Last spring frost
Mar 25
Frost Dates for Reedsport, OR
First fall frost
Nov 24
Growing season
249 days
Hardiness zone
9a
In an average year around Reedsport, OR, the last spring frost (32°F) is about Mar 25 and the first fall frost is about Nov 24, giving roughly a 249-day growing season. To be safe most years, wait until Feb 15 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 19 | Apr 27 | Mar 31 |
| Freeze (32°F) | Apr 27 | Mar 25 | Feb 15 |
| Hard (28°F) | Mar 29 | Feb 17 | Dec 23 |
| Severe (24°F) | Mar 4 | Jan 24 | Dec 12 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 19 | May 10 | May 4 | Apr 30 | Apr 27 | Apr 22 | Apr 16 | Apr 8 | Mar 31 |
| 32°F | Apr 27 | Apr 14 | Apr 4 | Mar 30 | Mar 25 | Mar 15 | Mar 5 | Feb 24 | Feb 15 |
| 28°F | Mar 29 | Mar 14 | Mar 5 | Feb 26 | Feb 17 | Feb 9 | Jan 28 | Jan 9 | Dec 23 |
| 24°F | Mar 4 | Feb 23 | Feb 16 | Feb 4 | Jan 24 | Jan 10 | Jan 2 | Dec 23 | Dec 12 |
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 8 | Oct 30 | Nov 25 |
| Freeze (32°F) | Oct 27 | Nov 24 | Jan 1 |
| Hard (28°F) | Nov 15 | Dec 26 | Feb 19 |
| Severe (24°F) | Dec 7 | Jan 10 | Mar 2 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 8 | Oct 17 | Oct 21 | Oct 25 | Oct 30 | Nov 3 | Nov 8 | Nov 15 | Nov 25 |
| 32°F | Oct 27 | Nov 4 | Nov 10 | Nov 17 | Nov 24 | Dec 1 | Dec 7 | Dec 16 | Jan 1 |
| 28°F | Nov 15 | Nov 28 | Dec 8 | Dec 16 | Dec 26 | Jan 3 | Jan 15 | Feb 2 | Feb 19 |
| 24°F | Dec 7 | Dec 15 | Dec 24 | Jan 2 | Jan 10 | Jan 23 | Feb 4 | Feb 14 | Mar 2 |
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: Winchester Bay Coast Grd, Or, about 13.2 miles away@if(!empty($station['elevation_ft'])), at 8 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 Reedsport, OR?
On average, the last spring frost (32°F) around Reedsport, OR is about Mar 25. In cooler years it can run later, so for a safer bet many gardeners wait until Feb 15.
When is the first frost in the fall?
The first fall frost around Reedsport, OR typically arrives about Nov 24. 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 25 on average, or Feb 15 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 249 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 97473 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026