Frost dates for Elko NWS Office, NV
At Elko NWS Office, the median last spring frost (32°F) is May 26 and the median first fall frost is Sep 23, for a typical growing season of 120 days. For a 90% chance that the last frost has passed, wait until Jun 12. Nearby ZIP codes are in USDA hardiness zones 5a to 6b.
- May 26Last spring frost (median)50% chance of 32°F after this date
- Jun 12Safer planting date10% chance of 32°F after this date
- Sep 23First fall frost (median)50% chance of 32°F by this date
- 120 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 | May 24 | Jun 7 | Jun 22 |
| 32°F | May 8 | May 26 | Jun 12 |
| 28°F | Apr 24 | May 9 | Jun 1 |
| 24°F | Apr 6 | Apr 25 | May 14 |
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 | Sep 3 | Sep 14 | Sep 26 |
| 32°F | Sep 12 | Sep 23 | Oct 6 |
| 28°F | Sep 21 | Oct 4 | Oct 17 |
| 24°F | Oct 1 | Oct 13 | Oct 27 |
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 | 78 days | 97 days | 117 days |
| 32°F | 98 days | 120 days | 141 days |
| 28°F | 120 days | 146 days | 167 days |
| 24°F | 147 days | 172 days | 195 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
Closest ZIP codes (each is closer to another station)
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 89801 | 5a | -20 to -15°F | 34 km |
| 89815 | 5b | -15 to -10°F | 35 km |
| 89828 | 6a | -10 to -5°F | 36 km |
| 89823 | 5a | -20 to -15°F | 50 km |
| 89833 | 5b | -15 to -10°F | 54 km |
| 89822 | 5b | -15 to -10°F | 56 km |
| 89821 | 6a | -10 to -5°F | 66 km |
| 89834 | 6b | -5 to 0°F | 73 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 USC00262570, at 40.8603, -115.7425, elevation 1596 m (5,235 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 190.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Elko Regional Airport (5 km)
- Ryndon (16 km)
- S Fk State Rec Area (20 km)
- Lamoille Yost (24 km)
- Lamoille 2n (25 km)
- Deeth (46 km)
- Jiggs 2ne (47 km)
- Arthur 4nw (48 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.