Frost dates for Falls City 2 SSW, OR
At Falls City 2 SSW, the median last spring frost (32°F) is Apr 18 and the median first fall frost is Nov 7, for a typical growing season of 202 days. For a 90% chance that the last frost has passed, wait until May 6. Nearby ZIP codes are in USDA hardiness zone 8b.
- Apr 18Last spring frost (median)50% chance of 32°F after this date
- May 6Safer planting date10% chance of 32°F after this date
- Nov 7First fall frost (median)50% chance of 32°F by this date
- 202 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 26 | May 9 | May 29 |
| 32°F | Mar 27 | Apr 18 | May 6 |
| 28°F | Feb 15 | Mar 13 | Apr 5 |
| 24°F | Dec 29 | Feb 13 | Mar 10 |
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 21 | Nov 5 |
| 32°F | Oct 21 | Nov 7 | Nov 24 |
| 28°F | Nov 3 | Nov 23 | Dec 20 |
| 24°F | Nov 13 | Dec 14 | Jan 21 |
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 | 137 days | 160 days | 183 days |
| 32°F | 176 days | 202 days | 230 days |
| 28°F | 218 days | 252 days | 290 days |
| 24°F | 268 days | 308 days | 352 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 94% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97344 | 8b | 15 to 20°F | 4 km |
| 97361 | 8b | 15 to 20°F | 12 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 USC00352800, at 44.8358, -123.4525, elevation 210 m (690 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 70.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Laurel Mountain (14 km)
- Dallas 2 NE (18 km)
- Corvallis State Univ (31 km)
- Salem McNary Field (36 km)
- Corvallis Water Bureau (36 km)
- Otis 2 NE (43 km)
- McMinnville Muni Airport (47 km)
- Corvallis 10 SSW (47 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.