Frost Dates for St. Louis Park, MN
In St. Louis Park, MN, the average last spring frost is around Apr 29 and the average first fall frost around Oct 12, for a growing season of about 163 days. For frost-tender plants, wait until May 12, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the New Hope, MN weather station, 4 miles away, elevation 910 ft. Frost can come earlier in low spots and valleys and later near cities and large lakes.
Frost probability by date
Chance of a 32°F frost after the spring date, or before the fall date.
| Chance | Last spring frost | First fall frost |
|---|---|---|
| 10% | May 12 | Sep 29 |
| 20% | May 7 | Oct 2 |
| 30% | May 4 | Oct 5 |
| 40% | May 1 | Oct 9 |
| 50% | Apr 29 | Oct 12 |
| 60% | Apr 26 | Oct 15 |
| 70% | Apr 23 | Oct 18 |
| 80% | Apr 19 | Oct 21 |
| 90% | Apr 15 | Oct 25 |
Light frost vs. hard freeze
Average (50%) dates for each temperature. Tender plants are damaged at 36°F; most hardy crops survive until 28°F.
| Temperature | Last in spring | First in fall |
|---|---|---|
| Light frost (36°F) | May 8 | Oct 1 |
| Frost / freeze (32°F) | Apr 29 | Oct 12 |
| Hard freeze (28°F) | Apr 19 | Oct 22 |
Planting calendar for St. Louis Park
Transplant May 6 – May 20
Transplant May 13 – May 27
Transplant May 13 – May 27
Transplant May 6 – May 20
Sow or transplant May 6 – May 20
Sow or transplant May 6 – May 20
Sow or transplant May 13 – May 27
Sow or transplant Apr 1 – Apr 15
Fall sowing Aug 17 – Sep 14
Fall sowing Aug 17 – Sep 7
Fall sowing Aug 3 – Aug 17
Sow or transplant Apr 1 – Apr 15
Fall sowing Aug 3 – Aug 31
Transplant Apr 15 – Apr 29
Fall sowing Jul 20 – Aug 3
Transplant Apr 8 – Apr 22
Fall sowing Jul 20 – Aug 3
Fall sowing Jul 20 – Aug 3
Fall sowing Aug 31 – Sep 21
Fall sowing Aug 3 – Aug 17
Plant Apr 1 – Apr 15
Based on the average last frost (Apr 29) and first frost (Oct 12). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.