Last spring frost
May 29
Frost Dates for Crane, OR
First fall frost
Sep 18
Growing season
113 days
Hardiness zone
6a
In an average year around Crane, OR, the last spring frost (32°F) is about May 29 and the first fall frost is about Sep 18, giving roughly a 113-day growing season. To be safe most years, wait until May 6 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%) |
|---|---|---|---|
| Freeze (32°F) | Jun 17 | May 29 | May 6 |
| Hard (28°F) | May 24 | May 3 | Apr 20 |
| Severe (24°F) | May 5 | Apr 20 | Apr 1 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 32°F | Jun 17 | Jun 12 | Jun 7 | Jun 3 | May 29 | May 22 | May 17 | May 12 | May 6 |
| 28°F | May 24 | May 15 | May 10 | May 7 | May 3 | Apr 30 | Apr 28 | Apr 24 | Apr 20 |
| 24°F | May 5 | Apr 30 | Apr 27 | Apr 24 | Apr 20 | Apr 17 | Apr 12 | Apr 8 | Apr 1 |
| 20°F | Apr 22 | Apr 17 | Apr 11 | Apr 6 | Apr 2 | Mar 28 | Mar 21 | Mar 15 | Mar 7 |
| 16°F | Apr 4 | Mar 23 | Mar 16 | Mar 10 | Mar 4 | Mar 1 | Feb 25 | Feb 19 | Feb 13 |
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%) |
|---|---|---|---|
| Freeze (32°F) | Sep 2 | Sep 18 | Oct 3 |
| Hard (28°F) | Sep 13 | Oct 1 | Oct 18 |
| Severe (24°F) | Sep 27 | Oct 16 | Oct 31 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 32°F | Sep 2 | Sep 7 | Sep 11 | Sep 15 | Sep 18 | Sep 22 | Sep 24 | Sep 29 | Oct 3 |
| 28°F | Sep 13 | Sep 21 | Sep 25 | Sep 28 | Oct 1 | Oct 5 | Oct 8 | Oct 12 | Oct 18 |
| 24°F | Sep 27 | Oct 4 | Oct 8 | Oct 12 | Oct 16 | Oct 19 | Oct 22 | Oct 26 | Oct 31 |
| 20°F | Oct 11 | Oct 17 | Oct 21 | Oct 25 | Oct 28 | Nov 1 | Nov 4 | Nov 9 | Nov 15 |
| 16°F | Oct 22 | Oct 28 | Nov 1 | Nov 4 | Nov 9 | Nov 12 | Nov 18 | Nov 23 | Nov 30 |
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: Malheur Refuge Hq, Or, about 18.8 miles away@if(!empty($station['elevation_ft'])), at 4,118 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 Crane, OR?
On average, the last spring frost (32°F) around Crane, OR is about May 29. In cooler years it can run later, so for a safer bet many gardeners wait until May 6.
When is the first frost in the fall?
The first fall frost around Crane, OR typically arrives about Sep 18. 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 May 29 on average, or May 6 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 113 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 97722 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026