Quartzsite, AZ: frost dates by year

Last spring and first fall frost at NOAA station USC00026865, 1960 to 2021, measured from daily minimum temperatures.

Elevation 875 ft, 33.665, -114.227. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 8	Dec 1
Earliest	Jan 4 (1993)	Oct 30 (2019)
Latest	Mar 16 (1962)	Dec 28 (2008)
Trend	3.3 days earlier per decade	0.6 days later per decade
Years with data	46, 2 with no freeze	40

At 28°F (hard freeze) the median last spring date is Jan 22 and the median first fall date is Dec 16.

The trend is a straight-line fit through the years with a freeze. A positive spring trend means the last frost now comes later. Short or patchy records give noisy trends.

Chart

Last spring frost (32°F)

First fall frost (32°F)

Dots are single years. The gray line is the median, the green line the fitted trend.

Year by year

Year	Last spring 32°F	First fall 32°F	Last spring 28°F	First fall 28°F
2021	Mar 3	no data	none	no data
2020	Feb 5	Nov 29	none	none
2019	Feb 24	Oct 30	Jan 4	Dec 18
2018	Mar 1	Dec 5	Feb 21	Dec 29
2017	Jan 27	Dec 5	none	Dec 22
2016	Feb 5	no data	Jan 1	no data
2015	Jan 5	Nov 28	Jan 3	Nov 30
2014	Feb 2	Dec 27	none	Dec 28
2013	Feb 13	Dec 5	Jan 16	Dec 6
2012	Jan 14	no data	none	no data
2011	Feb 11	Dec 4	Feb 4	Dec 7
2010	none	Nov 26	none	Nov 27
2009	Jan 28	Dec 5	none	Dec 25
2008	Feb 6	Dec 28	Jan 18	none
2007	Feb 3	Dec 14	Jan 18	none
2006	Feb 23	Nov 30	Jan 22	Nov 30
2005	none	Nov 28	none	Dec 6
2004	Feb 13	Nov 30	Jan 5	none
2003	Feb 9	Nov 24	none	Dec 28
2002	Mar 4	Dec 21	Mar 3	Dec 26
2001	Feb 1	Dec 13	none	none
2000	Jan 8	Nov 16	Jan 8	none
1999	Feb 12	Dec 5	none	Dec 15
1998	Jan 7	Dec 7	none	Dec 23
1997	Jan 8	no data	none	no data
1996	Feb 27	Dec 3	none	Dec 19
1995	Jan 19	Dec 21	none	none
1994	Feb 3	Nov 19	none	Nov 20
1993	Jan 4	Nov 26	Jan 4	Dec 23
1992	Jan 23	Nov 25	none	Dec 16
1991	Jan 31	Dec 2	Jan 30	none
1990	Feb 16	Nov 28	Feb 15	Dec 22
1989	Feb 7	Nov 30	Feb 7	Dec 12
1988	Jan 23	Nov 20	Jan 2	Dec 27
1987	Feb 28	Dec 14	Jan 22	Dec 15
1974	Feb 11	no data	Feb 11	no data
1973	Feb 2	no data	Jan 24	no data
1968	Jan 20	Nov 29	Jan 7	Dec 13
1967	Feb 22	Dec 3	Feb 17	none
1966	Mar 4	Dec 9	Mar 4	Dec 28
1965	Mar 5	Dec 16	Mar 3	none
1964	Feb 28	Nov 17	Feb 27	Dec 14
1963	Mar 5	Dec 11	Jan 21	Dec 12
1962	Mar 16	Nov 19	Mar 2	Dec 29
1961	Feb 28	Nov 19	Jan 13	Dec 12
1960	Feb 25	Nov 28	Jan 18	Dec 7

"none" means the station recorded no freeze at that threshold in that half of the year. "no data" means more than 10% of the season's daily readings were missing. Years with no usable data are left out. See the methodology for the rules, and the ZIP lookup for 1991 to 2020 frost probabilities.