Frost dates for 59030Gardiner, MT
Frost is possible in any month near Gardiner, based on NOAA 1991-2020 records for the Lake Yellowstone, WY 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) | — | — | 34 days | 100% |
| Frost / freeze (32°F) | — | — | 64 days | 100% |
| Hard freeze (28°F) | May 22 · Jun 8 · Jun 24 | Aug 31 · Sep 14 · Sep 29 | 98 days | 100% |
Where these dates come from
ZIP code 59030 is matched to the NOAA station Lake Yellowstone, WY, 59.7 km away, at 7,892 ft elevation (927 ft lower than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Lake Yellowstone, WY (used) | 7,892 ft | — | — |
| Gardiner, MT | 5,275 ft | May 21 | Sep 27 |
| Yellowstone Park Mammoth, WY | 6,195 ft | Jun 3 | Sep 14 |
| Tower Falls, WY | 6,275 ft | — | — |
Frost dates near Gardiner
- Emigrant, MT 59027 · last May 21, first Sep 27
- Pray, MT 59065 · last May 19, first Sep 25
- Yellowstone National Park, WY 82190 · last —, first —
- Silver Gate, MT 59081 · last —, first —
- Cooke City, MT 59020 · last —, first —
- Gallatin Gateway, MT 59730 · last —, first —
- West Yellowstone, MT 59758 · last —, first —
- Livingston, MT 59047 · last May 27, first Sep 14
Frequently asked questions
- When is the last frost in Gardiner, MT?
- Frost is possible in any month at the nearest NOAA station (Lake Yellowstone, WY), so there is no reliable average last frost date.
- When is the first frost in Gardiner, 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.