Frost dates for Cave Junction 1 WNW, OR
At Cave Junction 1 WNW, the median last spring frost (32°F) is May 1 and the median first fall frost is Oct 12, for a typical growing season of 161 days. For a 90% chance that the last frost has passed, wait until May 23. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- May 1Last spring frost (median)50% chance of 32°F after this date
- May 23Safer planting date10% chance of 32°F after this date
- Oct 12First fall frost (median)50% chance of 32°F by this date
- 161 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 | May 5 | May 28 | Jun 17 |
| 32°F | Apr 14 | May 1 | May 23 |
| 28°F | Mar 4 | Apr 4 | Apr 28 |
| 24°F | Jan 2 | Feb 22 | Mar 31 |
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 7 | Sep 23 | Oct 9 |
| 32°F | Sep 23 | Oct 12 | Nov 2 |
| 28°F | Oct 12 | Nov 2 | Dec 6 |
| 24°F | Oct 26 | Nov 27 | Jan 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 | 92 days | 118 days | 145 days |
| 32°F | 133 days | 161 days | 189 days |
| 28°F | 179 days | 210 days | 251 days |
| 24°F | 230 days | 283 days | 337 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 98% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97531 | 8b | 15 to 20°F | 6 km |
| 97523 | 8b | 15 to 20°F | 6 km |
| 97534 | 8b | 15 to 20°F | 16 km |
| 97538 | 8b | 15 to 20°F | 17 km |
| 95543 | 8a | 10 to 15°F | 33 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 USC00351448, at 42.1597, -123.6422, elevation 420 m (1,377 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 75.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Grants Pass (39 km)
- Ruch (50 km)
- Brookings 2 SE (52 km)
- Sexton Summit (54 km)
- Brookings (55 km)
- Illahe (62 km)
- Medford Rogue Valley Airport (68 km)
- Gold Beach Ranger Station (70 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.