Frost dates for Longview, WA
At Longview, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Nov 5, for a typical growing season of 210 days. For a 90% chance that the last frost has passed, wait until May 2. Nearby ZIP codes are in USDA hardiness zone 8b.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- May 2Safer planting date10% chance of 32°F after this date
- Nov 5First fall frost (median)50% chance of 32°F by this date
- 210 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 15 | May 3 | May 24 |
| 32°F | Mar 11 | Apr 8 | May 2 |
| 28°F | Feb 6 | Mar 6 | Apr 4 |
| 24°F | Dec 14 | Feb 10 | Mar 3 |
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 10 |
| 32°F | Oct 17 | Nov 5 | Nov 28 |
| 28°F | Oct 31 | Nov 24 | Dec 20 |
| 24°F | Nov 13 | Dec 11 | Jan 29 |
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 | 142 days | 169 days | 196 days |
| 32°F | 177 days | 210 days | 244 days |
| 28°F | 223 days | 262 days | 298 days |
| 24°F | 272 days | 315 days | 359 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 93% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 98609 | 8b | 15 to 20°F | 10 km |
| 98626 | 8b | 15 to 20°F | 11 km |
| 98632 | 8b | 15 to 20°F | 13 km |
| 97048 | 8b | 15 to 20°F | 16 km |
| 98611 | 8b | 15 to 20°F | 17 km |
| 98625 | 8b | 15 to 20°F | 27 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 USC00454769, at 46.1506, -122.9164, elevation 4 m (12 ft).
- Data quality: Standard (24+ years of data), 25 years of freeze data.
- Average days per year at or below 32°F: 41.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Toledo FAA Airport (38 km)
- Mayfield Power Plant (46 km)
- Battle Ground (52 km)
- Cougar 6 E (56 km)
- Grays River Hatchery (56 km)
- Vancouver 4 NNE (56 km)
- Vancouver Pearson Airport (62 km)
- Centralia (63 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.