Frost dates for 59761Wisdom, MT
Frost is possible in any month near Wisdom, based on NOAA 1991-2020 records for the Wisdom, MT 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) | — | — | 10 days | 100% |
| Frost / freeze (32°F) | — | — | 22 days | 100% |
| Hard freeze (28°F) | — | — | 48 days | 100% |
Where these dates come from
ZIP code 59761 is matched to the NOAA station Wisdom, MT, 4.1 km away, at 6,060 ft elevation (43 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Wisdom, MT (used) | 6,060 ft | — | — |
| Jackson, MT | 6,480 ft | — | — |
| Sula 14 Ne, MT | 5,155 ft | — | — |
| Gibbonsville #2, ID | 4,480 ft | Jun 1 | Sep 17 |
Frost dates near Wisdom
- Jackson, MT 59736 · last —, first —
- Sula, MT 59871 · last —, first —
- Wise River, MT 59762 · last —, first —
- Gibbonsville, ID 83463 · last —, first —
- Polaris, MT 59746 · last —, first —
- North Fork, ID 83466 · last —, first —
- Carmen, ID 83462 · last May 17, first Sep 24
- Divide, MT 59727 · last —, first —
Frequently asked questions
- When is the last frost in Wisdom, MT?
- Frost is possible in any month at the nearest NOAA station (Wisdom, MT), so there is no reliable average last frost date.
- When is the first frost in Wisdom, MT?
- 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.