Last spring frost
Feb 19
Frost Dates for Yachats, OR
First fall frost
Dec 11
Growing season
303 days
Hardiness zone
9a
In an average year around Yachats, OR, the last spring frost (32°F) is about Feb 19 and the first fall frost is about Dec 11, giving roughly a 303-day growing season. To be safe most years, wait until Dec 18 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) | Apr 27 | Apr 4 | Mar 7 |
| Freeze (32°F) | Mar 23 | Feb 19 | Dec 18 |
| Hard (28°F) | Feb 24 | Jan 9 | Dec 7 |
| Severe (24°F) | Jan 2 | Dec 21 | Dec 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Apr 27 | Apr 19 | Apr 14 | Apr 9 | Apr 4 | Mar 31 | Mar 26 | Mar 20 | Mar 7 |
| 32°F | Mar 23 | Mar 10 | Mar 2 | Feb 25 | Feb 19 | Feb 10 | Jan 27 | Jan 5 | Dec 18 |
| 28°F | Feb 24 | Feb 16 | Feb 5 | Jan 24 | Jan 9 | Dec 31 | Dec 21 | Dec 13 | Dec 7 |
| 24°F | Jan 2 | Dec 31 | Dec 26 | Dec 23 | Dec 21 | Dec 19 | Dec 16 | Dec 11 | Dec 5 |
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 25 | Nov 18 | Dec 13 |
| Freeze (32°F) | Nov 12 | Dec 11 | Feb 13 |
| Hard (28°F) | Dec 1 | Dec 24 | Feb 19 |
| Severe (24°F) | Dec 4 | Dec 20 | Jan 1 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 25 | Nov 1 | Nov 8 | Nov 13 | Nov 18 | Nov 23 | Nov 28 | Dec 4 | Dec 13 |
| 32°F | Nov 12 | Nov 22 | Dec 1 | Dec 6 | Dec 11 | Dec 20 | Dec 30 | Jan 15 | Feb 13 |
| 28°F | Dec 1 | Dec 7 | Dec 11 | Dec 18 | Dec 24 | Jan 1 | Jan 21 | Feb 9 | Feb 19 |
| 24°F | Dec 4 | Dec 9 | Dec 13 | Dec 17 | Dec 20 | Dec 22 | Dec 23 | Dec 29 | Jan 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: Yachats, Or, about 5.9 miles away@if(!empty($station['elevation_ft'])), at 50 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 Yachats, OR?
On average, the last spring frost (32°F) around Yachats, OR is about Feb 19. In cooler years it can run later, so for a safer bet many gardeners wait until Dec 18.
When is the first frost in the fall?
The first fall frost around Yachats, OR typically arrives about Dec 11. 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 Feb 19 on average, or Dec 18 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 303 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 97498 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026