Frost dates for Rolette 3se, ND
At Rolette 3se, the median last spring frost (32°F) is May 22 and the median first fall frost is Sep 20, for a typical growing season of 120 days. For a 90% chance that the last frost has passed, wait until Jun 3. Nearby ZIP codes are in USDA hardiness zone 3b.
- May 22Last spring frost (median)50% chance of 32°F after this date
- Jun 3Safer planting date10% chance of 32°F after this date
- Sep 20First 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 19 | May 30 | Jun 14 |
| 32°F | May 10 | May 22 | Jun 3 |
| 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 24 | Sep 10 | Sep 22 |
| 32°F | Sep 5 | Sep 20 | Oct 1 |
| 28°F | Sep 17 | Sep 27 | Oct 8 |
| 24°F | Sep 24 | Oct 5 | Oct 17 |
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 | 101 days | 120 days |
| 32°F | 100 days | 120 days | 138 days |
| 28°F | 121 days | 138 days | 155 days |
| 24°F | 136 days | 155 days | 174 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 |
|---|---|---|---|
| 58366 | 3b | -35 to -30°F | 6 km |
| 58353 | 3b | -35 to -30°F | 16 km |
| 58310 | 3b | -35 to -30°F | 20 km |
| 58385 | 3b | -35 to -30°F | 21 km |
| 58317 | 3b | -35 to -30°F | 30 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 USC00327655, at 48.6297, -99.8069, elevation 494 m (1,620 ft).
- Data quality: Representative (10+ years), 20 years of freeze data.
- Average days per year at or below 32°F: 206.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Belcourt Keya Radio (24 km)
- Rolla 1ne (32 km)
- Rugby (34 km)
- Willow City (36 km)
- Leeds (47 km)
- Towner 2 NE (52 km)
- Bottineau (52 km)
- Esmond 9 NNW (52 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.