Growing season
65 days
Frost Dates for Camp Sherman, OR
Hardiness zone
7a
Frost normals for this location are limited (the nearest long-term weather station may not report all thresholds). The available data is shown below.
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%) |
|---|---|---|---|
| Hard (28°F) | Jun 27 | May 27 | May 2 |
| Severe (24°F) | May 22 | Apr 30 | Apr 8 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 28°F | Jun 27 | Jun 18 | Jun 9 | Jun 2 | May 27 | May 20 | May 14 | May 8 | May 2 |
| 24°F | May 22 | May 11 | May 5 | May 2 | Apr 30 | Apr 26 | Apr 22 | Apr 17 | Apr 8 |
| 20°F | Apr 29 | Apr 22 | Apr 18 | Apr 12 | Apr 8 | Apr 4 | Mar 31 | Mar 25 | Mar 15 |
| 16°F | Apr 12 | Apr 5 | Mar 31 | Mar 25 | Mar 19 | Mar 13 | Mar 6 | Feb 28 | Feb 18 |
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%) |
|---|---|---|---|
| Hard (28°F) | Sep 3 | Sep 29 | Oct 21 |
| Severe (24°F) | Sep 27 | Oct 22 | Nov 12 |
Show full probability table (all thresholds & percentiles)
| °F | 10% | 20% | 30% | 40% | 50% | 60% | 70% | 80% | 90% |
|---|---|---|---|---|---|---|---|---|---|
| 28°F | Sep 3 | Sep 10 | Sep 16 | Sep 23 | Sep 29 | Oct 3 | Oct 7 | Oct 13 | Oct 21 |
| 24°F | Sep 27 | Oct 4 | Oct 11 | Oct 17 | Oct 22 | Oct 26 | Oct 30 | Nov 4 | Nov 12 |
| 20°F | Oct 18 | Oct 24 | Oct 31 | Nov 5 | Nov 10 | Nov 15 | Nov 19 | Nov 24 | Nov 30 |
| 16°F | Nov 1 | Nov 10 | Nov 15 | Nov 20 | Nov 24 | Nov 28 | Dec 2 | Dec 7 | Dec 15 |
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: Santiam Junction, Or, about 8.9 miles away@if(!empty($station['elevation_ft'])), at 3,750 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
How long is the growing season here?
The frost-free growing season (between the last spring and first fall 32°F frost) is about 65 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 97759 Planting calendar → Oregon frost dates →
Data source: NOAA 1991–2020 Climate Normals · Page updated Aug 4, 2026