Frost dates for 97711Ashwood, OR
Frost is possible in any month near Ashwood, based on NOAA 1991-2020 records for the Grizzly, OR station.
Frost is possible in any month. Even summer nights can drop to freezing at this station, so protect tender plants whenever cold nights are forecast.
Frost risk by date
NOAA reports frost dates as probabilities. The middle date is the average (a 50% chance). For spring, the 10% date is a safer planting date: frost after it happens in about 1 year in 10. Light frost (36°F) can damage tender plants; a hard freeze (28°F) kills most annuals.
| Temperature | Last spring: 90% / 50% / 10% chance | First fall: 10% / 50% / 90% chance | Growing season (50%) | Years with at least one |
|---|---|---|---|---|
| Light frost (36°F) | — | — | 20 days | 100% |
| Frost / freeze (32°F) | — | — | 43 days | 100% |
| Hard freeze (28°F) | — | — | 81 days | 100% |
Where these dates come from
ZIP code 97711 is matched to the NOAA station Grizzly, OR, 28.4 km away, at 3,635 ft elevation (210 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Grizzly, OR (used) | 3,635 ft | — | — |
| Antelope 6 Ssw, OR | 3,030 ft | May 22 | Oct 3 |
| Madras, OR | 2,230 ft | — | — |
| Madras 2 N, OR | 2,443 ft | May 19 | Oct 4 |
Frost dates near Ashwood
- Antelope, OR 97001 · last May 22, first Oct 3
- Shaniko, OR 97057 · last May 22, first Oct 3
- Madras, OR 97741 · last —, first —
- Kent, OR 97033 · last May 22, first Oct 3
- Warm Springs, OR 97761 · last May 5, first Oct 7
- Prineville, OR 97754 · last Jun 1, first Sep 22
- Mitchell, OR 97750 · last May 22, first Oct 4
- Culver, OR 97734 · last Jun 9, first Sep 14
Frequently asked questions
- When is the last frost in Ashwood, OR?
- Frost is possible in any month at the nearest NOAA station (Grizzly, OR), so there is no reliable average last frost date.
- When is the first frost in Ashwood, OR?
- Frost is possible in any month at the nearest NOAA station.
- Are these frost dates a forecast?
- No. They are 30-year averages and probabilities from NOAA weather station records. Use them to plan, then watch your local forecast before planting tender crops or leaving them uncovered.