Frost Dates for Bremerton, WA
In Bremerton, WA, the average last spring frost is around Mar 29 and the average first fall frost around Nov 14, for a growing season of about 227 days. For frost-tender plants, wait until Apr 24, when the chance of frost drops to 10%.
Based on NOAA 1991–2020 records from the Bremerton, WA weather station, 3 miles away, elevation 110 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 24 | Oct 26 |
| 20% | Apr 15 | Nov 2 |
| 30% | Apr 7 | Nov 7 |
| 40% | Apr 2 | Nov 10 |
| 50% | Mar 29 | Nov 14 |
| 60% | Mar 25 | Nov 17 |
| 70% | Mar 20 | Nov 21 |
| 80% | Mar 13 | Nov 25 |
| 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 25 | Oct 27 |
| Frost / freeze (32°F) | Mar 29 | Nov 14 |
| Hard freeze (28°F) | Feb 27 | Nov 30 |
Planting calendar for Bremerton
Transplant Apr 5 – Apr 19
Transplant Apr 12 – Apr 26
Transplant Apr 12 – Apr 26
Transplant Apr 5 – Apr 19
Sow or transplant Apr 5 – Apr 19
Sow or transplant Apr 5 – Apr 19
Sow or transplant Apr 12 – Apr 26
Sow or transplant Mar 1 – Mar 15
Fall sowing Sep 19 – Oct 17
Fall sowing Sep 19 – Oct 10
Fall sowing Sep 5 – Sep 19
Sow or transplant Mar 1 – Mar 15
Fall sowing Sep 5 – Oct 3
Transplant Mar 15 – Mar 29
Fall sowing Aug 22 – Sep 5
Transplant Mar 8 – Mar 22
Fall sowing Aug 22 – Sep 5
Fall sowing Aug 22 – Sep 5
Fall sowing Oct 3 – Oct 24
Fall sowing Sep 5 – Sep 19
Plant Mar 1 – Mar 15
Based on the average last frost (Mar 29) and first frost (Nov 14). The dashed lines mark those dates. Seed packets list days to maturity; adjust for your varieties.