When to plant in Sunnyslope, WA

Planting dates worked out from Sunnyslope's own frost records, not a generic zone chart.

Safe to plant out

Apr 17

1 year in 10 has a later frost

Average last frost

Apr 3

about a 50% chance of a later one

Average first fall frost

Oct 28

1 year in 10 by Oct 14

Frost-free days

209

median, 1991–2020

Station used: Wenatchee · 5.3 km away · station 191 m, town 249 m. How we match towns to stations

This season

Plan your garden.

Build my Sunnyslope plan

Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Feb 24 – Mar 10	Apr 21 – May 5	Jun 15
Sweet pepper	Feb 10 – Feb 24	Apr 21 – May 5	Jun 20
Lettuce (leaf)	Feb 7 – Feb 14	Mar 14 – Mar 28	Apr 23
Peas	—	Mar 14 – Apr 11	May 8
Bush beans	—	Apr 14 – May 5	Jun 3
Carrot	—	Mar 25 – May 6	May 24
Beet	—	Mar 25 – May 6	May 14
Potato	—	Mar 25 – Apr 15	Jun 3
Kale	Feb 7 – Feb 21	Mar 21 – Apr 4	May 3
Broccoli	Jan 31 – Feb 14	Mar 14 – Apr 4	May 13
Cucumber	Mar 24 – Mar 31	Apr 21 – May 5	Jun 10
Summer squash and zucchini	Mar 24 – Mar 31	Apr 21 – May 5	Jun 5
Winter squash	Mar 24 – Mar 31	Apr 21 – May 5	Jul 10
Sweet corn	—	Apr 14 – May 5	Jun 13
Onion (from sets)	—	Mar 14 – Apr 4	Jun 12
Garlic	—	Oct 7 – Nov 4 (fall)	following summer
Spinach	—	Mar 14 – Apr 11	Apr 21
Basil	Mar 10 – Mar 24	Apr 21 – May 5	Jun 17

Plan all 65 crops for Sunnyslope

Sunnyslope'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
1931	Apr 20
1932	Apr 20
1933	May 8
1934	Apr 3
1935	Apr 29
1936	Apr 5
1937	Apr 8
1938	Apr 2
1939	Apr 16
1940	Apr 5
1941	Mar 20
1942	Mar 29
1943	Mar 23
1944	Apr 18
1945	Apr 12
1946	May 1
1947	Mar 26
1949	Apr 1
1950	Apr 24
1951	Apr 22
1952	Apr 29
1953	Apr 14
1954	May 1
1955	Apr 28
1956	Apr 6
1957	Mar 27
1958	Mar 27
1959	Apr 9
1960	Apr 21
1961	Apr 20
1962	May 1
1963	Apr 2
1964	May 14
1965	Apr 4
1966	Apr 19
1967	Apr 14
1968	Apr 27
1969	Mar 25
1970	Apr 27
1972	Apr 30
1973	Apr 8
1974	Apr 13
1975	Apr 7
1976	Apr 23
1977	Apr 17
1978	Apr 17
1979	Apr 20
1980	Apr 7
1981	Apr 14
1982	May 7
1983	Apr 12
1984	Apr 11
1985	Apr 24
1986	Apr 24
1987	Mar 30
1988	Apr 9
1989	Apr 3
1991	Mar 27
1992	Mar 29
1993	Mar 26
1994	Mar 25
1995	Apr 15
1996	Apr 21
1997	Apr 12
1998	Mar 29
1999	Apr 11
2000	Mar 24
2001	May 2
2002	Apr 3
2003	Apr 4
2004	Mar 19
2008	Apr 22
2009	Apr 4
2010	Apr 11
2011	Apr 7
2012	Apr 8
2013	Mar 27
2014	Apr 1
2015	Mar 6
2016	Mar 19
2017	Apr 12
2018	Apr 3
2019	Mar 20
2020	Apr 14
2021	Apr 12
2022	Apr 16
2023	Apr 5
2024	May 1
2025	Mar 20

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1931	170
1932	171
1933	138
1934	197
1935	166
1936	159
1937	208
1938	196
1939	195
1940	204
1941	222
1942	197
1943	208
1944	198
1945	191
1947	223
1949	189
1950	159
1951	175
1952	181
1953	190
1954	152
1955	185
1956	196
1957	206
1958	210
1959	203
1960	171
1961	182
1962	189
1963	199
1964	156
1965	232
1966	195
1967	201
1968	171
1969	201
1970	138
1972	149
1973	205
1974	174
1975	198
1976	174
1977	169
1978	187
1979	193
1980	198
1981	189
1982	163
1983	208
1984	186
1985	157
1986	198
1987	231
1988	200
1989	208
1991	214
1992	199
1993	223
1994	222
1995	196
1996	178
1997	212
1998	214
1999	187
2000	213
2001	178
2002	203
2003	209
2004	219
2008	171
2009	189
2010	211
2011	201
2012	195
2013	221
2014	224
2015	242
2016	242
2017	205
2018	218
2019	203
2020	194
2021	200
2022	200
2023	205
2024	189

Each year's average temperature, April to SeptemberLong-term trend

See the data as a table

Year	Growing-season temperature
1931	18.3 °C
1932	17.4 °C
1933	16.9 °C
1934	18.7 °C
1935	17.4 °C
1936	18.4 °C
1937	17.6 °C
1938	18.9 °C
1939	18.9 °C
1940	19.6 °C
1941	18.5 °C
1942	18.7 °C
1943	17.9 °C
1944	19.2 °C
1945	18.1 °C
1947	18.4 °C
1948	17.8 °C
1949	18.4 °C
1950	17.8 °C
1951	18.4 °C
1952	18.4 °C
1953	16.9 °C
1954	17.0 °C
1955	16.9 °C
1956	17.7 °C
1957	18.6 °C
1958	19.9 °C
1959	17.3 °C
1960	17.8 °C
1961	18.8 °C
1962	17.7 °C
1963	18.2 °C
1964	17.1 °C
1965	18.2 °C
1966	18.3 °C
1967	19.1 °C
1968	18.4 °C
1969	19.2 °C
1970	18.9 °C
1971	18.4 °C
1972	17.7 °C
1973	18.8 °C
1974	18.3 °C
1975	18.0 °C
1976	18.0 °C
1977	18.8 °C
1978	18.2 °C
1979	19.6 °C
1980	18.7 °C
1981	18.5 °C
1982	18.3 °C
1983	18.5 °C
1984	17.6 °C
1985	19.0 °C
1986	19.0 °C
1987	19.6 °C
1988	18.5 °C
1989	19.5 °C
1991	18.4 °C
1992	19.6 °C
1993	18.0 °C
1994	19.9 °C
1995	18.6 °C
1996	18.0 °C
1997	18.3 °C
1998	19.9 °C
1999	17.8 °C
2000	18.8 °C
2001	18.6 °C
2002	19.0 °C
2003	19.6 °C
2004	20.0 °C
2005	19.4 °C
2006	19.5 °C
2008	18.4 °C
2009	19.4 °C
2010	17.8 °C
2011	17.6 °C
2012	19.0 °C
2013	19.7 °C
2014	19.7 °C
2015	20.3 °C
2016	19.7 °C
2017	19.4 °C
2018	19.5 °C
2019	19.0 °C
2020	19.1 °C
2021	20.2 °C
2022	18.7 °C
2023	20.0 °C
2024	19.8 °C
2025	21.1 °C

What this means for you: Since 1931, Sunnyslope's last spring frost has come about 1 day 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 Wenatchee (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

West Wenatchee Wenatchee East Wenatchee Bench East Wenatchee South Wenatchee Cashmere