When to plant in Westport, WA
Planting dates worked out from Westport's own frost records, not a generic zone chart.
Safe to plant out
Apr 20
1 year in 10 has a later frost
Average last frost
Apr 5
about a 50% chance of a later one
Average first fall frost
Nov 7
1 year in 10 by Oct 24
Frost-free days
219
median, 1991–2020
Station used: Grayland · 10.0 km away · station 3 m, town 7 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 28 – Apr 11 | May 23 – Jun 6 | Jul 17 |
| Sweet pepper | Mar 14 – Mar 28 | May 23 – Jun 6 | Jul 22 |
| Lettuce (leaf) | Feb 1 – Feb 8 | Mar 8 – Mar 22 | Apr 17 |
| Peas | — | Feb 22 – Mar 22 | Apr 18 |
| Bush beans | — | May 10 – May 31 | Jun 29 |
| Carrot | — | Mar 24 – May 5 | May 23 |
| Beet | — | Mar 24 – May 5 | May 13 |
| Potato | — | Mar 24 – Apr 14 | Jun 2 |
| Kale | Jan 25 – Feb 8 | Mar 8 – Mar 22 | Apr 20 |
| Broccoli | Jan 25 – Feb 8 | Mar 8 – Mar 29 | May 7 |
| Cucumber | Apr 25 – May 2 | May 23 – Jun 6 | Jul 12 |
| Summer squash and zucchini | Apr 25 – May 2 | May 23 – Jun 6 | Jul 7 |
| Winter squash | Apr 25 – May 2 | May 23 – Jun 6 | Aug 11 |
| Sweet corn | — | May 10 – May 31 | Jul 9 |
| Onion (from sets) | — | Mar 8 – Mar 29 | Jun 6 |
| Garlic | — | Oct 10 – Nov 7 (fall) | following summer |
| Spinach | — | Feb 22 – Mar 22 | Apr 1 |
| Basil | Apr 11 – Apr 25 | May 23 – Jun 6 | Jul 19 |
Westport'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 |
|---|---|
| 1949 | May 4 |
| 1954 | May 1 |
| 1955 | Apr 25 |
| 1956 | Apr 17 |
| 1957 | Apr 8 |
| 1958 | Apr 4 |
| 1959 | Apr 19 |
| 1960 | Apr 22 |
| 1961 | Apr 20 |
| 1962 | Apr 11 |
| 1963 | Apr 2 |
| 1964 | Apr 30 |
| 1965 | May 6 |
| 1966 | Apr 19 |
| 1967 | May 10 |
| 1968 | Apr 21 |
| 1969 | Mar 14 |
| 1971 | Apr 4 |
| 1972 | Apr 22 |
| 1973 | Apr 28 |
| 1974 | May 17 |
| 1975 | Apr 29 |
| 1976 | Jul 3 |
| 1977 | May 12 |
| 1978 | Mar 15 |
| 1980 | Apr 2 |
| 1983 | Apr 13 |
| 1984 | Apr 27 |
| 1985 | May 12 |
| 1986 | Apr 29 |
| 1988 | Apr 24 |
| 1989 | Mar 22 |
| 1990 | Mar 26 |
| 1991 | Apr 11 |
| 1992 | Mar 18 |
| 1993 | Apr 4 |
| 1994 | Mar 25 |
| 1995 | Mar 26 |
| 1996 | Mar 28 |
| 1997 | May 2 |
| 1998 | Mar 29 |
| 1999 | Apr 6 |
| 2000 | Mar 22 |
| 2001 | Apr 14 |
| 2002 | Apr 8 |
| 2005 | Mar 18 |
| 2006 | Mar 19 |
| 2007 | Apr 20 |
| 2008 | Apr 20 |
| 2009 | Apr 16 |
| 2010 | Apr 14 |
| 2011 | Apr 9 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1954 | 174 |
| 1955 | 199 |
| 1956 | 193 |
| 1957 | 194 |
| 1958 | 224 |
| 1959 | 192 |
| 1960 | 171 |
| 1961 | 183 |
| 1962 | 187 |
| 1963 | 199 |
| 1964 | 175 |
| 1965 | 200 |
| 1966 | 202 |
| 1967 | 192 |
| 1968 | 196 |
| 1969 | 212 |
| 1971 | 194 |
| 1974 | 156 |
| 1976 | 103 |
| 1980 | 196 |
| 1983 | 183 |
| 1984 | 172 |
| 1985 | 169 |
| 1986 | 198 |
| 1988 | 202 |
| 1989 | 219 |
| 1990 | 237 |
| 1991 | 199 |
| 1992 | 210 |
| 1993 | 216 |
| 1994 | 222 |
| 1995 | 219 |
| 1997 | 208 |
| 1998 | 249 |
| 1999 | 239 |
| 2000 | 231 |
| 2001 | 208 |
| 2002 | 204 |
| 2005 | 227 |
| 2006 | 224 |
| 2007 | 193 |
| 2008 | 171 |
| 2009 | 228 |
| 2010 | 220 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1954 | 12.2 °C |
| 1955 | 11.3 °C |
| 1956 | 12.7 °C |
| 1957 | 13.3 °C |
| 1958 | 13.9 °C |
| 1959 | 12.7 °C |
| 1960 | 12.4 °C |
| 1961 | 12.7 °C |
| 1962 | 12.3 °C |
| 1963 | 13.2 °C |
| 1964 | 11.9 °C |
| 1965 | 12.2 °C |
| 1966 | 12.4 °C |
| 1967 | 12.6 °C |
| 1968 | 12.8 °C |
| 1969 | 12.7 °C |
| 1971 | 12.3 °C |
| 1972 | 11.7 °C |
| 1973 | 11.8 °C |
| 1975 | 11.8 °C |
| 1976 | 11.8 °C |
| 1977 | 11.9 °C |
| 1978 | 12.8 °C |
| 1979 | 13.0 °C |
| 1983 | 13.5 °C |
| 1984 | 12.3 °C |
| 1985 | 12.9 °C |
| 1986 | 12.6 °C |
| 1988 | 12.7 °C |
| 1989 | 13.6 °C |
| 1990 | 13.7 °C |
| 1991 | 12.9 °C |
| 1992 | 13.5 °C |
| 1993 | 13.7 °C |
| 1994 | 13.6 °C |
| 1995 | 13.5 °C |
| 1997 | 14.4 °C |
| 1998 | 13.3 °C |
| 1999 | 12.4 °C |
| 2000 | 13.2 °C |
| 2001 | 12.4 °C |
| 2003 | 13.1 °C |
| 2004 | 14.1 °C |
| 2005 | 13.7 °C |
| 2006 | 13.1 °C |
| 2007 | 13.2 °C |
| 2008 | 11.9 °C |
| 2009 | 12.8 °C |
| 2010 | 12.3 °C |
What this means for you: Since 1949, Westport'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 Grayland (NOAA GHCN-Daily). Years with too many missing days are left out.