When to plant in Winchester, IL

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

Safe to plant out

Apr 22

1 year in 10 has a later frost

Average last frost

Apr 12

about a 50% chance of a later one

Average first fall frost

Oct 19

1 year in 10 by Oct 7

Frost-free days

183

median, 1991–2020

Station used: White Hall 1 E · 22.0 km away · station 177 m, town 165 m. How we match towns to stations

This season

Plan your garden.

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Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Feb 25 – Mar 11	Apr 22 – May 6	Jun 16
Sweet pepper	Feb 11 – Feb 25	Apr 22 – May 6	Jun 21
Lettuce (leaf)	Feb 12 – Feb 19	Mar 19 – Apr 2	Apr 28
Peas	—	Mar 19 – Apr 16	May 13
Bush beans	—	Apr 15 – May 6	Jun 4
Carrot	—	Mar 28 – May 9	May 27
Beet	—	Mar 28 – May 9	May 17
Potato	—	Mar 28 – Apr 18	Jun 6
Kale	Feb 12 – Feb 26	Mar 26 – Apr 9	May 8
Broccoli	Feb 5 – Feb 19	Mar 19 – Apr 9	May 18
Cucumber	Mar 25 – Apr 1	Apr 22 – May 6	Jun 11
Summer squash and zucchini	Mar 25 – Apr 1	Apr 22 – May 6	Jun 6
Winter squash	Mar 25 – Apr 1	Apr 22 – May 6	Jul 11
Sweet corn	—	Apr 15 – May 6	Jun 14
Onion (from sets)	—	Mar 19 – Apr 9	Jun 17
Garlic	—	Oct 5 – Nov 2 (fall)	following summer
Spinach	—	Mar 19 – Apr 16	Apr 26
Basil	Mar 11 – Mar 25	Apr 22 – May 6	Jun 18

Plan all 65 crops for Winchester

Winchester'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
1894	Mar 30
1896	Apr 4
1897	Apr 20
1898	Apr 7
1903	May 1
1904	Apr 21
1905	Apr 22
1906	May 7
1907	May 3
1909	Apr 13
1910	Apr 24
1911	May 3
1912	Apr 19
1913	Apr 5
1914	Apr 13
1915	Apr 4
1916	Apr 10
1917	Apr 15
1918	May 1
1919	Apr 26
1920	May 14
1921	Apr 18
1922	Apr 18
1923	May 10
1924	Apr 10
1925	May 25
1926	Apr 26
1927	Apr 25
1928	Apr 28
1929	Apr 12
1930	Apr 25
1932	Apr 27
1933	Apr 27
1934	Apr 25
1935	Apr 16
1936	Apr 23
1937	Apr 11
1938	Apr 10
1939	Apr 20
1940	Apr 21
1941	Mar 29
1942	Apr 11
1943	Apr 21
1944	May 7
1945	Apr 19
1946	Apr 27
1947	Apr 17
1948	Mar 28
1949	Apr 19
1950	Apr 26
1951	Apr 23
1952	Apr 16
1953	Apr 21
1954	May 4
1955	Apr 8
1956	Apr 24
1957	Apr 14
1958	Apr 8
1959	Apr 22
1960	Apr 10
1961	Apr 16
1962	Apr 16
1963	May 1
1964	Apr 9
1965	Apr 2
1966	May 10
1967	Apr 24
1968	Apr 25
1969	Mar 31
1970	Apr 7
1971	Apr 10
1972	Apr 9
1973	Apr 13
1974	Apr 9
1975	Apr 7
1976	May 4
1977	Apr 6
1978	May 1
1979	Apr 7
1980	Apr 16
1981	Apr 6
1982	Apr 21
1983	Apr 20
1984	Apr 1
1985	Apr 10
1986	Apr 23
1987	Apr 12
1988	Apr 28
1989	Apr 14
1990	Apr 19
1991	Mar 31
1992	Apr 6
1993	Apr 18
1994	Apr 8
1995	Apr 6
1996	Apr 11
1997	Apr 17
1998	Apr 5
1999	Mar 29
2000	Apr 9
2001	Apr 19
2002	Apr 6
2004	Apr 14
2005	May 4
2007	Apr 14
2008	May 1
2009	Apr 10
2010	Mar 27
2011	Apr 6
2012	Apr 13
2013	Apr 21
2014	Apr 16
2015	Apr 24
2016	Apr 13
2017	Mar 23
2018	Apr 18
2019	Apr 20
2020	Apr 19
2021	Apr 23
2022	Apr 20
2023	Apr 24
2024	Mar 29
2025	Apr 9
2026	Mar 29

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1896	197
1897	196
1905	172
1907	158
1909	181
1910	180
1911	171
1912	163
1913	169
1914	196
1915	184
1916	183
1917	173
1918	141
1919	174
1920	139
1921	172
1922	181
1923	162
1924	172
1925	133
1926	177
1927	171
1929	193
1930	174
1932	161
1933	173
1934	185
1936	183
1937	185
1938	196
1939	163
1940	157
1941	212
1942	168
1943	178
1944	200
1945	172
1946	167
1947	202
1948	202
1949	163
1950	161
1951	191
1952	169
1953	190
1954	176
1955	193
1956	197
1957	188
1958	204
1959	178
1960	192
1961	200
1962	190
1963	184
1964	183
1965	204
1966	159
1967	169
1968	182
1969	199
1970	191
1971	207
1972	188
1973	205
1974	176
1975	201
1976	164
1977	189
1978	159
1979	185
1980	178
1981	199
1982	182
1983	176
1984	214
1985	174
1986	174
1987	173
1988	160
1989	188
1990	174
1991	198
1992	193
1993	174
1994	200
1995	201
1996	182
1997	183
1998	201
1999	189
2000	180
2001	180
2002	190
2004	173
2005	174
2007	197
2008	179
2009	183
2010	215
2011	204
2012	177
2013	183
2014	198
2015	176
2016	210
2017	219
2018	180
2019	174
2020	168
2021	192
2022	170
2023	188
2024	200
2025	198

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

See the data as a table

Year	Growing-season temperature
1896	20.6 °C
1897	19.7 °C
1902	20.7 °C
1904	18.8 °C
1905	20.6 °C
1906	20.7 °C
1907	18.0 °C
1909	19.5 °C
1910	18.8 °C
1911	20.8 °C
1912	20.1 °C
1913	21.8 °C
1914	21.5 °C
1915	19.5 °C
1916	20.2 °C
1917	18.6 °C
1918	20.1 °C
1919	20.6 °C
1920	19.5 °C
1921	22.1 °C
1922	21.9 °C
1923	20.3 °C
1924	18.8 °C
1925	21.3 °C
1926	19.7 °C
1927	19.3 °C
1928	19.6 °C
1929	19.1 °C
1930	21.6 °C
1932	21.1 °C
1933	21.7 °C
1934	22.5 °C
1935	19.7 °C
1936	22.6 °C
1937	20.4 °C
1938	21.1 °C
1939	21.1 °C
1940	20.1 °C
1941	21.8 °C
1942	20.5 °C
1943	20.7 °C
1944	21.0 °C
1945	19.5 °C
1946	20.1 °C
1947	20.7 °C
1948	20.9 °C
1949	20.4 °C
1950	19.3 °C
1951	19.3 °C
1952	21.0 °C
1953	21.4 °C
1954	22.2 °C
1955	21.7 °C
1956	20.8 °C
1957	20.8 °C
1958	19.9 °C
1959	21.4 °C
1960	20.4 °C
1961	19.1 °C
1962	20.2 °C
1963	20.2 °C
1964	21.1 °C
1965	20.6 °C
1966	19.3 °C
1967	19.0 °C
1968	19.6 °C
1969	20.1 °C
1970	20.5 °C
1971	20.0 °C
1973	20.3 °C
1974	19.9 °C
1975	20.5 °C
1976	19.9 °C
1977	21.8 °C
1978	20.8 °C
1979	19.9 °C
1980	21.5 °C
1981	20.5 °C
1982	20.0 °C
1983	21.1 °C
1984	19.0 °C
1985	19.4 °C
1986	20.2 °C
1987	20.0 °C
1988	20.2 °C
1989	18.9 °C
1990	19.0 °C
1991	21.0 °C
1992	18.5 °C
1993	19.0 °C
1994	19.2 °C
1995	19.4 °C
1996	19.1 °C
1997	18.7 °C
1998	20.6 °C
1999	19.9 °C
2000	19.5 °C
2001	20.1 °C
2002	20.2 °C
2004	19.2 °C
2005	20.8 °C
2007	20.6 °C
2008	18.9 °C
2009	18.7 °C
2010	21.1 °C
2011	20.0 °C
2012	20.7 °C
2013	19.3 °C
2014	19.2 °C
2015	20.1 °C
2016	20.5 °C
2017	20.1 °C
2018	20.8 °C
2019	20.3 °C
2020	19.4 °C
2021	20.1 °C
2022	19.8 °C
2023	20.0 °C
2024	20.6 °C
2025	20.4 °C
2026	21.4 °C

What this means for you: Since 1894, Winchester's last spring frost has come about 1 day earlier per decade, on average. The frost-free season has grown by about 1 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from White Hall 1 E (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Roodhouse South Jacksonville White Hall Jacksonville Meredosia Griggsville