Frost Dates for Puyallup, WA
In Puyallup, WA, the average last spring frost is around Apr 11 and the average first fall frost around Oct 30, for a growing season of about 202 days. For frost-tender plants, wait until Apr 29, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Mcmillin Rsvr, WA weather station, 3 miles away, elevation 579 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 29 | Oct 13 |
| 20% | Apr 24 | Oct 19 |
| 30% | Apr 19 | Oct 22 |
| 40% | Apr 15 | Oct 26 |
| 50% | Apr 11 | Oct 30 |
| 60% | Apr 7 | Nov 1 |
| 70% | Apr 3 | Nov 5 |
| 80% | Mar 30 | Nov 10 |
| 90% | Mar 23 | Nov 17 |
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 1 | Oct 12 |
| Frost / freeze (32°F) | Apr 11 | Oct 30 |
| Hard freeze (28°F) | Mar 16 | Nov 14 |
Planting calendar for Puyallup
Transplant Apr 18 – May 2
Transplant Apr 25 – May 9
Transplant Apr 25 – May 9
Transplant Apr 18 – May 2
Sow or transplant Apr 18 – May 2
Sow or transplant Apr 18 – May 2
Sow or transplant Apr 25 – May 9
Sow or transplant Mar 14 – Mar 28
Fall sowing Sep 4 – Oct 2
Fall sowing Sep 4 – Sep 25
Fall sowing Aug 21 – Sep 4
Sow or transplant Mar 14 – Mar 28
Fall sowing Aug 21 – Sep 18
Transplant Mar 28 – Apr 11
Fall sowing Aug 7 – Aug 21
Transplant Mar 21 – Apr 4
Fall sowing Aug 7 – Aug 21
Fall sowing Aug 7 – Aug 21
Fall sowing Sep 18 – Oct 9
Fall sowing Aug 21 – Sep 4
Plant Mar 14 – Mar 28
Based on the average last frost (Apr 11) and first frost (Oct 30). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.