Frost Dates for Longview, WA
In Longview, WA, the average last spring frost is around Apr 8 and the average first fall frost around Nov 5, for a growing season of about 210 days. For frost-tender plants, wait until May 2, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Longview, WA weather station, 2 miles away, elevation 12 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 2 | Oct 17 |
| 20% | Apr 26 | Oct 24 |
| 30% | Apr 20 | Oct 29 |
| 40% | Apr 14 | Nov 1 |
| 50% | Apr 8 | Nov 5 |
| 60% | Apr 2 | Nov 10 |
| 70% | Mar 29 | Nov 15 |
| 80% | Mar 21 | Nov 21 |
| 90% | Mar 11 | Nov 28 |
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 3 | Oct 21 |
| Frost / freeze (32°F) | Apr 8 | Nov 5 |
| Hard freeze (28°F) | Mar 6 | Nov 24 |
Planting calendar for Longview
Transplant Apr 15 – Apr 29
Transplant Apr 22 – May 6
Transplant Apr 22 – May 6
Transplant Apr 15 – Apr 29
Sow or transplant Apr 15 – Apr 29
Sow or transplant Apr 15 – Apr 29
Sow or transplant Apr 22 – May 6
Sow or transplant Mar 11 – Mar 25
Fall sowing Sep 10 – Oct 8
Fall sowing Sep 10 – Oct 1
Fall sowing Aug 27 – Sep 10
Sow or transplant Mar 11 – Mar 25
Fall sowing Aug 27 – Sep 24
Transplant Mar 25 – Apr 8
Fall sowing Aug 13 – Aug 27
Transplant Mar 18 – Apr 1
Fall sowing Aug 13 – Aug 27
Fall sowing Aug 13 – Aug 27
Fall sowing Sep 24 – Oct 15
Fall sowing Aug 27 – Sep 10
Plant Mar 11 – Mar 25
Based on the average last frost (Apr 8) and first frost (Nov 5). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.