When to plant in Seaside, OR
Planting dates worked out from Seaside'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
Mar 29
about a 50% chance of a later one
Average first fall frost
Nov 12
1 year in 10 by Oct 25
Frost-free days
224
median, 1991–2020
Station used: Astoria Ap (Port Of) · 18.5 km away · station 3 m, town 2 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 21 – Apr 4 | May 16 – May 30 | Jul 10 |
| Sweet pepper | Mar 7 – Mar 21 | May 16 – May 30 | Jul 15 |
| Lettuce (leaf) | Jan 25 – Feb 1 | Mar 1 – Mar 15 | Apr 10 |
| Peas | — | Feb 15 – Mar 15 | Apr 11 |
| Bush beans | — | May 5 – May 26 | Jun 24 |
| Carrot | — | Mar 21 – May 2 | May 20 |
| Beet | — | Mar 21 – May 2 | May 10 |
| Potato | — | Mar 21 – Apr 11 | May 30 |
| Kale | Jan 18 – Feb 1 | Mar 1 – Mar 15 | Apr 13 |
| Broccoli | Jan 18 – Feb 1 | Mar 1 – Mar 22 | Apr 30 |
| Cucumber | Apr 18 – Apr 25 | May 16 – May 30 | Jul 5 |
| Summer squash and zucchini | Apr 18 – Apr 25 | May 16 – May 30 | Jun 30 |
| Winter squash | Apr 18 – Apr 25 | May 16 – May 30 | Aug 4 |
| Sweet corn | — | May 5 – May 26 | Jul 4 |
| Onion (from sets) | — | Mar 1 – Mar 22 | May 30 |
| Garlic | — | Oct 19 – Nov 16 (fall) | following summer |
| Spinach | — | Feb 15 – Mar 15 | Mar 25 |
| Basil | Apr 4 – Apr 18 | May 16 – May 30 | Jul 12 |
Seaside'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 |
|---|---|
| 1953 | Apr 24 |
| 1954 | May 1 |
| 1955 | Apr 25 |
| 1956 | Apr 17 |
| 1957 | Apr 8 |
| 1958 | Mar 16 |
| 1959 | Apr 3 |
| 1960 | Apr 22 |
| 1961 | Apr 7 |
| 1962 | Apr 11 |
| 1963 | Apr 2 |
| 1964 | Apr 18 |
| 1965 | May 6 |
| 1966 | Apr 19 |
| 1967 | Apr 19 |
| 1968 | Apr 17 |
| 1969 | Apr 3 |
| 1970 | Apr 16 |
| 1971 | Apr 12 |
| 1972 | Mar 7 |
| 1973 | Apr 2 |
| 1974 | Apr 13 |
| 1975 | Apr 29 |
| 1976 | Mar 12 |
| 1977 | May 12 |
| 1978 | Apr 6 |
| 1979 | Mar 20 |
| 1980 | Apr 2 |
| 1981 | Apr 13 |
| 1982 | Apr 19 |
| 1983 | Apr 13 |
| 1984 | Apr 26 |
| 1985 | May 12 |
| 1986 | Apr 30 |
| 1987 | Apr 25 |
| 1988 | Apr 25 |
| 1989 | Apr 17 |
| 1990 | Mar 27 |
| 1991 | Apr 12 |
| 1992 | Mar 9 |
| 1993 | Mar 27 |
| 1994 | Mar 23 |
| 1995 | Mar 27 |
| 1996 | Mar 28 |
| 1997 | Apr 5 |
| 1998 | Apr 13 |
| 1999 | Apr 2 |
| 2000 | Mar 15 |
| 2001 | Apr 14 |
| 2002 | Apr 24 |
| 2003 | Mar 24 |
| 2004 | Apr 1 |
| 2005 | Mar 18 |
| 2006 | Mar 19 |
| 2007 | Apr 20 |
| 2008 | Apr 21 |
| 2009 | Apr 4 |
| 2010 | Feb 22 |
| 2011 | Apr 17 |
| 2012 | Mar 23 |
| 2013 | May 1 |
| 2014 | Mar 22 |
| 2015 | Mar 4 |
| 2016 | Mar 17 |
| 2017 | Mar 19 |
| 2018 | Mar 25 |
| 2019 | Mar 11 |
| 2020 | Apr 13 |
| 2021 | Apr 11 |
| 2022 | Mar 31 |
| 2023 | Apr 5 |
| 2024 | Mar 7 |
Each year's frost-free daysLong-term trend
See the data as a table
| Year | Frost-free days |
|---|---|
| 1953 | 250 |
| 1954 | 175 |
| 1955 | 189 |
| 1956 | 193 |
| 1957 | 208 |
| 1958 | 243 |
| 1959 | 216 |
| 1960 | 217 |
| 1961 | 205 |
| 1962 | 225 |
| 1963 | 230 |
| 1964 | 190 |
| 1965 | 200 |
| 1966 | 202 |
| 1967 | 214 |
| 1968 | 210 |
| 1969 | 237 |
| 1970 | 193 |
| 1971 | 197 |
| 1972 | 235 |
| 1973 | 212 |
| 1974 | 252 |
| 1975 | 201 |
| 1976 | 257 |
| 1977 | 179 |
| 1978 | 202 |
| 1979 | 237 |
| 1980 | 247 |
| 1981 | 224 |
| 1982 | 203 |
| 1983 | 176 |
| 1984 | 173 |
| 1985 | 149 |
| 1986 | 193 |
| 1987 | 215 |
| 1988 | 202 |
| 1989 | 198 |
| 1990 | 223 |
| 1991 | 199 |
| 1992 | 219 |
| 1993 | 224 |
| 1994 | 223 |
| 1995 | 217 |
| 1996 | 211 |
| 1997 | 256 |
| 1998 | 228 |
| 1999 | 272 |
| 2000 | 240 |
| 2001 | 260 |
| 2002 | 188 |
| 2003 | 220 |
| 2004 | 216 |
| 2005 | 241 |
| 2006 | 224 |
| 2007 | 192 |
| 2008 | 172 |
| 2009 | 241 |
| 2010 | 271 |
| 2011 | 200 |
| 2012 | 230 |
| 2013 | 180 |
| 2014 | 234 |
| 2015 | 263 |
| 2016 | 263 |
| 2017 | 270 |
| 2018 | 227 |
| 2019 | 212 |
| 2020 | 208 |
| 2021 | 223 |
| 2022 | 222 |
| 2023 | 206 |
| 2024 | 265 |
Each year's average temperature, April to SeptemberLong-term trend
See the data as a table
| Year | Growing-season temperature |
|---|---|
| 1953 | 13.3 °C |
| 1954 | 12.7 °C |
| 1955 | 11.9 °C |
| 1956 | 13.3 °C |
| 1957 | 13.9 °C |
| 1958 | 14.5 °C |
| 1959 | 13.2 °C |
| 1960 | 13.0 °C |
| 1961 | 13.6 °C |
| 1962 | 12.8 °C |
| 1963 | 13.6 °C |
| 1964 | 12.5 °C |
| 1965 | 13.3 °C |
| 1966 | 13.2 °C |
| 1967 | 13.6 °C |
| 1968 | 13.1 °C |
| 1969 | 13.2 °C |
| 1970 | 12.7 °C |
| 1971 | 13.0 °C |
| 1972 | 14.0 °C |
| 1973 | 13.2 °C |
| 1974 | 13.4 °C |
| 1975 | 13.1 °C |
| 1976 | 13.8 °C |
| 1977 | 13.2 °C |
| 1978 | 13.8 °C |
| 1979 | 14.2 °C |
| 1980 | 13.3 °C |
| 1981 | 13.9 °C |
| 1982 | 13.4 °C |
| 1983 | 14.2 °C |
| 1984 | 12.9 °C |
| 1985 | 13.1 °C |
| 1986 | 13.2 °C |
| 1987 | 13.8 °C |
| 1988 | 13.0 °C |
| 1989 | 14.1 °C |
| 1990 | 14.3 °C |
| 1991 | 13.0 °C |
| 1992 | 13.9 °C |
| 1993 | 13.6 °C |
| 1994 | 13.9 °C |
| 1995 | 13.9 °C |
| 1996 | 13.3 °C |
| 1997 | 14.7 °C |
| 1998 | 13.3 °C |
| 1999 | 13.1 °C |
| 2000 | 14.3 °C |
| 2001 | 13.0 °C |
| 2002 | 13.5 °C |
| 2003 | 13.9 °C |
| 2004 | 14.7 °C |
| 2005 | 14.2 °C |
| 2006 | 13.6 °C |
| 2007 | 13.5 °C |
| 2008 | 12.8 °C |
| 2009 | 14.1 °C |
| 2010 | 13.3 °C |
| 2011 | 12.9 °C |
| 2012 | 13.1 °C |
| 2013 | 14.0 °C |
| 2014 | 14.9 °C |
| 2015 | 14.8 °C |
| 2016 | 15.2 °C |
| 2017 | 14.1 °C |
| 2018 | 14.2 °C |
| 2019 | 14.6 °C |
| 2020 | 14.2 °C |
| 2021 | 14.1 °C |
| 2022 | 14.2 °C |
| 2023 | 14.3 °C |
| 2024 | 14.9 °C |
What this means for you: Since 1953, Seaside's last spring frost has come about 3 days earlier per decade, on average. The frost-free season has grown by about 3 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.
Source: daily records from Astoria Ap (Port Of) (NOAA GHCN-Daily). Years with too many missing days are left out.