Last spring frost
Apr 23
Frost Dates for Skokomish, WA
First fall frost
Oct 20
Growing season
183 days
Hardiness zone
8b
In an average year around Skokomish, WA, the last spring frost (32°F) is about Apr 23 and the first fall frost is about Oct 20, giving roughly a 183-day growing season. To be safe most years, wait until Apr 1 before setting out tender plants.
Last spring frost
Dates the last frost of spring typically ends. Plant tender crops after the risk has passed for your comfort level.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Jun 2 | May 10 | Apr 26 |
| Freeze (32°F) | May 7 | Apr 23 | Apr 1 |
| Hard (28°F) | Apr 19 | Mar 23 | Feb 22 |
| Severe (24°F) | Mar 16 | Feb 15 | Dec 15 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Jun 2 | May 25 | May 19 | May 14 | May 10 | May 6 | May 3 | Apr 30 | Apr 26 |
| 32°F | May 7 | May 2 | Apr 29 | Apr 27 | Apr 23 | Apr 19 | Apr 14 | Apr 7 | Apr 1 |
| 28°F | Apr 19 | Apr 9 | Apr 2 | Mar 28 | Mar 23 | Mar 16 | Mar 10 | Feb 28 | Feb 22 |
| 24°F | Mar 16 | Mar 4 | Feb 28 | Feb 22 | Feb 15 | Feb 8 | Jan 24 | Jan 3 | Dec 15 |
| 20°F | Feb 25 | Feb 17 | Feb 10 | Jan 31 | Jan 14 | Dec 31 | Dec 18 | Dec 9 | Dec 1 |
| 16°F | Feb 18 | Feb 4 | Jan 22 | Jan 1 | Dec 27 | Dec 19 | Dec 12 | Dec 6 | Dec 1 |
First fall frost
Dates the first frost of fall typically arrives. Count back by a crop's days-to-maturity to know your planting cutoff.
| Frost intensity | Early (10%) | Average (50%) | Late (90%) |
|---|---|---|---|
| Light (36°F) | Sep 15 | Oct 2 | Oct 21 |
| Freeze (32°F) | Oct 1 | Oct 20 | Nov 10 |
| Hard (28°F) | Oct 17 | Nov 10 | Dec 12 |
| Severe (24°F) | Nov 5 | Dec 3 | Jan 27 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Sep 15 | Sep 21 | Sep 25 | Sep 30 | Oct 2 | Oct 5 | Oct 9 | Oct 15 | Oct 21 |
| 32°F | Oct 1 | Oct 5 | Oct 10 | Oct 15 | Oct 20 | Oct 24 | Oct 27 | Nov 1 | Nov 10 |
| 28°F | Oct 17 | Oct 24 | Oct 30 | Nov 5 | Nov 10 | Nov 16 | Nov 22 | Nov 29 | Dec 12 |
| 24°F | Nov 5 | Nov 13 | Nov 22 | Nov 28 | Dec 3 | Dec 10 | Dec 19 | Dec 31 | Jan 27 |
| 20°F | Nov 22 | Dec 1 | Dec 6 | Dec 13 | Dec 21 | Dec 31 | Jan 13 | Feb 1 | Feb 16 |
| 16°F | Nov 30 | Dec 5 | Dec 9 | Dec 15 | Dec 21 | Dec 29 | Jan 1 | Jan 29 | Feb 16 |
Growing season is measured at 32°F with about 50% probability. Hardiness zone from the 2023 USDA map; frost normals from NOAA 1991-2020.
Where this data comes from
@endif These dates are computed from the nearest official weather station with long-term records: Matlock 8 S, Wa, about 11.4 miles away@if(!empty($station['elevation_ft'])), at 110 ft elevation. The further the station and the greater the elevation difference from your yard, the more your local frost timing can vary.
How we calculate these dates
Frost and freeze dates come from the NOAA 1991–2020 U.S. Climate Normals, the National Oceanic and Atmospheric Administration's 30-year averages for each weather station. A date shown at the 50% level is the median: in half of years the frost falls on or before it. The 10% and 90% columns show the early and late ends of the range, so you can plant on the odds you're comfortable with. These are long-term averages, not a forecast for this year - always check your local outlook before planting.
Source: NOAA National Centers for Environmental Information, 1991–2020 Climate Normals (public domain). Harman is not affiliated with or endorsed by NOAA.
Frequently asked questions
When is the last frost in Skokomish, WA?
On average, the last spring frost (32°F) around Skokomish, WA is about Apr 23. In cooler years it can run later, so for a safer bet many gardeners wait until Apr 1.
When is the first frost in the fall?
The first fall frost around Skokomish, WA typically arrives about Oct 20. Count back by a crop's days to maturity to find the latest date you can plant it.
When can I plant tomatoes and other tender crops?
Tender crops like tomatoes, peppers and basil are damaged by frost, so wait until the last spring frost has passed - around Apr 23 on average, or Apr 1 to be safe most years.
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 183 days in a typical year.
Are these dates a forecast for this year?
No. They are 30-year averages from the NOAA 1991–2020 Climate Normals, not a prediction for the current year. Use them for planning and always check your local weather forecast before planting or protecting crops.
Local weather for 98560 Planting calendar → Washington frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026