When to plant in Saint Ann, MO

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

Safe to plant out

Apr 15

1 year in 10 has a later frost

Average last frost

Apr 2

about a 50% chance of a later one

Average first fall frost

Nov 3

1 year in 10 by Oct 23

Frost-free days

212

median, 1991–2020

Station used: St Louis Lambert Intl Ap · 2.9 km away · station 162 m, town 177 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 18 – Mar 4	Apr 15 – Apr 29	Jun 9
Sweet pepper	Feb 4 – Feb 18	Apr 15 – Apr 29	Jun 14
Lettuce (leaf)	Jan 29 – Feb 5	Mar 5 – Mar 19	Apr 14
Peas	—	Mar 5 – Apr 2	Apr 29
Bush beans	—	Apr 8 – Apr 29	May 28
Carrot	—	Mar 15 – Apr 26	May 14
Beet	—	Mar 15 – Apr 26	May 4
Potato	—	Mar 15 – Apr 5	May 24
Kale	Jan 29 – Feb 12	Mar 12 – Mar 26	Apr 24
Broccoli	Jan 22 – Feb 5	Mar 5 – Mar 26	May 4
Cucumber	Mar 18 – Mar 25	Apr 15 – Apr 29	Jun 4
Summer squash and zucchini	Mar 18 – Mar 25	Apr 15 – Apr 29	May 30
Winter squash	Mar 18 – Mar 25	Apr 15 – Apr 29	Jul 4
Sweet corn	—	Apr 8 – Apr 29	Jun 7
Onion (from sets)	—	Mar 5 – Mar 26	Jun 3
Garlic	—	Oct 20 – Nov 17 (fall)	following summer
Spinach	—	Mar 5 – Apr 2	Apr 12
Basil	Mar 4 – Mar 18	Apr 15 – Apr 29	Jun 11

Plan all 65 crops for Saint Ann

Saint Ann'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
1939	Apr 12
1940	Apr 13
1941	Mar 29
1942	Mar 30
1943	Apr 15
1944	Apr 5
1945	Apr 5
1946	Mar 11
1947	Mar 30
1948	Mar 28
1949	Apr 19
1950	Apr 14
1951	Apr 17
1952	Apr 11
1953	Apr 20
1954	Apr 3
1955	Mar 29
1956	Apr 24
1957	Apr 14
1958	Mar 26
1959	Mar 28
1960	Apr 10
1961	May 2
1962	Apr 16
1963	Mar 22
1964	Apr 9
1965	Mar 31
1966	May 10
1967	Apr 24
1968	Apr 6
1969	Mar 31
1970	Apr 5
1971	Apr 7
1972	Apr 9
1973	Apr 13
1974	Apr 9
1975	Apr 7
1976	May 3
1977	Mar 24
1978	Mar 27
1979	Apr 6
1980	Apr 14
1981	Mar 24
1982	Apr 11
1983	Apr 20
1984	Apr 1
1985	Apr 9
1986	Apr 22
1987	Apr 4
1988	Mar 30
1989	Apr 11
1990	Apr 12
1991	Mar 30
1992	Apr 2
1993	Apr 2
1994	Apr 7
1995	Apr 5
1996	Apr 9
1997	Apr 17
1998	Mar 24
1999	Mar 27
2000	Apr 8
2001	Apr 1
2002	Apr 5
2003	Mar 30
2004	Mar 22
2005	Mar 20
2006	Mar 26
2007	Apr 9
2008	Mar 29
2009	Mar 30
2010	Mar 26
2011	Mar 28
2012	Mar 9
2013	Apr 2
2014	Apr 15
2015	Apr 4
2016	Apr 9
2017	Mar 16
2018	Apr 17
2019	Apr 15
2020	Apr 18
2021	Apr 22
2022	Apr 1
2023	Mar 20
2024	Mar 19

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1939	201
1940	206
1941	212
1942	181
1943	183
1944	232
1945	211
1946	245
1947	222
1948	203
1949	190
1950	203
1951	197
1952	177
1953	198
1954	208
1955	217
1956	197
1957	195
1958	243
1959	221
1960	192
1961	184
1962	190
1963	224
1964	183
1965	206
1966	159
1967	192
1968	201
1969	205
1970	194
1971	210
1972	191
1973	205
1974	175
1975	201
1976	166
1977	231
1978	210
1979	190
1980	194
1981	212
1982	193
1983	198
1984	213
1985	209
1986	201
1987	190
1988	214
1989	205
1990	209
1991	215
1992	218
1993	211
1994	228
1995	211
1996	206
1997	187
1998	226
1999	210
2000	181
2001	208
2002	209
2003	221
2004	235
2005	240
2006	210
2007	206
2008	212
2009	241
2010	223
2011	226
2012	239
2013	204
2014	199
2015	230
2016	217
2017	226
2018	186
2019	198
2020	196
2021	195
2022	199
2023	223
2024	251

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

See the data as a table

Year	Growing-season temperature
1938	22.0 °C
1939	21.8 °C
1940	20.7 °C
1941	22.5 °C
1942	21.2 °C
1943	21.3 °C
1944	21.7 °C
1945	20.1 °C
1946	21.0 °C
1947	21.4 °C
1948	21.7 °C
1949	21.2 °C
1950	19.9 °C
1951	20.5 °C
1952	22.2 °C
1953	22.3 °C
1954	23.2 °C
1955	23.0 °C
1956	21.6 °C
1957	21.7 °C
1958	20.8 °C
1959	22.3 °C
1960	21.6 °C
1961	19.4 °C
1962	20.9 °C
1963	21.0 °C
1964	21.8 °C
1965	21.6 °C
1966	20.2 °C
1967	19.9 °C
1968	20.9 °C
1969	21.3 °C
1970	21.7 °C
1971	21.2 °C
1972	21.2 °C
1973	20.7 °C
1974	20.1 °C
1975	20.8 °C
1976	20.4 °C
1977	22.5 °C
1978	21.3 °C
1979	21.4 °C
1980	22.8 °C
1981	21.4 °C
1982	20.7 °C
1983	21.8 °C
1984	21.5 °C
1985	21.5 °C
1986	22.7 °C
1987	22.8 °C
1988	23.0 °C
1989	21.2 °C
1990	21.9 °C
1991	23.7 °C
1992	21.0 °C
1993	21.5 °C
1994	21.9 °C
1995	22.1 °C
1996	21.0 °C
1997	20.4 °C
1998	22.5 °C
1999	22.0 °C
2000	21.6 °C
2001	22.5 °C
2002	22.7 °C
2003	21.4 °C
2004	21.8 °C
2005	22.8 °C
2006	22.5 °C
2007	22.8 °C
2008	21.2 °C
2009	21.3 °C
2010	23.8 °C
2011	23.0 °C
2012	23.8 °C
2013	22.0 °C
2014	22.3 °C
2015	23.1 °C
2016	23.5 °C
2017	23.2 °C
2018	23.0 °C
2019	22.9 °C
2020	21.9 °C
2021	22.7 °C
2022	22.9 °C
2023	23.1 °C
2024	23.6 °C

What this means for you: Since 1939, Saint Ann'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 St Louis Lambert Intl Ap (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Breckenridge Hills Woodson Terrace Overland Saint John Saint Johns Maryland Heights