Frost dates for 59868Seeley Lake, MT
Frost is possible in any month near Seeley Lake, based on NOAA 1991-2020 records for the Seeley Lake Rs, 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) | — | — | 38 days | 100% |
| Frost / freeze (32°F) | — | — | 74 days | 100% |
| Hard freeze (28°F) | May 9 · May 23 · Jun 11 | Sep 4 · Sep 22 · Oct 4 | 118 days | 100% |
Where these dates come from
ZIP code 59868 is matched to the NOAA station Seeley Lake Rs, MT, 4.9 km away, at 4,100 ft elevation (81 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Seeley Lake Rs, MT (used) | 4,100 ft | — | — |
| Lindbergh Lake, MT | 4,320 ft | May 20 | Sep 22 |
| Potomac, MT | 3,690 ft | — | — |
| Ovando 9 Sse, MT | 4,325 ft | — | — |
Frost dates near Seeley Lake
- Ovando, MT 59854 · last —, first —
- Condon, MT 59826 · last May 20, first Sep 22
- Bonner, MT 59823 · last May 10, first Oct 1
- Arlee, MT 59821 · last May 12, first Oct 2
- Milltown, MT 59851 · last May 10, first Oct 1
- Missoula, MT 59807 · last May 10, first Oct 1
- Saint Ignatius, MT 59865 · last May 12, first Oct 2
- Clinton, MT 59825 · last —, first —
Frequently asked questions
- When is the last frost in Seeley Lake, MT?
- Frost is possible in any month at the nearest NOAA station (Seeley Lake Rs, MT), so there is no reliable average last frost date.
- When is the first frost in Seeley Lake, 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.