When to plant in Plummer, ID

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

Safe to plant out

May 21

1 year in 10 has a later frost

Average last frost

May 7

about a 50% chance of a later one

Average first fall frost

Sep 28

1 year in 10 by Sep 13

Frost-free days

143

median, 1991–2020

Station used: Saint Maries · 23.4 km away · station 656 m, town 836 m. How we match towns to stations

The station sits 180 m lower than the town, so frost dates here may be off by a week or more. Check them against local experience.

This season

Plan your garden.

Build my Plummer plan

Planting dates for common crops

Crop	Start indoors	Plant out or sow	Harvest from
Tomato	Mar 26 – Apr 9	May 21 – Jun 4	Jul 15
Sweet pepper	Mar 12 – Mar 26	May 21 – Jun 4	Jul 20
Lettuce (leaf)	Mar 5 – Mar 12	Apr 9 – Apr 23	May 19
Peas	—	Apr 2 – Apr 30	May 27
Bush beans	—	May 14 – Jun 4	Jul 3
Carrot	—	Apr 16 – May 28	Jun 15
Beet	—	Apr 16 – May 28	Jun 5
Potato	—	Apr 16 – May 7	Jun 25
Kale	Feb 26 – Mar 12	Apr 9 – Apr 23	May 22
Broccoli	Feb 26 – Mar 12	Apr 9 – Apr 30	Jun 8
Cucumber	Apr 23 – Apr 30	May 21 – Jun 4	Jul 10
Summer squash and zucchini	Apr 23 – Apr 30	May 21 – Jun 4	Jul 5
Winter squash	Apr 23 – Apr 30	May 21 – Jun 4	Aug 9
Sweet corn	—	May 14 – Jun 4	Jul 13
Onion (from sets)	—	Apr 9 – Apr 30	Jul 8
Garlic	—	Sep 14 – Oct 12 (fall)	following summer
Spinach	—	Apr 2 – Apr 30	May 10
Basil	Apr 9 – Apr 23	May 21 – Jun 4	Jul 17

Plan all 65 crops for Plummer

Plummer'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
1898	May 7
1900	Apr 24
1901	Jun 8
1902	Apr 26
1903	May 2
1904	May 26
1905	May 18
1906	May 6
1907	May 16
1908	Apr 30
1909	May 14
1910	May 15
1911	May 11
1912	Apr 26
1918	Jun 3
1919	Jun 12
1920	May 31
1921	May 3
1922	May 23
1923	May 3
1924	May 6
1925	May 9
1926	Jun 2
1927	May 7
1928	May 3
1929	May 26
1930	Jun 14
1931	May 21
1932	May 15
1933	May 20
1934	May 21
1935	May 16
1936	Apr 6
1937	May 7
1938	May 7
1939	May 11
1940	May 27
1941	May 19
1942	May 17
1943	Jun 21
1944	Jun 15
1945	Apr 28
1946	May 12
1947	May 14
1948	May 15
1950	May 30
1952	May 5
1953	May 26
1954	Jun 2
1955	May 28
1956	May 12
1957	Apr 27
1958	May 1
1959	May 12
1960	Jun 20
1961	May 8
1962	May 14
1963	May 4
1965	May 18
1966	May 23
1967	May 26
1968	May 8
1969	May 4
1970	May 14
1971	May 21
1972	May 1
1973	May 27
1974	May 17
1975	May 26
1976	Jun 4
1977	May 29
1978	May 30
1980	Apr 17
1981	May 13
1982	May 11
1983	May 14
1984	Jun 1
1985	May 13
1986	May 23
1987	May 19
1989	Apr 12
1991	May 30
1992	May 21
1993	Apr 28
1994	Apr 29
1995	May 14
1996	May 10
1997	May 8
1998	May 16
1999	May 16
2000	May 11
2001	May 21
2002	May 11
2004	May 13
2005	Apr 30
2006	May 13
2007	May 7
2008	May 9
2009	May 1
2010	May 24
2011	May 2
2012	May 12
2013	May 2
2014	May 12
2015	May 3
2016	Mar 30
2017	Apr 17
2018	Apr 24
2020	May 5
2021	May 5

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1898	121
1900	153
1901	98
1902	124
1903	136
1904	107
1905	144
1906	126
1907	94
1908	131
1911	134
1912	141
1918	126
1919	100
1920	130
1921	129
1922	136
1923	136
1924	115
1925	133
1926	47
1927	152
1928	101
1929	102
1930	101
1931	123
1932	128
1933	127
1934	121
1935	91
1936	159
1937	139
1938	161
1939	118
1940	160
1941	125
1942	123
1943	89
1944	112
1945	142
1946	132
1947	122
1952	116
1953	116
1954	118
1955	116
1956	112
1957	134
1958	124
1959	141
1960	78
1961	126
1962	116
1963	167
1965	120
1966	129
1967	119
1968	146
1969	133
1970	120
1971	115
1972	147
1973	111
1974	118
1975	115
1976	95
1977	127
1978	108
1980	133
1981	132
1982	126
1983	128
1984	87
1985	131
1986	111
1987	120
1989	173
1991	114
1992	108
1993	146
1994	159
1995	129
1996	135
1997	152
1998	152
1999	133
2000	133
2001	135
2002	132
2004	165
2005	146
2006	124
2008	151
2009	152
2010	140
2012	122
2013	154
2014	122
2015	147
2016	185
2018	162

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

See the data as a table

Year	Growing-season temperature
1897	15.2 °C
1898	15.4 °C
1899	14.3 °C
1900	15.4 °C
1901	14.1 °C
1902	13.5 °C
1903	14.1 °C
1904	15.2 °C
1905	14.9 °C
1906	15.7 °C
1907	14.1 °C
1908	14.6 °C
1909	13.3 °C
1910	15.1 °C
1911	13.8 °C
1912	14.2 °C
1918	15.5 °C
1919	15.2 °C
1920	14.4 °C
1921	14.5 °C
1922	15.1 °C
1923	14.9 °C
1924	15.5 °C
1925	16.2 °C
1926	14.9 °C
1927	14.3 °C
1928	15.2 °C
1929	14.5 °C
1930	15.6 °C
1931	15.6 °C
1932	15.3 °C
1933	14.7 °C
1934	16.2 °C
1935	14.5 °C
1936	16.8 °C
1937	15.8 °C
1938	16.0 °C
1939	15.3 °C
1940	16.7 °C
1941	15.8 °C
1942	15.8 °C
1943	14.7 °C
1944	15.2 °C
1945	13.9 °C
1946	14.6 °C
1947	15.1 °C
1948	14.1 °C
1951	15.1 °C
1952	15.5 °C
1953	14.6 °C
1954	13.7 °C
1955	13.5 °C
1956	14.7 °C
1957	14.8 °C
1958	16.3 °C
1959	14.7 °C
1960	15.2 °C
1961	16.1 °C
1962	15.0 °C
1963	15.8 °C
1964	13.8 °C
1965	14.7 °C
1966	15.3 °C
1967	16.0 °C
1968	14.5 °C
1969	15.3 °C
1970	14.9 °C
1971	15.1 °C
1972	15.0 °C
1973	15.5 °C
1974	15.3 °C
1975	14.0 °C
1976	15.2 °C
1977	15.4 °C
1978	14.0 °C
1980	14.4 °C
1981	13.4 °C
1983	14.3 °C
1984	14.1 °C
1985	14.9 °C
1986	14.1 °C
1987	16.4 °C
1988	15.7 °C
1989	15.7 °C
1991	15.4 °C
1992	15.3 °C
1993	14.0 °C
1994	15.9 °C
1995	14.3 °C
1996	14.0 °C
1997	14.6 °C
1998	15.9 °C
1999	13.7 °C
2000	14.3 °C
2001	14.8 °C
2002	14.3 °C
2004	15.8 °C
2005	15.0 °C
2006	16.2 °C
2008	14.4 °C
2009	15.8 °C
2010	14.4 °C
2011	13.9 °C
2012	15.7 °C
2013	16.2 °C
2014	16.1 °C
2015	16.8 °C
2016	16.1 °C
2017	15.5 °C
2018	15.8 °C
2019	15.4 °C
2021	16.4 °C

What this means for you: Since 1898, Plummer'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 Saint Maries (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Saint Maries Coeur d'Alene Liberty Lake, WA Post Falls Otis Orchards-East Farms, WA Dalton Gardens