Frost dates for Yakima #2, WA
At Yakima #2, the median last spring frost (32°F) is Apr 8 and the median first fall frost is Oct 23, for a typical growing season of 196 days. For a 90% chance that the last frost has passed, wait until Apr 28. Nearby ZIP codes are in USDA hardiness zone 7a.
- Apr 8Last spring frost (median)50% chance of 32°F after this date
- Apr 28Safer planting date10% chance of 32°F after this date
- Oct 23First fall frost (median)50% chance of 32°F by this date
- 196 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 14 | Apr 28 | May 12 |
| 32°F | Mar 23 | Apr 8 | Apr 28 |
| 28°F | Feb 28 | Mar 16 | Apr 6 |
| 24°F | Feb 4 | Feb 25 | Mar 17 |
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 1 | Oct 12 | Oct 25 |
| 32°F | Oct 9 | Oct 23 | Nov 5 |
| 28°F | Oct 20 | Nov 3 | Nov 22 |
| 24°F | Oct 30 | Nov 17 | Dec 6 |
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 | 149 days | 167 days | 185 days |
| 32°F | 172 days | 196 days | 218 days |
| 28°F | 204 days | 229 days | 256 days |
| 24°F | 234 days | 264 days | 293 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 |
|---|---|---|---|
| 98902 | 7a | 0 to 5°F | 3 km |
| 98923 | 7a | 0 to 5°F | 14 km |
| 98908 | 7a | 0 to 5°F | 17 km |
| 98947 | 7a | 0 to 5°F | 22 km |
| 98903 | 7a | 0 to 5°F | 29 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 USC00459463, at 46.5861, -120.5681, elevation 348 m (1,142 ft).
- Data quality: Representative (10+ years), 11 years of freeze data.
- Average days per year at or below 32°F: 109.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Yakima Air Terminal (3 km)
- Selah 2 NE (11 km)
- Wapato (20 km)
- Moxee City 10 E (32 km)
- Ellensburg (43 km)
- Sunnyside #2 (49 km)
- Ellensburg Bowers Field (50 km)
- Priest Rapids Dam (51 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.