When to plant in Burien, WA
Planting dates worked out from Burien's own frost records, not a generic zone chart.
Safe to plant out
Mar 28
1 year in 10 has a later frost
Average last frost
Mar 8
about a 50% chance of a later one
Average first fall frost
Nov 18
1 year in 10 by Oct 31
Frost-free days
250
median, 1991–2020
Station used: Seattle Tacoma Ap · 3.8 km away · station 112 m, town 115 m. How we match towns to stations
This season
Plan your garden.
Planting dates for common crops
| Crop | Start indoors | Plant out or sow | Harvest from |
|---|---|---|---|
| Tomato | Mar 5 – Mar 19 | Apr 30 – May 14 | Jun 24 |
| Sweet pepper | Feb 19 – Mar 5 | Apr 30 – May 14 | Jun 29 |
| Lettuce (leaf) | Jan 4 – Jan 11 | Feb 8 – Feb 22 | Mar 20 |
| Peas | — | Jan 28 – Feb 25 | Mar 24 |
| Bush beans | — | Apr 22 – May 13 | Jun 11 |
| Carrot | — | Mar 16 – Apr 27 | May 15 |
| Beet | — | Mar 16 – Apr 27 | May 5 |
| Potato | — | Mar 16 – Apr 6 | May 25 |
| Kale | Dec 28 – Jan 11 | Feb 8 – Feb 22 | Mar 23 |
| Broccoli | Dec 28 – Jan 11 | Feb 8 – Mar 1 | Apr 9 |
| Cucumber | Apr 2 – Apr 9 | Apr 30 – May 14 | Jun 19 |
| Summer squash and zucchini | Apr 2 – Apr 9 | Apr 30 – May 14 | Jun 14 |
| Winter squash | Apr 2 – Apr 9 | Apr 30 – May 14 | Jul 19 |
| Sweet corn | — | Apr 22 – May 13 | Jun 21 |
| Onion (from sets) | — | Feb 8 – Mar 1 | May 9 |
| Garlic | — | Oct 15 – Nov 12 (fall) | following summer |
| Spinach | — | Jan 28 – Feb 25 | Mar 7 |
| Basil | Mar 19 – Apr 2 | Apr 30 – May 14 | Jun 26 |
Burien's weather over time
How the growing season has shifted here, year by year, from the station's own records.
Each year's last spring frostLong-term trend
See the data as a table
| Year | Last spring frost |
|---|---|
| 1948 | Apr 27 |
| 1949 | Mar 31 |
| 1950 | Apr 24 |
| 1951 | May 1 |
| 1952 | Apr 29 |
| 1953 | Apr 10 |
| 1954 | May 1 |
| 1955 | Apr 28 |
| 1956 | Apr 6 |
| 1957 | Feb 23 |
| 1958 | Mar 14 |
| 1959 | Mar 20 |
| 1960 | Mar 14 |
| 1961 | Apr 20 |
| 1962 | Mar 28 |
| 1963 | Apr 2 |
| 1964 | Mar 19 |
| 1965 | Mar 27 |
| 1966 | Mar 22 |
| 1967 | Mar 13 |
| 1968 | Mar 30 |
| 1969 | Mar 12 |
| 1970 | Mar 2 |
| 1971 | Mar 21 |
| 1972 | Mar 7 |
| 1973 | Mar 19 |
| 1974 | Mar 8 |
| 1975 | Apr 5 |
| 1976 | Apr 2 |
| 1977 | Feb 3 |
| 1978 | Mar 1 |
| 1979 | Feb 22 |
| 1980 | Mar 6 |
| 1981 | Feb 11 |
| 1982 | Mar 17 |
| 1983 | Feb 5 |
| 1984 | Feb 5 |
| 1985 | Apr 21 |
| 1986 | Feb 20 |
| 1987 | Feb 25 |
| 1988 | Mar 11 |
| 1989 | Mar 20 |
| 1990 | Mar 13 |
| 1991 | Mar 27 |
| 1992 | Feb 16 |
| 1993 | Feb 28 |
| 1994 | Mar 23 |
| 1995 | Mar 3 |
| 1996 | Mar 2 |
| 1997 | Apr 2 |
| 1998 | Mar 29 |
| 1999 | Mar 28 |
| 2000 | Mar 20 |
| 2001 | Mar 3 |
| 2002 | Mar 20 |
| 2003 | Feb 26 |
| 2004 | Mar 2 |
| 2005 | Feb 23 |
| 2006 | Mar 12 |
| 2007 | Mar 21 |
| 2008 | Apr 1 |
| 2009 | Mar 21 |
| 2010 | Mar 9 |
| 2011 | Feb 26 |
| 2012 | Mar 19 |
| 2013 | Mar 4 |
| 2014 | Feb 9 |
| 2015 | Mar 4 |
| 2016 | Jan 9 |
| 2017 | Feb 25 |
| 2018 | Feb 26 |
| 2019 | Mar 10 |
| 2020 | Mar 15 |
| 2021 | Mar 8 |
| 2022 | Apr 13 |
| 2023 | Mar 27 |
| 2024 | Mar 7 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1948 | 182 |
| 1949 | 200 |
| 1950 | 198 |
| 1951 | 181 |
| 1952 | 186 |
| 1953 | 195 |
| 1954 | 176 |
| 1955 | 196 |
| 1956 | 204 |
| 1957 | 253 |
| 1958 | 245 |
| 1959 | 231 |
| 1960 | 250 |
| 1961 | 198 |
| 1962 | 244 |
| 1963 | 230 |
| 1964 | 239 |
| 1965 | 240 |
| 1966 | 230 |
| 1967 | 252 |
| 1968 | 250 |
| 1969 | 259 |
| 1970 | 238 |
| 1971 | 220 |
| 1972 | 270 |
| 1973 | 230 |
| 1974 | 240 |
| 1975 | 225 |
| 1976 | 237 |
| 1977 | 277 |
| 1978 | 254 |
| 1979 | 251 |
| 1980 | 249 |
| 1981 | 285 |
| 1982 | 237 |
| 1983 | 298 |
| 1984 | 267 |
| 1985 | 190 |
| 1986 | 262 |
| 1987 | 264 |
| 1988 | 263 |
| 1989 | 265 |
| 1990 | 249 |
| 1991 | 216 |
| 1992 | 279 |
| 1993 | 266 |
| 1994 | 238 |
| 1995 | 244 |
| 1996 | 242 |
| 1997 | 247 |
| 1998 | 264 |
| 1999 | 270 |
| 2000 | 235 |
| 2001 | 238 |
| 2002 | 226 |
| 2003 | 246 |
| 2004 | 246 |
| 2005 | 264 |
| 2006 | 231 |
| 2007 | 225 |
| 2008 | 255 |
| 2009 | 237 |
| 2010 | 256 |
| 2011 | 252 |
| 2012 | 235 |
| 2013 | 261 |
| 2014 | 275 |
| 2015 | 263 |
| 2016 | 330 |
| 2017 | 285 |
| 2018 | 280 |
| 2019 | 262 |
| 2020 | 238 |
| 2021 | 253 |
| 2022 | 209 |
| 2023 | 215 |
| 2024 | 265 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1948 | 13.8 °C |
| 1949 | 15.0 °C |
| 1950 | 14.0 °C |
| 1951 | 14.6 °C |
| 1952 | 14.2 °C |
| 1953 | 13.6 °C |
| 1954 | 13.3 °C |
| 1955 | 12.9 °C |
| 1956 | 14.5 °C |
| 1957 | 15.1 °C |
| 1958 | 16.4 °C |
| 1959 | 14.5 °C |
| 1960 | 14.5 °C |
| 1961 | 15.4 °C |
| 1962 | 14.2 °C |
| 1963 | 15.2 °C |
| 1964 | 14.0 °C |
| 1965 | 15.0 °C |
| 1966 | 14.8 °C |
| 1967 | 16.3 °C |
| 1968 | 15.2 °C |
| 1969 | 15.6 °C |
| 1970 | 14.8 °C |
| 1971 | 14.7 °C |
| 1972 | 15.0 °C |
| 1973 | 14.9 °C |
| 1974 | 15.6 °C |
| 1975 | 15.1 °C |
| 1976 | 15.4 °C |
| 1977 | 15.9 °C |
| 1978 | 15.4 °C |
| 1979 | 16.0 °C |
| 1980 | 14.5 °C |
| 1981 | 15.0 °C |
| 1982 | 15.0 °C |
| 1983 | 15.2 °C |
| 1984 | 14.7 °C |
| 1985 | 15.2 °C |
| 1986 | 15.2 °C |
| 1987 | 16.0 °C |
| 1988 | 15.2 °C |
| 1989 | 16.1 °C |
| 1990 | 16.1 °C |
| 1991 | 15.4 °C |
| 1992 | 16.6 °C |
| 1993 | 15.5 °C |
| 1994 | 16.6 °C |
| 1995 | 16.4 °C |
| 1996 | 15.4 °C |
| 1997 | 15.7 °C |
| 1998 | 15.8 °C |
| 1999 | 14.3 °C |
| 2000 | 14.9 °C |
| 2001 | 14.4 °C |
| 2002 | 15.0 °C |
| 2003 | 15.9 °C |
| 2004 | 16.3 °C |
| 2005 | 15.7 °C |
| 2006 | 16.1 °C |
| 2007 | 15.7 °C |
| 2008 | 15.0 °C |
| 2009 | 16.2 °C |
| 2010 | 14.8 °C |
| 2011 | 14.8 °C |
| 2012 | 15.5 °C |
| 2013 | 17.0 °C |
| 2014 | 17.1 °C |
| 2015 | 17.3 °C |
| 2016 | 17.1 °C |
| 2017 | 16.9 °C |
| 2018 | 17.2 °C |
| 2019 | 17.1 °C |
| 2020 | 16.9 °C |
| 2021 | 16.8 °C |
| 2022 | 16.0 °C |
| 2023 | 16.7 °C |
| 2024 | 16.1 °C |
What this means for you: Since 1948, Burien's last spring frost has come about 4 days earlier per decade, on average. The frost-free season has grown by about 6 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Seattle Tacoma Ap (NOAA GHCN-Daily). Years with too many missing days are left out.