Last spring frost
Apr 5
Frost Dates for Lafayette, OR
First fall frost
Nov 7
Growing season
216 days
Hardiness zone
8b
In an average year around Lafayette, OR, the last spring frost (32°F) is about Apr 5 and the first fall frost is about Nov 7, giving roughly a 216-day growing season. To be safe most years, wait until Mar 5 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 15 | Apr 29 | Apr 12 |
| Freeze (32°F) | Apr 27 | Apr 5 | Mar 5 |
| Hard (28°F) | Mar 20 | Feb 20 | Jan 3 |
| Severe (24°F) | Feb 20 | Jan 13 | Dec 7 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | May 15 | May 8 | May 4 | May 1 | Apr 29 | Apr 26 | Apr 23 | Apr 18 | Apr 12 |
| 32°F | Apr 27 | Apr 19 | Apr 15 | Apr 10 | Apr 5 | Mar 31 | Mar 25 | Mar 17 | Mar 5 |
| 28°F | Mar 20 | Mar 10 | Mar 2 | Feb 25 | Feb 20 | Feb 14 | Feb 3 | Jan 23 | Jan 3 |
| 24°F | Feb 20 | Feb 12 | Feb 1 | Jan 23 | Jan 13 | Jan 6 | Dec 31 | Dec 20 | Dec 7 |
| 20°F | Feb 7 | Jan 23 | Jan 12 | Jan 4 | Dec 31 | Dec 23 | Dec 16 | Dec 9 | Dec 1 |
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 5 | Oct 22 | Nov 9 |
| Freeze (32°F) | Oct 20 | Nov 7 | Dec 1 |
| Hard (28°F) | Nov 5 | Nov 28 | Jan 2 |
| Severe (24°F) | Nov 18 | Dec 16 | Jan 31 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 36°F | Oct 5 | Oct 10 | Oct 15 | Oct 18 | Oct 22 | Oct 25 | Oct 29 | Nov 2 | Nov 9 |
| 32°F | Oct 20 | Oct 26 | Oct 30 | Nov 3 | Nov 7 | Nov 11 | Nov 16 | Nov 22 | Dec 1 |
| 28°F | Nov 5 | Nov 13 | Nov 17 | Nov 23 | Nov 28 | Dec 2 | Dec 9 | Dec 19 | Jan 2 |
| 24°F | Nov 18 | Nov 28 | Dec 2 | Dec 8 | Dec 16 | Dec 24 | Jan 1 | Jan 12 | Jan 31 |
| 20°F | Nov 28 | Dec 3 | Dec 8 | Dec 12 | Dec 20 | Dec 29 | Jan 4 | Jan 14 | 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: Mc Minnville, Or, about 3 miles away@if(!empty($station['elevation_ft'])), at 155 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 Lafayette, OR?
On average, the last spring frost (32°F) around Lafayette, OR is about Apr 5. In cooler years it can run later, so for a safer bet many gardeners wait until Mar 5.
When is the first frost in the fall?
The first fall frost around Lafayette, OR typically arrives about Nov 7. 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 5 on average, or Mar 5 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 216 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 97127 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026