Frost dates for 83227Clayton, ID
Frost is possible in any month near Clayton, based on NOAA 1991-2020 records for the Stanley, ID 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) | — | — | 6 days | 100% |
| Frost / freeze (32°F) | — | — | 13 days | 100% |
| Hard freeze (28°F) | — | — | 28 days | 100% |
Where these dates come from
ZIP code 83227 is matched to the NOAA station Stanley, ID, 42.2 km away, at 6,249 ft elevation (209 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Stanley, ID (used) | 6,249 ft | — | — |
| Challis Ap, ID | 5,033 ft | May 14 | Sep 25 |
| Stanley Rs, ID | 6,495 ft | — | — |
| May 2Sse, ID | 5,050 ft | Jun 12 | Sep 6 |
Frost dates near Clayton
- Challis, ID 83226 · last May 14, first Sep 25
- Stanley, ID 83278 · last —, first —
- May, ID 83253 · last Jun 12, first Sep 6
- Ellis, ID 83235 · last Jun 12, first Sep 6
- Sun Valley, ID 83353 · last —, first —
- Ketchum, ID 83340 · last —, first —
- Mackay, ID 83251 · last Jun 1, first Sep 20
- Atlanta, ID 83601 · last Jun 16, first Sep 6
Frequently asked questions
- When is the last frost in Clayton, ID?
- Frost is possible in any month at the nearest NOAA station (Stanley, ID), so there is no reliable average last frost date.
- When is the first frost in Clayton, ID?
- 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.