When to plant in Forsyth, IL

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

Safe to plant out

Apr 21

1 year in 10 has a later frost

Average last frost

Apr 13

about a 50% chance of a later one

Average first fall frost

Oct 20

1 year in 10 by Oct 6

Frost-free days

186

median, 1991–2020

Station used: Decatur Wtp · 11.5 km away · station 195 m, town 207 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 24 – Mar 10	Apr 21 – May 5	Jun 15
Sweet pepper	Feb 10 – Feb 24	Apr 21 – May 5	Jun 20
Lettuce (leaf)	Feb 10 – Feb 17	Mar 17 – Mar 31	Apr 26
Peas	—	Mar 17 – Apr 14	May 11
Bush beans	—	Apr 14 – May 5	Jun 3
Carrot	—	Mar 26 – May 7	May 25
Beet	—	Mar 26 – May 7	May 15
Potato	—	Mar 26 – Apr 16	Jun 4
Kale	Feb 10 – Feb 24	Mar 24 – Apr 7	May 6
Broccoli	Feb 3 – Feb 17	Mar 17 – Apr 7	May 16
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 17 – Apr 7	Jun 15
Garlic	—	Oct 6 – Nov 3 (fall)	following summer
Spinach	—	Mar 17 – Apr 14	Apr 24
Basil	Mar 10 – Mar 24	Apr 21 – May 5	Jun 17

Plan all 65 crops for Forsyth

Forsyth'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	Jun 6
1895	May 21
1896	Apr 4
1897	May 1
1898	Apr 7
1899	Apr 16
1901	Apr 21
1902	Apr 15
1903	May 1
1904	Apr 27
1905	Apr 22
1906	May 7
1907	May 11
1908	May 2
1909	May 2
1910	May 4
1911	May 3
1912	Apr 19
1913	Apr 15
1914	Apr 20
1915	Apr 13
1916	Apr 10
1917	May 5
1918	May 2
1919	Apr 26
1920	Apr 14
1921	Apr 18
1922	Apr 20
1923	May 10
1924	Apr 10
1925	May 25
1926	Apr 26
1927	Apr 24
1928	Apr 28
1929	May 21
1930	Apr 25
1931	Apr 27
1932	Apr 27
1933	Apr 27
1934	Apr 25
1935	Apr 16
1936	Apr 23
1937	Apr 16
1938	Apr 10
1939	Apr 13
1940	May 4
1941	Mar 29
1942	Apr 20
1943	Apr 21
1944	May 7
1945	May 1
1946	Apr 27
1947	Apr 17
1948	Apr 9
1949	Apr 19
1950	Apr 21
1951	Apr 23
1952	Apr 16
1953	Apr 20
1954	May 4
1955	Apr 8
1956	Apr 24
1957	Apr 15
1958	Apr 30
1959	Apr 22
1960	May 13
1961	May 3
1962	Apr 16
1963	May 1
1964	Apr 9
1965	Apr 3
1966	May 10
1967	May 3
1968	Apr 25
1969	Apr 24
1970	Apr 5
1971	Apr 30
1972	Apr 25
1973	Apr 13
1974	Apr 24
1975	Apr 20
1976	May 7
1977	May 10
1978	May 2
1979	May 26
1980	May 9
1981	May 12
1982	Apr 22
1983	May 9
1984	Apr 6
1985	Apr 10
1987	Apr 9
1988	Apr 30
1989	May 7
1990	Apr 18
1991	Mar 31
1992	May 6
1993	Apr 22
1994	Apr 7
1995	Apr 5
1996	Apr 14
1997	Apr 18
1999	Mar 29
2000	Apr 12
2001	Apr 18
2002	Apr 6
2003	Apr 10
2004	Apr 15
2005	May 3
2006	Apr 9
2007	Apr 13
2008	Apr 15
2009	Apr 9
2010	Apr 9
2011	Apr 21
2012	Apr 12
2013	Apr 20
2014	Apr 16
2015	Apr 4
2016	Apr 12
2017	Mar 23
2018	Apr 20
2019	Apr 15
2020	Apr 18
2021	Apr 22
2022	Apr 19
2023	Apr 24
2024	Apr 6
2025	Apr 10

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1894	124
1895	140
1896	197
1897	142
1898	190
1899	163
1901	149
1902	181
1903	169
1904	169
1905	172
1906	155
1907	154
1908	162
1909	162
1910	171
1911	173
1912	163
1913	188
1914	189
1915	177
1916	158
1917	153
1918	182
1919	173
1920	196
1921	172
1922	179
1923	162
1924	194
1925	137
1926	177
1927	172
1928	148
1929	154
1930	174
1931	187
1932	166
1933	180
1934	185
1935	170
1936	183
1937	174
1938	196
1939	183
1940	186
1941	212
1942	160
1943	178
1944	161
1945	160
1946	167
1947	202
1948	190
1949	188
1950	186
1951	190
1952	169
1953	191
1954	169
1955	193
1956	197
1957	186
1958	153
1959	172
1960	159
1961	152
1962	190
1963	180
1964	179
1965	208
1966	159
1967	168
1968	182
1969	172
1970	193
1971	187
1972	172
1973	203
1974	160
1975	165
1976	155
1977	155
1978	158
1979	136
1980	148
1981	143
1982	177
1983	135
1984	176
1987	176
1988	157
1989	141
1990	175
1991	172
1992	163
1993	170
1994	200
1995	170
1996	187
1997	186
1999	202
2000	178
2001	170
2002	196
2003	174
2004	183
2005	190
2006	185
2007	202
2008	194
2009	205
2010	202
2011	203
2012	178
2013	184
2014	196
2015	196
2016	213
2017	219
2018	178
2019	179
2020	180
2021	193
2022	181
2023	188
2024	192
2025	196

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

See the data as a table

Year	Growing-season temperature
1894	20.4 °C
1895	20.9 °C
1896	21.2 °C
1897	19.7 °C
1898	20.1 °C
1899	20.5 °C
1901	20.3 °C
1902	19.1 °C
1903	19.5 °C
1904	18.7 °C
1905	20.1 °C
1906	20.4 °C
1907	17.8 °C
1908	20.1 °C
1909	19.2 °C
1910	19.0 °C
1911	20.7 °C
1912	20.0 °C
1913	21.0 °C
1914	21.2 °C
1915	19.2 °C
1916	19.9 °C
1917	18.5 °C
1918	19.4 °C
1919	20.5 °C
1920	19.8 °C
1921	21.9 °C
1922	21.1 °C
1923	20.2 °C
1924	18.8 °C
1925	21.4 °C
1926	19.6 °C
1927	19.1 °C
1928	18.9 °C
1929	19.4 °C
1930	21.1 °C
1931	21.5 °C
1932	20.6 °C
1933	21.8 °C
1934	21.8 °C
1935	19.5 °C
1936	21.9 °C
1937	20.2 °C
1938	20.8 °C
1939	20.6 °C
1940	19.8 °C
1941	21.5 °C
1942	20.1 °C
1943	20.0 °C
1944	20.7 °C
1945	18.8 °C
1946	19.4 °C
1947	19.9 °C
1948	20.6 °C
1949	20.4 °C
1950	18.8 °C
1951	19.2 °C
1952	20.9 °C
1953	21.0 °C
1954	21.7 °C
1955	21.5 °C
1956	20.0 °C
1957	20.2 °C
1958	19.7 °C
1959	21.4 °C
1960	20.1 °C
1961	19.0 °C
1962	20.5 °C
1963	20.3 °C
1964	21.0 °C
1965	20.6 °C
1966	19.4 °C
1967	19.1 °C
1968	20.0 °C
1969	20.3 °C
1970	20.6 °C
1971	19.7 °C
1972	20.0 °C
1973	20.0 °C
1974	19.3 °C
1975	20.1 °C
1976	19.6 °C
1977	21.2 °C
1978	20.0 °C
1979	19.6 °C
1980	20.8 °C
1981	19.7 °C
1982	19.1 °C
1983	20.3 °C
1984	19.4 °C
1985	19.9 °C
1987	21.0 °C
1988	20.8 °C
1989	19.1 °C
1990	19.5 °C
1992	18.9 °C
1993	19.8 °C
1994	19.5 °C
1995	20.1 °C
1996	19.5 °C
1999	20.9 °C
2000	21.1 °C
2001	21.1 °C
2002	21.4 °C
2003	20.0 °C
2004	20.1 °C
2005	21.4 °C
2006	20.8 °C
2007	21.6 °C
2008	20.3 °C
2009	20.0 °C
2010	21.3 °C
2011	20.2 °C
2012	21.1 °C
2013	19.5 °C
2014	19.0 °C
2015	20.1 °C
2016	20.4 °C
2017	20.3 °C
2018	20.8 °C
2019	20.4 °C
2020	19.5 °C
2021	20.2 °C
2022	20.2 °C
2023	20.2 °C
2024	20.2 °C
2025	20.4 °C

What this means for you: Since 1894, Forsyth's last spring frost has come about 1 day earlier per decade, on average. The frost-free season has grown by about 2 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Decatur Wtp (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Warrensburg Decatur Maroa Harristown Long Creek Mount Zion