When to plant in Greenville, IL

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

Safe to plant out

Apr 19

1 year in 10 has a later frost

Average last frost

Apr 9

about a 50% chance of a later one

Average first fall frost

Oct 19

1 year in 10 by Oct 6

Frost-free days

188

median, 1991–2020

Station used: Hillsboro · 30.7 km away · station 192 m, town 188 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 22 – Mar 8	Apr 19 – May 3	Jun 13
Sweet pepper	Feb 8 – Feb 22	Apr 19 – May 3	Jun 18
Lettuce (leaf)	Feb 5 – Feb 12	Mar 12 – Mar 26	Apr 21
Peas	—	Mar 10 – Apr 7	May 4
Bush beans	—	Apr 12 – May 3	Jun 1
Carrot	—	Mar 19 – Apr 30	May 18
Beet	—	Mar 19 – Apr 30	May 8
Potato	—	Mar 19 – Apr 9	May 28
Kale	Feb 3 – Feb 17	Mar 17 – Mar 31	Apr 29
Broccoli	Jan 29 – Feb 12	Mar 12 – Apr 2	May 11
Cucumber	Mar 22 – Mar 29	Apr 19 – May 3	Jun 8
Summer squash and zucchini	Mar 22 – Mar 29	Apr 19 – May 3	Jun 3
Winter squash	Mar 22 – Mar 29	Apr 19 – May 3	Jul 8
Sweet corn	—	Apr 12 – May 3	Jun 11
Onion (from sets)	—	Mar 12 – Apr 2	Jun 10
Garlic	—	Oct 5 – Nov 2 (fall)	following summer
Spinach	—	Mar 10 – Apr 7	Apr 17
Basil	Mar 8 – Mar 22	Apr 19 – May 3	Jun 15

Plan all 65 crops for Greenville

Greenville'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
1897	Apr 20
1898	Apr 7
1899	Apr 9
1900	Apr 12
1901	Apr 21
1902	Apr 15
1903	May 1
1904	Apr 22
1905	Apr 22
1906	May 7
1907	May 4
1908	Apr 30
1909	May 2
1910	Apr 25
1911	May 3
1912	Apr 19
1913	Apr 5
1914	Apr 12
1915	Apr 13
1916	Apr 10
1917	May 5
1918	Apr 14
1919	Apr 26
1920	May 14
1921	Apr 18
1922	Apr 20
1923	Apr 18
1924	Apr 10
1925	May 25
1926	Apr 26
1927	Apr 25
1928	Apr 28
1929	May 2
1930	Apr 25
1931	Apr 22
1932	Apr 27
1933	Apr 27
1934	Apr 28
1935	Apr 16
1936	Apr 23
1937	Apr 11
1938	Apr 10
1939	Apr 13
1940	Apr 14
1941	Mar 29
1942	Apr 12
1943	Apr 21
1944	May 6
1945	Apr 19
1946	Apr 27
1947	Apr 17
1948	Apr 3
1949	Apr 19
1950	Apr 21
1951	Apr 23
1952	Apr 16
1953	Apr 20
1955	Apr 8
1956	Apr 24
1957	Apr 15
1958	Apr 8
1959	Apr 22
1960	May 12
1961	Apr 16
1962	Apr 16
1963	May 1
1964	Apr 9
1965	Apr 3
1966	May 10
1967	May 3
1968	Apr 25
1969	Apr 6
1970	Apr 7
1971	May 4
1972	Apr 9
1973	Apr 13
1974	Apr 9
1975	Apr 12
1976	May 3
1977	Apr 6
1979	Apr 10
1980	Apr 25
1981	Apr 6
1982	Apr 21
1983	Apr 20
1984	Apr 1
1985	Apr 9
1986	Apr 23
1987	Apr 4
1988	Mar 30
1989	Apr 13
1990	Apr 18
1991	Mar 31
1992	Apr 5
1993	Apr 3
1994	Apr 7
1995	Apr 6
1996	Apr 16
1997	Apr 17
1998	Apr 5
1999	Mar 27
2000	Apr 12
2001	Apr 19
2002	Apr 6
2003	Apr 10
2004	Apr 13
2005	Mar 20
2006	Apr 9
2007	Apr 13
2008	Apr 29
2009	Apr 11
2010	Mar 29
2011	Mar 31
2012	Apr 12
2013	Apr 20
2014	Apr 15
2016	Apr 13
2017	Mar 22
2018	Apr 20
2019	Apr 15
2020	Apr 18
2022	Apr 19
2025	Apr 12
2026	Mar 29

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1897	196
1898	198
1899	173
1900	203
1901	166
1902	196
1903	175
1904	183
1905	172
1906	155
1907	161
1908	180
1909	162
1910	185
1911	181
1912	186
1914	197
1915	175
1916	183
1917	153
1918	200
1919	174
1920	167
1921	172
1922	180
1923	184
1924	194
1925	137
1926	177
1927	171
1928	148
1929	173
1930	174
1931	178
1932	161
1933	180
1934	182
1935	170
1936	183
1937	185
1938	196
1939	183
1940	206
1941	212
1942	168
1943	178
1944	182
1945	172
1946	167
1947	204
1948	197
1949	188
1950	166
1951	191
1952	169
1953	187
1955	208
1956	185
1957	178
1958	175
1959	178
1960	160
1961	169
1962	190
1963	181
1964	183
1965	203
1966	159
1967	160
1968	161
1970	185
1971	183
1972	192
1973	198
1974	175
1975	172
1976	165
1977	193
1979	182
1980	162
1981	199
1982	182
1983	155
1984	214
1985	175
1986	200
1987	182
1988	188
1989	188
1990	175
1991	173
1992	194
1993	189
1997	187
1998	200
1999	204
2001	180
2003	174
2004	174
2005	219
2006	185
2007	198
2008	181
2009	182
2010	213
2011	224
2012	178
2013	184
2014	199
2016	210
2017	220
2018	178
2019	198
2020	171
2022	181
2025	203

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

See the data as a table

Year	Growing-season temperature
1897	20.6 °C
1898	20.7 °C
1899	20.9 °C
1900	21.3 °C
1901	21.1 °C
1902	20.0 °C
1903	20.2 °C
1904	19.0 °C
1905	20.8 °C
1906	21.2 °C
1907	18.4 °C
1908	20.5 °C
1909	20.0 °C
1910	19.1 °C
1911	21.2 °C
1912	20.6 °C
1913	21.7 °C
1914	21.3 °C
1915	19.4 °C
1916	19.8 °C
1917	18.7 °C
1918	19.9 °C
1919	21.1 °C
1920	19.6 °C
1921	22.1 °C
1922	21.6 °C
1923	20.4 °C
1924	19.4 °C
1925	22.0 °C
1926	20.7 °C
1927	20.0 °C
1928	19.6 °C
1929	20.2 °C
1930	22.0 °C
1931	21.5 °C
1932	21.0 °C
1933	22.1 °C
1934	21.9 °C
1935	19.6 °C
1936	22.3 °C
1937	20.6 °C
1938	21.0 °C
1939	20.6 °C
1940	19.8 °C
1941	21.9 °C
1942	20.5 °C
1943	20.6 °C
1944	21.1 °C
1945	19.5 °C
1946	20.0 °C
1947	20.4 °C
1948	20.6 °C
1949	20.2 °C
1950	18.9 °C
1951	19.4 °C
1952	21.0 °C
1953	21.1 °C
1955	22.1 °C
1956	20.5 °C
1957	20.7 °C
1958	19.8 °C
1959	21.1 °C
1960	20.2 °C
1961	19.3 °C
1962	20.2 °C
1963	20.4 °C
1964	21.2 °C
1965	20.8 °C
1966	19.4 °C
1967	19.1 °C
1968	19.9 °C
1969	20.2 °C
1970	21.0 °C
1971	20.2 °C
1972	20.5 °C
1973	19.9 °C
1974	19.4 °C
1975	19.1 °C
1976	19.8 °C
1977	21.3 °C
1980	21.7 °C
1981	20.5 °C
1988	22.5 °C
1989	20.3 °C
1990	20.7 °C
1991	22.3 °C
1992	21.3 °C
1995	20.0 °C
1996	19.7 °C
2007	22.2 °C
2008	20.6 °C
2009	19.9 °C
2013	20.9 °C
2014	20.7 °C
2016	21.4 °C
2017	21.2 °C
2018	21.5 °C
2019	21.3 °C
2020	20.6 °C
2021	21.3 °C
2022	21.2 °C
2025	21.4 °C
2026	22.5 °C

What this means for you: Since 1897, Greenville'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 Hillsboro (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Highland Vandalia Hillsboro Carlyle Beckemeyer Breese