Frost Dates for McMinnville, OR
In McMinnville, OR, the average last spring frost is around Apr 5 and the average first fall frost around Nov 7, for a growing season of about 216 days. For frost-tender plants, wait until Apr 27, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Mc Minnville, OR weather station, 2 miles away, elevation 155 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% | Apr 27 | Oct 20 |
| 20% | Apr 19 | Oct 26 |
| 30% | Apr 15 | Oct 30 |
| 40% | Apr 10 | Nov 3 |
| 50% | Apr 5 | Nov 7 |
| 60% | Mar 31 | Nov 11 |
| 70% | Mar 25 | Nov 16 |
| 80% | Mar 17 | Nov 22 |
| 90% | Mar 5 | Dec 1 |
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) | Apr 29 | Oct 22 |
| Frost / freeze (32°F) | Apr 5 | Nov 7 |
| Hard freeze (28°F) | Feb 20 | Nov 28 |
Planting calendar for McMinnville
Transplant Apr 12 – Apr 26
Transplant Apr 19 – May 3
Transplant Apr 19 – May 3
Transplant Apr 12 – Apr 26
Sow or transplant Apr 12 – Apr 26
Sow or transplant Apr 12 – Apr 26
Sow or transplant Apr 19 – May 3
Sow or transplant Mar 8 – Mar 22
Fall sowing Sep 12 – Oct 10
Fall sowing Sep 12 – Oct 3
Fall sowing Aug 29 – Sep 12
Sow or transplant Mar 8 – Mar 22
Fall sowing Aug 29 – Sep 26
Transplant Mar 22 – Apr 5
Fall sowing Aug 15 – Aug 29
Transplant Mar 15 – Mar 29
Fall sowing Aug 15 – Aug 29
Fall sowing Aug 15 – Aug 29
Fall sowing Sep 26 – Oct 17
Fall sowing Aug 29 – Sep 12
Plant Mar 8 – Mar 22
Based on the average last frost (Apr 5) and first frost (Nov 7). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.