Last spring frost
Mar 27
Frost Dates for Dixie, WA
First fall frost
Oct 31
Growing season
219 days
Hardiness zone
7a
In an average year around Dixie, WA, the last spring frost (32°F) is about Mar 27 and the first fall frost is about Oct 31, giving roughly a 219-day growing season. To be safe most years, wait until Mar 3 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) | May 8 | Apr 21 | Apr 2 |
| Freeze (32°F) | Apr 22 | Mar 27 | Mar 3 |
| Hard (28°F) | Mar 27 | Mar 4 | Feb 9 |
| Severe (24°F) | Mar 10 | Feb 18 | Jan 10 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 8 | May 3 | Apr 29 | Apr 25 | Apr 21 | Apr 17 | Apr 13 | Apr 9 | Apr 2 |
| 32°F | Apr 22 | Apr 13 | Apr 5 | Mar 31 | Mar 27 | Mar 22 | Mar 16 | Mar 10 | Mar 3 |
| 28°F | Mar 27 | Mar 19 | Mar 12 | Mar 7 | Mar 4 | Feb 28 | Feb 25 | Feb 19 | Feb 9 |
| 24°F | Mar 10 | Mar 3 | Feb 28 | Feb 23 | Feb 18 | Feb 12 | Feb 5 | Jan 25 | Jan 10 |
| 20°F | Mar 3 | Feb 26 | Feb 18 | Feb 10 | Feb 1 | Jan 24 | Jan 14 | Jan 5 | Dec 25 |
| 16°F | Feb 28 | Feb 19 | Feb 9 | Jan 31 | Jan 23 | Jan 12 | Jan 6 | Dec 30 | Dec 13 |
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) | Oct 4 | Oct 19 | Nov 2 |
| Freeze (32°F) | Oct 15 | Oct 31 | Nov 17 |
| Hard (28°F) | Oct 25 | Nov 14 | Dec 4 |
| Severe (24°F) | Nov 3 | Nov 28 | Dec 21 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 4 | Oct 9 | Oct 13 | Oct 16 | Oct 19 | Oct 22 | Oct 25 | Oct 29 | Nov 2 |
| 32°F | Oct 15 | Oct 20 | Oct 24 | Oct 28 | Oct 31 | Nov 3 | Nov 6 | Nov 11 | Nov 17 |
| 28°F | Oct 25 | Nov 1 | Nov 5 | Nov 9 | Nov 14 | Nov 18 | Nov 23 | Nov 27 | Dec 4 |
| 24°F | Nov 3 | Nov 11 | Nov 18 | Nov 24 | Nov 28 | Dec 2 | Dec 6 | Dec 12 | Dec 21 |
| 20°F | Nov 12 | Nov 22 | Nov 28 | Dec 2 | Dec 8 | Dec 12 | Dec 20 | Jan 1 | Jan 12 |
| 16°F | Nov 24 | Dec 1 | Dec 8 | Dec 14 | Dec 21 | Dec 29 | Jan 2 | Jan 12 | Feb 1 |
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: Walla Walla Rgnl Ap, Wa, about 7.4 miles away@if(!empty($station['elevation_ft'])), at 1,166 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 Dixie, WA?
On average, the last spring frost (32°F) around Dixie, WA is about Mar 27. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 3.
When is the first frost in the fall?
The first fall frost around Dixie, WA typically arrives about Oct 31. 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 Mar 27 on average, or Mar 3 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 219 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 99329 Planting calendar → Washington frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026