When to plant in Monument, CO

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

Safe to plant out

Jul 8

1 year in 10 has a later frost

Average last frost

May 27

about a 50% chance of a later one

Average first fall frost

Sep 20

1 year in 10 by Aug 12

Frost-free days

131

median, 1991–2020

Station used: Cheesman · 37.8 km away · station 2096 m, town 2126 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 Season likely too short	May 13 – May 27	Jul 8 – Jul 22	Sep 1
Sweet pepper Season likely too short	Apr 29 – May 13	Jul 8 – Jul 22	Sep 6
Lettuce (leaf)	Mar 25 – Apr 1	Apr 29 – May 13	Jun 8
Peas	—	Apr 21 – May 19	Jun 15
Bush beans Season likely too short	—	Jul 1 – Jul 22	Aug 20
Carrot	—	May 6 – Jun 17	Jul 5
Beet	—	May 3 – Jun 14	Jun 22
Potato	—	May 6 – May 27	Jul 15
Kale	Mar 18 – Apr 1	Apr 29 – May 13	Jun 11
Broccoli	Mar 18 – Apr 1	Apr 29 – May 20	Jun 28
Cucumber Season likely too short	Jun 10 – Jun 17	Jul 8 – Jul 22	Aug 27
Summer squash and zucchini Season likely too short	Jun 10 – Jun 17	Jul 8 – Jul 22	Aug 22
Winter squash Season likely too short	Jun 10 – Jun 17	Jul 8 – Jul 22	Sep 26
Sweet corn Season likely too short	—	Jul 1 – Jul 22	Aug 30
Onion (from sets)	—	Apr 29 – May 20	Jul 28
Garlic	—	Sep 6 – Oct 4 (fall)	following summer
Spinach	—	Apr 21 – May 19	May 29
Basil Season likely too short	May 27 – Jun 10	Jul 8 – Jul 22	Sep 3

Plan all 65 crops for Monument

Monument'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
1903	Jun 1
1904	May 17
1905	May 14
1906	May 6
1907	May 15
1908	May 29
1910	May 22
1911	May 22
1912	May 17
1913	May 15
1914	May 13
1915	Jun 7
1916	May 23
1917	Jun 6
1918	May 12
1919	Jun 5
1920	May 17
1921	May 11
1922	May 22
1923	May 16
1924	May 30
1925	May 5
1926	May 14
1927	May 30
1928	Jun 20
1929	May 30
1930	May 23
1931	May 22
1932	May 9
1933	May 25
1934	May 15
1935	May 19
1936	May 12
1937	Jun 7
1938	May 11
1939	Jun 10
1940	May 24
1941	Jun 11
1942	May 20
1943	May 25
1944	May 19
1945	Jun 17
1946	Jun 20
1947	Jun 22
1948	May 13
1949	May 7
1950	May 26
1951	Jun 3
1952	May 22
1953	May 23
1954	Jun 3
1955	Jun 5
1956	May 17
1957	Jun 17
1958	May 17
1959	May 22
1960	May 26
1961	Jun 16
1962	May 25
1963	May 23
1964	Jun 23
1965	Jun 6
1966	May 20
1967	May 27
1968	May 28
1969	May 11
1970	Jun 5
1971	Jun 5
1972	May 31
1973	Jun 20
1974	Jun 9
1975	Jun 20
1976	Jun 25
1977	May 28
1978	May 29
1980	Jun 1
1981	Jun 16
1982	May 21
1983	May 22
1984	Jun 9
1985	May 18
1986	Jun 11
1987	May 30
1988	Jun 1
1989	Jun 22
1990	Jun 3
1991	May 30
1992	Jun 16
1993	Jul 13
1994	Jul 8
1995	Jul 8
1997	Jul 9
2000	May 21
2003	May 13
2004	May 14
2005	Jun 15
2006	May 12
2007	May 25
2008	May 16
2009	Apr 28
2010	May 23
2011	May 21
2012	May 15
2013	May 11
2014	May 15
2015	May 11
2016	May 12
2017	May 20
2018	May 4
2019	May 29
2020	May 5
2021	May 13
2022	May 25
2023	Apr 30
2024	May 8
2025	Apr 30
2026	May 8

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1903	105
1904	146
1905	127
1906	150
1907	137
1908	119
1910	133
1911	134
1912	119
1913	127
1914	123
1915	116
1916	127
1917	112
1918	126
1919	109
1920	133
1921	132
1922	137
1923	124
1924	104
1925	142
1926	132
1927	117
1928	28
1930	125
1931	121
1932	146
1933	115
1934	110
1935	130
1936	136
1937	109
1938	123
1939	111
1940	129
1941	88
1942	121
1943	103
1944	115
1945	87
1946	91
1947	81
1948	145
1949	142
1950	128
1951	104
1952	124
1953	133
1954	109
1955	108
1956	106
1957	86
1958	135
1959	123
1960	120
1961	78
1962	106
1963	128
1964	58
1965	101
1966	132
1967	108
1968	110
1969	145
1970	108
1971	101
1972	120
1973	74
1974	85
1975	65
1976	89
1977	112
1978	106
1980	114
1982	133
1983	120
1984	107
1985	127
1986	107
1987	90
1988	94
1989	80
1990	106
1991	106
1992	31
1993	37
1995	6
1997	59
2003	123
2004	131
2006	128
2007	135
2008	143
2010	155
2011	139
2012	141
2013	146
2014	119
2015	168
2016	147
2017	141
2018	158
2019	130
2020	126
2021	150
2022	142
2023	159
2024	174
2025	169

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

See the data as a table

Year	Growing-season temperature
1903	14.0 °C
1904	14.0 °C
1905	14.4 °C
1906	14.0 °C
1908	14.1 °C
1910	15.1 °C
1911	15.0 °C
1912	12.9 °C
1913	14.2 °C
1914	14.5 °C
1916	14.3 °C
1917	13.0 °C
1918	13.8 °C
1919	14.9 °C
1920	13.1 °C
1921	14.1 °C
1922	14.4 °C
1923	13.6 °C
1924	13.7 °C
1925	14.9 °C
1926	14.2 °C
1927	14.1 °C
1928	13.9 °C
1930	15.0 °C
1931	15.5 °C
1932	15.0 °C
1933	14.7 °C
1934	16.1 °C
1935	14.8 °C
1936	15.9 °C
1937	15.3 °C
1938	14.6 °C
1939	15.5 °C
1940	14.7 °C
1941	12.8 °C
1942	14.1 °C
1943	14.9 °C
1944	13.9 °C
1945	13.2 °C
1946	14.9 °C
1947	14.0 °C
1948	15.0 °C
1949	14.5 °C
1950	14.1 °C
1951	14.5 °C
1952	15.2 °C
1953	14.5 °C
1954	16.1 °C
1955	14.8 °C
1956	14.4 °C
1957	13.5 °C
1958	14.5 °C
1959	14.2 °C
1960	14.6 °C
1961	13.6 °C
1962	14.3 °C
1963	15.0 °C
1964	13.9 °C
1965	12.9 °C
1966	14.7 °C
1967	13.8 °C
1968	13.3 °C
1969	14.7 °C
1970	13.7 °C
1971	13.0 °C
1972	13.8 °C
1973	12.2 °C
1974	12.9 °C
1975	11.8 °C
1976	12.6 °C
1977	14.6 °C
1978	13.2 °C
1979	12.7 °C
1980	13.6 °C
1981	15.1 °C
1982	13.8 °C
1983	13.2 °C
1984	13.8 °C
1985	13.6 °C
1986	13.3 °C
1987	13.5 °C
1988	13.7 °C
1989	13.6 °C
1990	13.1 °C
1991	13.4 °C
1992	12.7 °C
1993	11.6 °C
1994	12.3 °C
1995	9.8 °C
1996	12.9 °C
1997	11.3 °C
2000	12.5 °C
2003	15.3 °C
2004	14.1 °C
2005	14.1 °C
2006	15.3 °C
2007	15.3 °C
2008	14.3 °C
2010	15.3 °C
2011	15.2 °C
2012	16.4 °C
2013	14.9 °C
2014	14.6 °C
2015	15.3 °C
2016	15.1 °C
2017	15.0 °C
2018	16.3 °C
2019	14.7 °C
2020	15.8 °C
2021	15.6 °C
2022	15.9 °C
2023	15.0 °C
2024	16.2 °C
2025	15.6 °C
2026	17.1 °C

What this means for you: Since 1903, Monument's last spring frost has stayed at about the same time of year. Year-to-year swings are large, so keep using the safe date rather than the trend.

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

Nearby towns

Woodmoor Palmer Lake Gleneagle Air Force Academy Black Forest Woodland Park