Last spring frost
Apr 10
Frost Dates for Vancouver, OR
First fall frost
Nov 2
Growing season
209 days
Hardiness zone
8b
In an average year around Vancouver, OR, the last spring frost (32°F) is about Apr 10 and the first fall frost is about Nov 2, giving roughly a 209-day growing season. To be safe most years, wait until Mar 17 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 17 | Apr 30 | Apr 15 |
| Freeze (32°F) | May 1 | Apr 10 | Mar 17 |
| Hard (28°F) | Mar 28 | Mar 3 | Feb 2 |
| Severe (24°F) | Feb 28 | Feb 2 | Dec 19 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 17 | May 11 | May 6 | May 3 | Apr 30 | Apr 28 | Apr 26 | Apr 22 | Apr 15 |
| 32°F | May 1 | Apr 25 | Apr 19 | Apr 14 | Apr 10 | Apr 4 | Mar 30 | Mar 24 | Mar 17 |
| 28°F | Mar 28 | Mar 19 | Mar 12 | Mar 7 | Mar 3 | Feb 27 | Feb 23 | Feb 16 | Feb 2 |
| 24°F | Feb 28 | Feb 25 | Feb 18 | Feb 12 | Feb 2 | Jan 24 | Jan 13 | Jan 4 | Dec 19 |
| 20°F | Feb 19 | Feb 6 | Jan 26 | Jan 15 | Jan 6 | Dec 31 | Dec 20 | Dec 11 | Dec 3 |
| 16°F | Feb 8 | Jan 18 | Jan 3 | Dec 31 | Dec 21 | Dec 14 | Dec 11 | Dec 7 | Dec 2 |
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 1 | Oct 16 | Nov 3 |
| Freeze (32°F) | Oct 16 | Nov 2 | Nov 23 |
| Hard (28°F) | Oct 31 | Nov 19 | Dec 15 |
| Severe (24°F) | Nov 9 | Dec 7 | Jan 16 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 1 | Oct 4 | Oct 8 | Oct 12 | Oct 16 | Oct 20 | Oct 23 | Oct 28 | Nov 3 |
| 32°F | Oct 16 | Oct 22 | Oct 26 | Oct 30 | Nov 2 | Nov 6 | Nov 10 | Nov 15 | Nov 23 |
| 28°F | Oct 31 | Nov 5 | Nov 10 | Nov 14 | Nov 19 | Nov 23 | Nov 30 | Dec 6 | Dec 15 |
| 24°F | Nov 9 | Nov 18 | Nov 24 | Dec 1 | Dec 7 | Dec 14 | Dec 24 | Jan 1 | Jan 16 |
| 20°F | Nov 21 | Dec 1 | Dec 6 | Dec 10 | Dec 18 | Dec 26 | Jan 2 | Jan 13 | Feb 5 |
| 16°F | Dec 1 | Dec 5 | Dec 8 | Dec 11 | Dec 16 | Dec 24 | Jan 1 | Jan 12 | Jan 31 |
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: Scappoose Ind Ap, Or, about 6.1 miles away@if(!empty($station['elevation_ft'])), at 55 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 Vancouver, OR?
On average, the last spring frost (32°F) around Vancouver, OR is about Apr 10. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 17.
When is the first frost in the fall?
The first fall frost around Vancouver, OR typically arrives about Nov 2. 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 Apr 10 on average, or Mar 17 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 209 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 97231 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026