Frost dates for Brookings, OR
At Brookings, the median last spring frost (32°F) is Jan 31 and the median first fall frost is Dec 27, for a typical growing season of 349 days. For a 90% chance that the last frost has passed, wait until Mar 21. Nearby ZIP codes are in USDA hardiness zones 8a to 9b.
- Jan 31Last spring frost (median)50% chance of 32°F after this date
- Mar 21Safer planting date10% chance of 32°F after this date
- Dec 27First fall frost (median)50% chance of 32°F by this date
- 349 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 | Jan 31 | Mar 23 | Apr 26 |
| 32°F | Dec 9 | Jan 31 | Mar 21 |
| 28°F | Dec 8 | Jan 3 | Feb 16 |
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 | Nov 14 | Dec 7 | Jan 30 |
| 32°F | Nov 26 | Dec 27 | Feb 27 |
| 28°F | Dec 1 | Dec 30 | Feb 14 |
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 | 214 days | 259 days | 320 days |
| 32°F | 291 days | 349 days | 365 days |
| 28°F | 351 days | 365 days | 365 days |
| 24°F | 365 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 98% |
| 32°F | 61% |
| 28°F | 14% |
| 24°F | 2% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97415 | 9b | 25 to 30°F | 16 km |
| 95567 | 9b | 25 to 30°F | 19 km |
| 95538 | 9b | 25 to 30°F | 23 km |
| 95531 | 9b | 25 to 30°F | 24 km |
| 95543 | 8a | 10 to 15°F | 44 km |
| 97444 | 9b | 25 to 30°F | 44 km |
| 97534 | 8b | 15 to 20°F | 49 km |
| 97523 | 8b | 15 to 20°F | 53 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 USC00351058, at 42.0464, -124.2878, elevation 25 m (82 ft).
- Data quality: Representative (10+ years), 15 years of freeze data.
- Average days per year at or below 32°F: 5.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Brookings 2 SE (4 km)
- Gold Beach Ranger Station (41 km)
- Cave Junction 1 WNW (55 km)
- Illahe (67 km)
- Port Orford #2 (80 km)
- Grants Pass (90 km)
- Powers (95 km)
- Sexton Summit (98 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.