Frost dates for Everett, WA
At Everett, the median last spring frost (32°F) is Mar 24 and the median first fall frost is Nov 2, for a typical growing season of 223 days. For a 90% chance that the last frost has passed, wait until Apr 11. Nearby ZIP codes are in USDA hardiness zone 8b.
- Mar 24Last spring frost (median)50% chance of 32°F after this date
- Apr 11Safer planting date10% chance of 32°F after this date
- Nov 2First fall frost (median)50% chance of 32°F by this date
- 223 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 31 | Apr 20 | May 8 |
| 32°F | Mar 4 | Mar 24 | Apr 11 |
| 28°F | Jan 31 | Mar 1 | Mar 20 |
| 24°F | Dec 15 | Jan 31 | Feb 28 |
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 18 | Nov 4 |
| 32°F | Oct 16 | Nov 2 | Nov 23 |
| 28°F | Oct 29 | Nov 21 | Dec 14 |
| 24°F | Nov 12 | Dec 5 | Jan 11 |
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 | 154 days | 183 days | 209 days |
| 32°F | 197 days | 223 days | 249 days |
| 28°F | 234 days | 265 days | 303 days |
| 24°F | 272 days | 315 days | 355 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 94% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 98201 | 8b | 15 to 20°F | 2 km |
| 98207 | 8b | 15 to 20°F | 3 km |
| 98203 | 8b | 15 to 20°F | 5 km |
| 98270 | 8b | 15 to 20°F | 10 km |
| 98258 | 8b | 15 to 20°F | 11 km |
| 98271 | 8b | 15 to 20°F | 13 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 USC00452675, at 47.9753, -122.1950, elevation 18 m (60 ft).
- Data quality: Standard (24+ years of data), 27 years of freeze data.
- Average days per year at or below 32°F: 51.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Everett Snohomish Airport (10 km)
- Monroe (21 km)
- Arlington (26 km)
- Seattle Sand Point Wsfo (32 km)
- Startup 1 E (38 km)
- Port Townsend (45 km)
- Coupeville 1 S (45 km)
- Tolt S Fk Rsvr (49 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.