Frost dates for Wolf Point 34 NE, MT
At Wolf Point 34 NE, the median last spring frost (32°F) is May 13 and the median first fall frost is Sep 28, for a typical growing season of 137 days. For a 90% chance that the last frost has passed, wait until May 25. Nearby ZIP codes are in USDA hardiness zones 3b to 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 28First fall frost (median)50% chance of 32°F by this date
- 137 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 23 | Jun 3 |
| 32°F | Apr 30 | May 13 | May 25 |
| 28°F | Apr 16 | May 2 | May 17 |
| 24°F | Apr 5 | Apr 20 | May 5 |
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 21 | Oct 2 |
| 32°F | Sep 14 | Sep 28 | Oct 11 |
| 28°F | Sep 22 | Oct 7 | Oct 22 |
| 24°F | Sep 28 | Oct 16 | Oct 31 |
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 | 100 days | 119 days | 136 days |
| 32°F | 119 days | 137 days | 156 days |
| 28°F | 137 days | 157 days | 177 days |
| 24°F | 156 days | 178 days | 198 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 |
|---|---|---|---|
| 59222 | 4a | -30 to -25°F | 24 km |
| 59255 | 4a | -30 to -25°F | 28 km |
| 59257 | 3b | -35 to -30°F | 35 km |
| 59263 | 3b | -35 to -30°F | 40 km |
| 59213 | 4a | -30 to -25°F | 41 km |
| 59258 | 3b | -35 to -30°F | 42 km |
| 59201 | 4a | -30 to -25°F | 49 km |
| 59247 | 3b | -35 to -30°F | 51 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 USW00094059, at 48.4886, -105.2097, elevation 806 m (2,643 ft).
- Data quality: Representative (10+ years), 19 years of freeze data.
- Average days per year at or below 32°F: 177.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Bredette (7 km)
- Wolf Point 29 ENE (22 km)
- Redstone (42 km)
- Scobey 4 NW (43 km)
- Wolf Point Intl Airport (51 km)
- Wolf Point (54 km)
- Medicine Lake 3 SE (56 km)
- Plentywood (57 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.