Picacho 8 Se, AZ: frost dates by year

Last spring and first fall frost at NOAA station USC00026513, 1988 to 2025, measured from daily minimum temperatures.

Elevation 1,981 ft, 32.646, -111.402. Download the data (JSON) · NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	Feb 7	Dec 7
Earliest	Jan 3 (2021)	Nov 12 (1992)
Latest	Mar 26 (1995)	Dec 29 (2018)
Trend	4.9 days earlier per decade	6.3 days later per decade
Years with data	25, 1 with no freeze	29, 2 with no freeze

At 28°F (hard freeze) the median last spring date is Jan 24 and the median first fall date is Dec 18.

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
2025	Jan 25	none	Jan 22	none
2024	Jan 13	Dec 11	none	none
2023	Mar 2	none	Jan 25	none
2022	Feb 25	Dec 14	Feb 3	Dec 17
2021	Jan 3	Dec 18	none	none
2020	no data	Dec 15	no data	none
2019	no data	Dec 1	no data	none
2018	no data	Dec 29	no data	none
2017	Jan 27	Dec 22	none	Dec 22
2014	no data	Dec 27	no data	Dec 27
2012	no data	Dec 28	no data	none
2011	Feb 11	Dec 4	Feb 7	Dec 7
2010	none	Nov 26	none	Nov 30
2008	no data	Dec 23	no data	Dec 27
2007	Mar 2	no data	Jan 22	no data
2006	Jan 23	no data	Jan 23	no data
2004	Feb 13	Nov 30	Feb 13	Dec 2
2003	Feb 7	Nov 23	Jan 1	Dec 28
2002	Feb 6	Dec 19	Feb 6	Dec 22
2001	Feb 8	Nov 27	Jan 18	none
2000	Feb 21	no data	Jan 7	no data
1999	Jan 30	Nov 23	none	Dec 15
1998	Jan 8	Dec 7	none	Dec 8
1997	Feb 7	Dec 11	none	Dec 26
1996	Jan 25	Dec 4	none	Dec 19
1995	Mar 26	Dec 23	none	none
1994	no data	Nov 20	no data	Nov 20
1993	Jan 4	Nov 26	none	Dec 17
1992	Jan 15	Nov 12	none	none
1990	Mar 15	Nov 28	Feb 16	Dec 23
1989	Mar 4	Dec 12	Feb 7	Dec 12
1988	Mar 13	Nov 19	Jan 22	Dec 27

"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 1991–2020 frost probabilities.