Last spring frost
Mar 12
Frost Dates for Depoe Bay, OR
First fall frost
Dec 10
Growing season
271 days
Hardiness zone
9a
In an average year around Depoe Bay, OR, the last spring frost (32°F) is about Mar 12 and the first fall frost is about Dec 10, giving roughly a 271-day growing season. To be safe most years, wait until Jan 24 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 20 | Mar 25 |
| Freeze (32°F) | Apr 16 | Mar 12 | Jan 24 |
| Hard (28°F) | Mar 5 | Jan 28 | Dec 7 |
| Severe (24°F) | Feb 21 | Jan 4 | Dec 5 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 8 | May 2 | Apr 29 | Apr 26 | Apr 20 | Apr 15 | Apr 10 | Apr 3 | Mar 25 |
| 32°F | Apr 16 | Apr 4 | Mar 28 | Mar 21 | Mar 12 | Mar 1 | Feb 23 | Feb 13 | Jan 24 |
| 28°F | Mar 5 | Feb 25 | Feb 18 | Feb 6 | Jan 28 | Jan 17 | Jan 6 | Dec 24 | Dec 7 |
| 24°F | Feb 21 | Feb 13 | Jan 25 | Jan 14 | Jan 4 | Dec 31 | Dec 20 | 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 13 | Nov 9 | Dec 9 |
| Freeze (32°F) | Nov 7 | Dec 10 | Feb 8 |
| Hard (28°F) | Nov 24 | Dec 28 | Feb 20 |
| Severe (24°F) | Dec 2 | Dec 29 | Feb 18 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 13 | Oct 23 | Oct 30 | Nov 3 | Nov 9 | Nov 14 | Nov 21 | Nov 29 | Dec 9 |
| 32°F | Nov 7 | Nov 17 | Nov 26 | Dec 3 | Dec 10 | Dec 21 | Jan 1 | Jan 14 | Feb 8 |
| 28°F | Nov 24 | Dec 1 | Dec 9 | Dec 17 | Dec 28 | Jan 4 | Jan 18 | Feb 1 | Feb 20 |
| 24°F | Dec 2 | Dec 7 | Dec 12 | Dec 21 | Dec 29 | Jan 5 | Jan 18 | Feb 1 | Feb 18 |
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: Newport 3N, Or, about 9.4 miles away@if(!empty($station['elevation_ft'])), at 220 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 Depoe Bay, OR?
On average, the last spring frost (32°F) around Depoe Bay, OR is about Mar 12. In cooler years it can run later, so for a safer bet many gardeners wait until Jan 24.
When is the first frost in the fall?
The first fall frost around Depoe Bay, OR typically arrives about Dec 10. 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 12 on average, or Jan 24 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 271 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 97341 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026