Frost dates for Three Lynx, OR
At Three Lynx, the median last spring frost (32°F) is Apr 5 and the median first fall frost is Nov 8, for a typical growing season of 217 days. For a 90% chance that the last frost has passed, wait until Apr 30. Nearby ZIP codes are in USDA hardiness zones 7a to 8b.
- Apr 5Last spring frost (median)50% chance of 32°F after this date
- Apr 30Safer planting date10% chance of 32°F after this date
- Nov 8First fall frost (median)50% chance of 32°F by this date
- 217 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 14 | May 2 | May 18 |
| 32°F | Mar 13 | Apr 5 | Apr 30 |
| 28°F | Jan 13 | Feb 26 | Mar 24 |
| 24°F | Dec 14 | Jan 31 | Mar 1 |
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 2 | Oct 19 | Nov 7 |
| 32°F | Oct 20 | Nov 8 | Dec 1 |
| 28°F | Nov 6 | Nov 30 | Dec 30 |
| 24°F | Nov 21 | Dec 19 | Feb 7 |
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 | 146 days | 170 days | 194 days |
| 32°F | 185 days | 217 days | 249 days |
| 28°F | 245 days | 282 days | 323 days |
| 24°F | 288 days | 327 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 85% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97023 | 8a | 10 to 15°F | 14 km |
| 97067 | 8a | 10 to 15°F | 23 km |
| 97017 | 8b | 15 to 20°F | 24 km |
| 97055 | 8b | 15 to 20°F | 27 km |
| 97028 | 7a | 0 to 5°F | 28 km |
| 97011 | 8a | 10 to 15°F | 30 km |
| 97049 | 7b | 5 to 10°F | 32 km |
| 97022 | 8b | 15 to 20°F | 32 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 USC00358466, at 45.1219, -122.0700, elevation 341 m (1,120 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 72.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Estacada 2 SE (25 km)
- Government Camp (32 km)
- Molalla 7ne (35 km)
- Headworks Portland Wtr B (37 km)
- Scotts Mills 9 SE (41 km)
- Detroit Dam (47 km)
- Oregon City (49 km)
- Silver Creek Falls (53 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.