When to plant in Tolleson, AZ

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

Frost is rare in Tolleson: in 7 of the last 19 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 4

1 year in 10 has a later frost

Average last frost

Jan 14

about a 50% chance of a later one

Average first fall frost

Dec 15

1 year in 10 by Nov 27

Frost-free days

338

median, 1991–2020

Station used: Litchfield Park · 11.1 km away · station 317 m, town 309 m. How we match towns to stations

Tolleson'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
1918	Feb 20
1919	Mar 5
1920	Mar 28
1921	Apr 8
1922	Apr 17
1923	Mar 23
1924	Mar 17
1926	Jan 30
1927	Mar 17
1928	Apr 5
1929	Mar 25
1930	Feb 25
1931	Mar 7
1932	Mar 5
1933	Feb 21
1935	Mar 11
1936	Feb 8
1937	Feb 26
1938	Apr 1
1939	Mar 3
1940	Feb 20
1941	Jan 18
1942	Mar 8
1943	Jan 19
1944	Mar 21
1945	Feb 27
1946	Feb 17
1947	Feb 3
1948	Mar 7
1949	Feb 16
1950	Feb 1
1952	Mar 14
1953	Feb 25
1955	Mar 22
1956	Mar 14
1957	Feb 1
1958	Jan 25
1959	Mar 6
1960	Feb 26
1961	Feb 28
1962	Mar 15
1963	Mar 16
1964	Mar 9
1965	Mar 6
1966	Mar 7
1967	Feb 19
1968	Jan 7
1969	Mar 8
1970	Feb 3
1971	Mar 7
1972	Feb 14
1973	Feb 2
1974	Feb 22
1975	Feb 24
1976	Mar 4
1977	Apr 3
1978	Jan 26
1979	Feb 6
1980	Jan 5
1981	Feb 5
1982	Feb 4
1983	Jan 22
1984	Feb 18
1985	Mar 4
1987	Feb 27
1988	Mar 12
1989	Feb 7
1992	Jan 18
1994	Feb 24
1995	Jan 19
1996	Jan 25
2006	Jan 22
2007	Jan 17
2008	Jan 18
2011	Feb 4
2013	Jan 16
2015	Jan 4
2019	Jan 3
2020	Feb 4

Each year's frost-free daysLong-term trend

See the data as a table

Year	Frost-free days
1919	248
1920	240
1921	224
1922	200
1923	260
1926	291
1927	263
1928	226
1929	233
1930	265
1931	257
1933	287
1936	296
1938	224
1939	294
1940	277
1941	304
1942	273
1943	312
1944	249
1945	254
1946	261
1947	276
1948	246
1949	297
1950	282
1952	248
1953	266
1955	238
1956	232
1957	289
1958	295
1959	283
1960	274
1961	259
1962	285
1963	269
1964	251
1965	287
1966	277
1967	293
1968	324
1969	274
1970	302
1971	236
1972	288
1973	297
1974	290
1975	268
1976	268
1977	257
1978	310
1979	286
1980	325
1981	293
1983	308
1984	281
1985	254
1989	326
1992	310
1994	268
1995	335
1996	309
2005	338
2006	312
2007	342
2008	342
2009	358
2010	331
2011	304
2012	363
2013	326
2014	361
2015	345
2016	363
2018	363
2019	361
2020	329

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

See the data as a table

Year	Growing-season temperature
1919	27.9 °C
1920	26.5 °C
1921	26.5 °C
1922	27.1 °C
1923	26.8 °C
1926	27.3 °C
1928	27.1 °C
1929	27.3 °C
1930	26.4 °C
1932	27.4 °C
1933	27.6 °C
1936	29.2 °C
1938	28.6 °C
1939	28.2 °C
1940	29.1 °C
1941	25.8 °C
1942	27.4 °C
1943	28.1 °C
1944	26.8 °C
1945	27.5 °C
1946	28.3 °C
1947	28.3 °C
1948	28.0 °C
1949	28.0 °C
1950	27.3 °C
1952	27.6 °C
1953	26.9 °C
1954	28.3 °C
1955	26.6 °C
1956	27.9 °C
1957	28.0 °C
1958	29.0 °C
1959	28.5 °C
1960	28.6 °C
1961	28.3 °C
1962	28.1 °C
1963	27.7 °C
1964	27.2 °C
1965	26.7 °C
1966	28.3 °C
1967	27.6 °C
1968	27.5 °C
1969	28.8 °C
1970	28.3 °C
1971	27.2 °C
1972	28.4 °C
1973	28.4 °C
1974	28.3 °C
1975	27.1 °C
1976	27.4 °C
1977	28.4 °C
1978	28.0 °C
1979	28.2 °C
1980	28.3 °C
1981	29.9 °C
1982	28.3 °C
1983	28.3 °C
1984	28.7 °C
1985	28.7 °C
1987	28.5 °C
1988	28.3 °C
1992	28.6 °C
1994	29.4 °C
1995	28.6 °C
1996	29.9 °C
1997	29.9 °C
2005	29.2 °C
2006	29.6 °C
2007	29.8 °C
2009	30.0 °C
2010	29.2 °C
2011	29.9 °C
2012	30.2 °C
2013	30.2 °C
2014	29.8 °C
2015	30.2 °C
2016	30.2 °C
2017	30.2 °C
2018	30.4 °C
2019	30.2 °C
2020	31.6 °C

What this means for you: Since 1918, Tolleson's last spring frost has come about 5 days earlier per decade, on average. The frost-free season has grown by about 10 days per decade. Year-to-year swings are large, so keep using the safe date rather than the trend.

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

Nearby towns

Avondale Goodyear Litchfield Park Glendale Peoria Sun City