Frost dates for Valley City 3 NNW, ND
At Valley City 3 NNW, the median last spring frost (32°F) is May 13 and the median first fall frost is Sep 26, for a typical growing season of 136 days. For a 90% chance that the last frost has passed, wait until May 25. Nearby ZIP codes are in USDA hardiness zone 4a.
- May 13Last spring frost (median)50% chance of 32°F after this date
- May 25Safer planting date10% chance of 32°F after this date
- Sep 26First fall frost (median)50% chance of 32°F by this date
- 136 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 11 | May 22 | Jun 4 |
| 32°F | May 2 | May 13 | May 25 |
| 28°F | Apr 21 | May 4 | May 17 |
| 24°F | Apr 11 | Apr 26 | May 10 |
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 6 | Sep 17 | Sep 28 |
| 32°F | Sep 14 | Sep 26 | Oct 8 |
| 28°F | Sep 24 | Oct 5 | Oct 20 |
| 24°F | Oct 1 | Oct 16 | Oct 30 |
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 | 99 days | 116 days | 133 days |
| 32°F | 118 days | 136 days | 153 days |
| 28°F | 137 days | 155 days | 172 days |
| 24°F | 156 days | 174 days | 192 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 58072 | 4a | -30 to -25°F | 3 km |
| 58063 | 4a | -30 to -25°F | 17 km |
| 58480 | 4a | -30 to -25°F | 18 km |
| 58479 | 4a | -30 to -25°F | 20 km |
| 58071 | 4a | -30 to -25°F | 26 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 USC00328937, at 46.9558, -98.0203, elevation 369 m (1,210 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 192.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Colgate (42 km)
- Enderlin 2w (48 km)
- Jamestown Muni Airport (49 km)
- Cooperstown (50 km)
- Jamestown State Hosp (51 km)
- Casselton Agronomy Farm (60 km)
- Lisbon (62 km)
- La Moure (69 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.