Frost dates for Newport, OR
At Newport, the median last spring frost (32°F) is Mar 21 and the median first fall frost is Nov 27, for a typical growing season of 252 days. For a 90% chance that the last frost has passed, wait until Apr 12. Nearby ZIP codes are in USDA hardiness zones 9a to 9b.
- Mar 21Last spring frost (median)50% chance of 32°F after this date
- Apr 12Safer planting date10% chance of 32°F after this date
- Nov 27First fall frost (median)50% chance of 32°F by this date
- 252 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 30 | Apr 20 | May 5 |
| 32°F | Feb 11 | Mar 21 | Apr 12 |
| 28°F | Dec 12 | Feb 6 | Mar 11 |
| 24°F | Dec 6 | Jan 4 | Feb 23 |
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 11 | Nov 1 | Nov 26 |
| 32°F | Nov 1 | Nov 27 | Dec 28 |
| 28°F | Nov 15 | Dec 22 | Feb 18 |
| 24°F | Dec 1 | Dec 28 | Feb 20 |
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 | 167 days | 195 days | 224 days |
| 32°F | 215 days | 252 days | 297 days |
| 28°F | 279 days | 325 days | 365 days |
| 24°F | 333 days | 365 days | 365 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 84% |
| 24°F | 34% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 97365 | 9b | 25 to 30°F | 4 km |
| 97366 | 9b | 25 to 30°F | 7 km |
| 97369 | 9a | 20 to 25°F | 13 km |
| 97391 | 9a | 20 to 25°F | 15 km |
| 97376 | 9a | 20 to 25°F | 17 km |
| 97380 | 9a | 20 to 25°F | 19 km |
| 97341 | 9a | 20 to 25°F | 20 km |
| 97357 | 9a | 20 to 25°F | 22 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 USW00024285, at 44.6431, -124.0556, elevation 37 m (122 ft).
- Data quality: Representative (10+ years), 12 years of freeze data.
- Average days per year at or below 32°F: 13.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Newport 1 SE (2 km)
- Newport 3n (4 km)
- Yachats (35 km)
- Alsea Fh (fall Creek) (36 km)
- Otis 2 NE (45 km)
- Laurel Mountain (49 km)
- Corvallis Water Bureau (50 km)
- Falls City 2 SSW (52 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.