Frost dates for Vancouver 4 NNE, WA
At Vancouver 4 NNE, the median last spring frost (32°F) is Apr 26 and the median first fall frost is Oct 18, for a typical growing season of 177 days. For a 90% chance that the last frost has passed, wait until May 10. Nearby ZIP codes are in USDA hardiness zone 8b.
- Apr 26Last spring frost (median)50% chance of 32°F after this date
- May 10Safer planting date10% chance of 32°F after this date
- Oct 18First fall frost (median)50% chance of 32°F by this date
- 177 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 28 | May 10 | May 30 |
| 32°F | Apr 7 | Apr 26 | May 10 |
| 28°F | Mar 8 | Mar 30 | Apr 20 |
| 24°F | Feb 1 | Feb 28 | Mar 26 |
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 14 | Oct 1 | Oct 22 |
| 32°F | Oct 1 | Oct 18 | Nov 8 |
| 28°F | Oct 16 | Nov 4 | Nov 28 |
| 24°F | Oct 28 | Nov 26 | Dec 23 |
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 | 117 days | 143 days | 167 days |
| 32°F | 153 days | 177 days | 206 days |
| 28°F | 188 days | 221 days | 252 days |
| 24°F | 231 days | 269 days | 308 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 98665 | 8b | 15 to 20°F | 0 km |
| 98663 | 8b | 15 to 20°F | 3 km |
| 98685 | 8b | 15 to 20°F | 5 km |
| 98686 | 8b | 15 to 20°F | 6 km |
| 98660 | 8b | 15 to 20°F | 6 km |
| 98662 | 8b | 15 to 20°F | 6 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 USC00458773, at 45.6778, -122.6511, elevation 64 m (210 ft).
- Data quality: Standard (24+ years of data), 29 years of freeze data.
- Average days per year at or below 32°F: 66.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Vancouver Pearson Airport (6 km)
- Battle Ground (14 km)
- Skamania Fish Hatchery (34 km)
- Cougar 6 E (55 km)
- Longview (56 km)
- Carson Fish Hatchery (57 km)
- Toledo FAA Airport (90 km)
- Mayfield Power Plant (92 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.