Frost dates for 80449Hartsel, CO
Frost is possible in any month near Hartsel, based on NOAA 1991-2020 records for the Antero Rsvr, CO 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) | — | — | 25 days | 100% |
| Frost / freeze (32°F) | — | — | 57 days | 100% |
| Hard freeze (28°F) | Jun 1 · Jun 15 · Jul 1 | Aug 28 · Sep 8 · Sep 21 | 84 days | 100% |
Where these dates come from
ZIP code 80449 is matched to the NOAA station Antero Rsvr, CO, 3.1 km away, at 8,939 ft elevation (2 ft higher than the ZIP code's center). Nearby stations for comparison:
| Station | Elevation | Avg last frost | Avg first frost |
|---|---|---|---|
| Antero Rsvr, CO (used) | 8,939 ft | — | — |
| Buena Vista 2S, CO | 7,954 ft | May 27 | Sep 23 |
| Fairplay S Park Rd, CO | 9,996 ft | Jun 16 | Sep 9 |
| Lake George 8 Sw, CO | 8,550 ft | Jun 2 | Sep 19 |
Frost dates near Hartsel
- Como, CO 80432 · last —, first —
- Buena Vista, CO 81211 · last May 27, first Sep 23
- Fairplay, CO 80440 · last Jun 16, first Sep 9
- Guffey, CO 80820 · last Jun 2, first Sep 19
- Granite, CO 81228 · last Jun 16, first Sep 10
- Nathrop, CO 81236 · last May 27, first Sep 23
- Jefferson, CO 80456 · last Jun 15, first Sep 9
- Alma, CO 80420 · last Jun 16, first Sep 9
Frequently asked questions
- When is the last frost in Hartsel, CO?
- Frost is possible in any month at the nearest NOAA station (Antero Rsvr, CO), so there is no reliable average last frost date.
- When is the first frost in Hartsel, CO?
- 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.