Frost dates for Ruby Lake Nwr, NV
At Ruby Lake Nwr, the median last spring frost (32°F) is May 27 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 6a.
- May 27Last 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 22 | Jun 7 | Jun 22 |
| 32°F | May 5 | May 27 | Jun 12 |
| 28°F | Apr 20 | May 7 | May 30 |
| 24°F | Apr 6 | Apr 22 | May 11 |
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 | Aug 31 | Sep 12 | Sep 24 |
| 32°F | Sep 10 | Sep 23 | Oct 4 |
| 28°F | Sep 21 | Oct 2 | Oct 14 |
| 24°F | Sep 28 | Oct 10 | Oct 25 |
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 | 76 days | 96 days | 116 days |
| 32°F | 98 days | 120 days | 142 days |
| 28°F | 122 days | 147 days | 166 days |
| 24°F | 149 days | 170 days | 191 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 |
|---|---|---|---|
| 89833 | 5b | -15 to -10°F | 34 km |
| 89815 | 5b | -15 to -10°F | 41 km |
| 89828 | 6a | -10 to -5°F | 61 km |
| 89822 | 5b | -15 to -10°F | 67 km |
| 89316 | 5b | -15 to -10°F | 74 km |
| 89821 | 6a | -10 to -5°F | 87 km |
| 89823 | 5a | -20 to -15°F | 88 km |
| 89301 | 5b | -15 to -10°F | 97 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 USC00267123, at 40.2022, -115.4930, elevation 1835 m (6,019 ft).
- Data quality: Standard (24+ years of data), 26 years of freeze data.
- Average days per year at or below 32°F: 186.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Jiggs 2ne (30 km)
- S Fk State Rec Area (57 km)
- Lamoille Yost (57 km)
- Pine Valley - Carlin 20s (59 km)
- Lamoille 2n (60 km)
- Arthur 4nw (69 km)
- Diamond Valley - Eureka 14nnw (73 km)
- Elko Regional Airport (74 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.