Frost dates for Mercury 3 SSW, NV
At Mercury 3 SSW, the median last spring frost (32°F) is Mar 10 and the median first fall frost is Nov 19, for a typical growing season of 253 days. For a 90% chance that the last frost has passed, wait until Apr 8. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 10Last spring frost (median)50% chance of 32°F after this date
- Apr 8Safer planting date10% chance of 32°F after this date
- Nov 19First fall frost (median)50% chance of 32°F by this date
- 253 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Mar 11 | Apr 4 | Apr 22 |
| 32°F | Feb 17 | Mar 10 | Apr 8 |
| 28°F | Jan 21 | Feb 17 | Mar 9 |
| 24°F | Dec 22 | Jan 21 | Feb 24 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 21 | Nov 8 | Nov 21 |
| 32°F | Nov 1 | Nov 19 | Dec 2 |
| 28°F | Nov 14 | Nov 30 | Dec 18 |
| 24°F | Nov 25 | Dec 15 | Jan 8 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 190 days | 215 days | 241 days |
| 32°F | 222 days | 253 days | 278 days |
| 28°F | 258 days | 288 days | 318 days |
| 24°F | 292 days | 329 days | 359 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 94% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 89060 | 8b | 15 to 20°F | 26 km |
| 89018 | 8a | 10 to 15°F | 32 km |
| 89020 | 8b | 15 to 20°F | 36 km |
| 89070 | 8b | 15 to 20°F | 37 km |
| 89124 | 8b | 15 to 20°F | 40 km |
| 89048 | 8b | 15 to 20°F | 51 km |
| 89166 | 8b | 15 to 20°F | 59 km |
| 89061 | 8b | 15 to 20°F | 62 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USW00053136, at 36.6239, -116.0225, elevation 1001 m (3,284 ft).
- Data quality: Representative (10+ years), 17 years of freeze data.
- Average days per year at or below 32°F: 47.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Mercury Desert Rock Airport (1 km)
- Amargosa Farms-Garey (40 km)
- Pahrump 4 NW (40 km)
- Mount Charleston Fire Station (53 km)
- Desert Nwr (63 km)
- Beatty 8 N (74 km)
- Red Rock Canyon - Spg Mount Rch S (80 km)
- Las Vegas Air Terminal (87 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.