228 days | 263 days | 305 days |
| 28°F | 276 days | 319 days | 365 days |
| 24°F | 316 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 90% |
| 24°F | 50% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97452 | 9a | 20 to 25°F | 4 km |
| 97438 | 8b | 15 to 20°F | 7 km |
| 97431 | 9a | 20 to 25°F | 8 km |
| 97455 | 8b | 15 to 20°F | 14 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 USC00355050, at 43.9139, -122.7600, elevation 217 m (712 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 27.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Leaburg 1 SW (22 km)
- Dorena (22 km)
- Cottage Grove 2e (25 km)
- Oakridge Fish Hatchery (32 km)
- Cottage Grove Dam (32 km)
- Eugene Mahlon Sweet Airport (44 km)
- Cougar Dam (48 km)
- Fern Ridge-Veneta (51 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.