Last spring frost
May 19
Frost Dates for Centerville, WA
First fall frost
Sep 25
Growing season
126 days
Hardiness zone
7b
In an average year around Centerville, WA, the last spring frost (32°F) is about May 19 and the first fall frost is about Sep 25, giving roughly a 126-day growing season. To be safe most years, wait until May 2 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) | Jul 5 | Jun 11 | May 23 |
| Freeze (32°F) | Jun 9 | May 19 | May 2 |
| Hard (28°F) | May 16 | May 1 | Apr 17 |
| Severe (24°F) | May 2 | Apr 13 | Mar 20 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Jul 5 | Jun 26 | Jun 21 | Jun 16 | Jun 11 | Jun 7 | Jun 3 | May 30 | May 23 |
| 32°F | Jun 9 | Jun 1 | May 28 | May 23 | May 19 | May 15 | May 11 | May 7 | May 2 |
| 28°F | May 16 | May 11 | May 7 | May 4 | May 1 | Apr 29 | Apr 26 | Apr 23 | Apr 17 |
| 24°F | May 2 | Apr 26 | Apr 22 | Apr 17 | Apr 13 | Apr 9 | Apr 4 | Mar 30 | Mar 20 |
| 20°F | Apr 9 | Mar 30 | Mar 23 | Mar 15 | Mar 11 | Mar 7 | Feb 28 | Feb 25 | Feb 17 |
| 16°F | Mar 10 | Mar 3 | Feb 28 | Feb 24 | Feb 17 | Feb 11 | Feb 3 | Jan 23 | Jan 8 |
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) | Aug 27 | Sep 9 | Sep 26 |
| Freeze (32°F) | Sep 8 | Sep 25 | Oct 9 |
| Hard (28°F) | Sep 22 | Oct 7 | Oct 24 |
| Severe (24°F) | Oct 4 | Oct 22 | Nov 9 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Aug 27 | Sep 1 | Sep 4 | Sep 7 | Sep 9 | Sep 12 | Sep 17 | Sep 21 | Sep 26 |
| 32°F | Sep 8 | Sep 14 | Sep 18 | Sep 22 | Sep 25 | Sep 28 | Oct 1 | Oct 5 | Oct 9 |
| 28°F | Sep 22 | Sep 28 | Oct 1 | Oct 4 | Oct 7 | Oct 10 | Oct 14 | Oct 18 | Oct 24 |
| 24°F | Oct 4 | Oct 10 | Oct 15 | Oct 19 | Oct 22 | Oct 25 | Oct 29 | Nov 2 | Nov 9 |
| 20°F | Oct 19 | Oct 24 | Oct 29 | Nov 1 | Nov 3 | Nov 7 | Nov 11 | Nov 17 | Nov 25 |
| 16°F | Oct 27 | Nov 2 | Nov 7 | Nov 13 | Nov 20 | Nov 25 | Dec 1 | Dec 8 | Dec 20 |
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: Goldendale, Wa, about 7.3 miles away@if(!empty($station['elevation_ft'])), at 1,640 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 Centerville, WA?
On average, the last spring frost (32°F) around Centerville, WA is about May 19. In cooler years it can run later, so for a safer bet many gardeners wait until May 2.
When is the first frost in the fall?
The first fall frost around Centerville, WA typically arrives about Sep 25. 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 May 19 on average, or May 2 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 126 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 98613 Planting calendar → Washington frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026