Frost dates for Mpls Flying Cloud Airport, MN
At Mpls Flying Cloud Airport, the median last spring frost (32°F) is Apr 23 and the median first fall frost is Oct 14, for a typical growing season of 172 days. For a 90% chance that the last frost has passed, wait until May 6. Nearby ZIP codes are in USDA hardiness zones 4b to 5a.
- Apr 23Last spring frost (median)50% chance of 32°F after this date
- May 6Safer planting date10% chance of 32°F after this date
- Oct 14First fall frost (median)50% chance of 32°F by this date
- 172 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 | Apr 21 | May 3 | May 16 |
| 32°F | Apr 9 | Apr 23 | May 6 |
| 28°F | Apr 1 | Apr 13 | Apr 26 |
| 24°F | Mar 22 | Apr 5 | Apr 19 |
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 20 | Oct 4 | Oct 18 |
| 32°F | Sep 28 | Oct 14 | Oct 28 |
| 28°F | Oct 9 | Oct 25 | Nov 8 |
| 24°F | Oct 20 | Nov 4 | Nov 18 |
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 | 132 days | 152 days | 170 days |
| 32°F | 152 days | 172 days | 191 days |
| 28°F | 174 days | 193 days | 213 days |
| 24°F | 192 days | 211 days | 231 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 |
|---|---|---|---|
| 55347 | 5a | -20 to -15°F | 1 km |
| 55344 | 5a | -20 to -15°F | 5 km |
| 55346 | 5a | -20 to -15°F | 5 km |
| 55438 | 5a | -20 to -15°F | 7 km |
| 55439 | 5a | -20 to -15°F | 9 km |
| 55345 | 5a | -20 to -15°F | 9 km |
| 55343 | 5a | -20 to -15°F | 10 km |
| 55437 | 5a | -20 to -15°F | 10 km |
| 55379 | 5a | -20 to -15°F | 10 km |
| 55436 | 5a | -20 to -15°F | 11 km |
| 55378 | 5a | -20 to -15°F | 12 km |
| 55372 | 4b | -25 to -20°F | 17 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 USW00094963, at 44.8322, -93.4706, elevation 276 m (907 ft).
- Data quality: Representative (10+ years), 23 years of freeze data.
- Average days per year at or below 32°F: 145.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Chanhassen Wsfo (8 km)
- Chaska 2nw (13 km)
- Minneapolis/st Paul Airport (20 km)
- New Hope (21 km)
- Lower St. Anthony Falls (24 km)
- Jordan 1ssw (24 km)
- Mpls Crystal Airport (27 km)
- St. Paul 3sw (27 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.