Frost dates for Littlefork 10 SW, MN
At Littlefork 10 SW, the median last spring frost (32°F) is May 23 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 5. Nearby ZIP codes are in USDA hardiness zones 3a to 3b.
- May 23Last spring frost (median)50% chance of 32°F after this date
- Jun 5Safer 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 22 | Jun 4 | Jun 26 |
| 32°F | May 9 | May 23 | Jun 5 |
| 28°F | Apr 28 | May 10 | May 25 |
| 24°F | Apr 17 | Apr 30 | May 14 |
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 25 | Sep 10 | Sep 24 |
| 32°F | Sep 4 | Sep 21 | Oct 4 |
| 28°F | Sep 15 | Oct 1 | Oct 14 |
| 24°F | Sep 27 | Oct 12 | Oct 27 |
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 | 67 days | 96 days | 117 days |
| 32°F | 97 days | 118 days | 140 days |
| 28°F | 119 days | 141 days | 161 days |
| 24°F | 141 days | 163 days | 185 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 |
|---|---|---|---|
| 56653 | 3b | -35 to -30°F | 14 km |
| 56654 | 3a | -40 to -35°F | 19 km |
| 56629 | 3b | -35 to -30°F | 36 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 USC00214809, at 48.3681, -93.7214, elevation 366 m (1,200 ft).
- Data quality: Representative (10+ years), 17 years of freeze data.
- Average days per year at or below 32°F: 200.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Big Falls (20 km)
- Intl Falls Intl Airport (32 km)
- Kabetogama (50 km)
- Waskish 4ne (55 km)
- Northome 3s (71 km)
- Baudette (74 km)
- Baudette Intl Airport (75 km)
- Celina 2e (76 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.