Frost dates for Red Lake Indian Agcy, MN
At Red Lake Indian Agcy, the median last spring frost (32°F) is May 12 and the median first fall frost is Oct 4, for a typical growing season of 142 days. For a 90% chance that the last frost has passed, wait until May 30. Nearby ZIP codes are in USDA hardiness zone 3b.
- May 12Last spring frost (median)50% chance of 32°F after this date
- May 30Safer planting date10% chance of 32°F after this date
- Oct 4First fall frost (median)50% chance of 32°F by this date
- 142 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 7 | May 23 | Jun 8 |
| 32°F | Apr 29 | May 12 | May 30 |
| 28°F | Apr 19 | May 2 | May 19 |
| 24°F | Apr 9 | Apr 24 | May 9 |
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 7 | Sep 24 | Oct 8 |
| 32°F | Sep 19 | Oct 4 | Oct 19 |
| 28°F | Sep 28 | Oct 15 | Nov 1 |
| 24°F | Oct 4 | Oct 27 | Nov 11 |
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 | 101 days | 123 days | 143 days |
| 32°F | 119 days | 142 days | 164 days |
| 28°F | 139 days | 162 days | 184 days |
| 24°F | 159 days | 183 days | 204 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 |
|---|---|---|---|
| 56670 | 3b | -35 to -30°F | 12 km |
| 56667 | 3b | -35 to -30°F | 17 km |
| 56666 | 3b | -35 to -30°F | 23 km |
| 56652 | 3b | -35 to -30°F | 24 km |
| 56671 | 3b | -35 to -30°F | 25 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 USC00216795, at 47.8761, -95.0167, elevation 371 m (1,216 ft).
- Data quality: Representative (10+ years), 24 years of freeze data.
- Average days per year at or below 32°F: 187.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Thorhult (41 km)
- Blackduck (44 km)
- Northome 3s (57 km)
- Waskish 4ne (57 km)
- Cass Lake (62 km)
- Fosston 1 E (63 km)
- Itasca Univ Of Minn (74 km)
- Goodridge 12 NNW (80 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.