When to plant in Westmorland, CA

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

Frost is rare in Westmorland: in 5 of the last 16 springs there was none at all. Frost dates matter less here than heat, so the planting table below is left out.

Safe to plant out

Feb 9

1 year in 10 has a later frost

Average last frost

Jan 18

about a 50% chance of a later one

Average first fall frost

Dec 5

1 year in 10 by Nov 22

Frost-free days

325

median, 1991–2020

Station used: Brawley 2 Sw · 10.9 km away · station -30 m, town -50 m. How we match towns to stations

Westmorland'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
1912	Feb 23
1913	Mar 1
1915	Jan 19
1916	Feb 3
1917	Mar 4
1918	Feb 5
1921	Feb 16
1922	Jan 27
1923	Mar 5
1924	Jan 26
1925	Jan 18
1926	Jan 29
1927	Feb 7
1928	Feb 15
1929	Feb 16
1930	Feb 4
1931	Jan 20
1932	Feb 3
1935	Jan 22
1937	Feb 14
1938	Jan 22
1940	Jan 15
1942	Jan 5
1943	Jan 21
1944	Jan 15
1945	Jan 30
1946	Feb 9
1947	Jan 31
1948	Feb 13
1949	Feb 15
1950	Feb 1
1951	Feb 2
1952	Jan 11
1953	Feb 21
1954	Jan 11
1955	Feb 22
1956	Mar 13
1959	Feb 14
1960	Feb 25
1961	Jan 8
1962	Mar 15
1963	Jan 23
1964	Mar 9
1965	Mar 3
1966	Mar 4
1967	Feb 22
1968	Jan 8
1969	Feb 1
1970	Jan 30
1971	Mar 4
1972	Feb 3
1973	Jan 30
1974	Feb 22
1975	Feb 23
1976	Jan 13
1977	Feb 26
1978	Jan 26
1979	Jan 29
1982	Jan 25
1983	Jan 4
1984	Jan 20
1985	Feb 7
1986	Feb 11
1987	Jan 22
1988	Feb 18
1989	Feb 7
1990	Feb 16
1991	Jan 31
1992	Jan 17
1993	Jan 4
1994	Feb 3
1996	Jan 24
1998	Jan 7
1999	Jan 23
2000	Jan 9
2002	Mar 3
2004	Feb 14
2006	Jan 22

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1913	277
1927	303
1929	279
1931	306
1932	311
1933	350
1935	342
1937	310
1938	305
1940	333
1941	363
1943	343
1944	317
1945	313
1946	323
1947	295
1948	294
1949	299
1950	332
1951	321
1952	348
1953	287
1954	348
1955	311
1956	251
1957	363
1958	319
1959	294
1960	286
1961	337
1962	287
1963	322
1964	254
1965	302
1966	295
1967	290
1968	330
1969	331
1970	316
1971	239
1972	311
1973	307
1974	290
1975	269
1976	319
1977	307
1978	314
1979	296
1980	320
1981	355
1982	335
1983	335
1984	328
1985	308
1986	302
1987	326
1988	311
1989	307
1990	284
1991	304
1992	317
1993	326
1994	289
1995	350
1996	328
1997	345
1998	335
1999	325
2000	307
2001	345
2002	297
2003	326
2004	288
2006	311

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

See the data as a table

Year	Growing-season temperature
1913	26.9 °C
1927	27.9 °C
1928	28.0 °C
1929	27.9 °C
1931	29.2 °C
1932	28.9 °C
1933	27.9 °C
1935	29.4 °C
1937	30.1 °C
1938	29.2 °C
1940	29.3 °C
1941	28.4 °C
1942	29.0 °C
1943	29.9 °C
1944	27.8 °C
1945	29.5 °C
1946	30.5 °C
1947	30.3 °C
1948	29.7 °C
1949	30.2 °C
1950	29.3 °C
1951	29.2 °C
1952	30.1 °C
1953	28.5 °C
1954	29.7 °C
1955	28.5 °C
1956	28.9 °C
1957	29.9 °C
1958	28.8 °C
1959	28.5 °C
1960	28.9 °C
1961	27.9 °C
1962	28.2 °C
1963	27.5 °C
1964	27.1 °C
1965	26.7 °C
1966	28.6 °C
1967	27.1 °C
1968	27.0 °C
1969	28.4 °C
1970	27.8 °C
1971	27.3 °C
1972	27.8 °C
1973	27.5 °C
1974	28.1 °C
1975	27.1 °C
1976	26.8 °C
1977	27.5 °C
1978	28.4 °C
1979	28.2 °C
1980	27.6 °C
1981	29.3 °C
1982	27.6 °C
1983	28.0 °C
1985	28.8 °C
1986	28.1 °C
1987	28.2 °C
1988	27.9 °C
1989	29.0 °C
1990	28.6 °C
1991	27.3 °C
1992	28.8 °C
1993	28.1 °C
1994	29.1 °C
1995	28.2 °C
1996	29.6 °C
1997	29.4 °C
1998	28.1 °C
1999	27.1 °C
2000	29.0 °C
2001	29.2 °C
2002	29.0 °C
2003	28.8 °C
2004	29.1 °C
2006	29.8 °C

What this means for you: Since 1912, Westmorland's last spring frost has come about 1 day earlier per decade, on average. Year-to-year swings are large, so keep using the safe date rather than the trend.

Source: daily records from Brawley 2 Sw (NOAA GHCN-Daily). Years with too many missing days are left out.

Nearby towns

Brawley Calipatria Imperial Niland El Centro Seeley