Frost dates for Bushnell 15s, NE
At Bushnell 15s, the median last spring frost (32°F) is May 25 and the median first fall frost is Sep 21, for a typical growing season of 118 days. For a 90% chance that the last frost has passed, wait until Jun 9. Nearby ZIP codes are in USDA hardiness zones 5a to 5b.
- May 25Last spring frost (median)50% chance of 32°F after this date
- Jun 9Safer planting date10% chance of 32°F after this date
- Sep 21First fall frost (median)50% chance of 32°F by this date
- 118 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 23 | Jun 5 | Jun 20 |
| 32°F | May 11 | May 25 | Jun 9 |
| 28°F | May 1 | May 13 | May 27 |
| 24°F | Apr 19 | May 3 | May 16 |
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 30 | Sep 13 | Sep 24 |
| 32°F | Sep 6 | Sep 21 | Oct 2 |
| 28°F | Sep 16 | Sep 30 | Oct 11 |
| 24°F | Sep 27 | Oct 9 | Oct 20 |
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 | 77 days | 98 days | 116 days |
| 32°F | 96 days | 118 days | 136 days |
| 28°F | 119 days | 138 days | 155 days |
| 24°F | 139 days | 157 days | 175 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 |
|---|---|---|---|
| 69128 | 5a | -20 to -15°F | 25 km |
| 80742 | 5a | -20 to -15°F | 29 km |
| 69145 | 5a | -20 to -15°F | 31 km |
| 80729 | 5a | -20 to -15°F | 33 km |
| 82082 | 5a | -20 to -15°F | 33 km |
| 80732 | 5a | -20 to -15°F | 36 km |
| 82054 | 5b | -15 to -10°F | 41 km |
| 80745 | 5b | -15 to -10°F | 41 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 USC00251361, at 41.0103, -103.8769, elevation 1576 m (5,170 ft).
- Data quality: Representative (10+ years), 18 years of freeze data.
- Average days per year at or below 32°F: 202.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Kimball 2ne (33 km)
- Harrisburg 12wnw (70 km)
- Bridgeport 18wsw (75 km)
- Sidney Muni Airport (75 km)
- Sidney 6 NNW (76 km)
- Dalton (88 km)
- Scottsbluff 1e (97 km)
- Bridgeport (98 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.