Frost history / Tacna 3 Ne, AZ
Tacna 3 Ne, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00028396, 1969 to 2025, measured from daily minimum temperatures.
Elevation 324 ft, 32.722, -113.919. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Feb 21 | Nov 24 |
| Earliest | Jan 4 (1993) | Oct 24 (1975) |
| Latest | Apr 9 (1973) | Dec 21 (2008) |
| Trend | 5.5 days earlier per decade | 3.2 days later per decade |
| Years with data | 56 | 55, 1 with no freeze |
At 28°F (hard freeze) the median last spring date is Feb 6 and the median first fall date is Dec 7.
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 31 | none | none | none |
| 2024 | Jan 13 | Dec 16 | Jan 12 | none |
| 2023 | Feb 16 | no data | Jan 28 | no data |
| 2022 | Mar 12 | Nov 12 | Feb 25 | Nov 19 |
| 2021 | Mar 1 | Dec 12 | none | Dec 16 |
| 2020 | Feb 6 | Nov 29 | none | Dec 5 |
| 2019 | Mar 10 | Oct 31 | Feb 20 | Oct 31 |
| 2018 | Mar 1 | Nov 15 | Feb 26 | Dec 29 |
| 2017 | Jan 29 | Dec 8 | Jan 26 | Dec 22 |
| 2016 | Feb 4 | Nov 30 | Feb 4 | Nov 30 |
| 2015 | Jan 4 | Nov 30 | Jan 4 | Dec 16 |
| 2014 | Jan 16 | Nov 17 | none | Dec 28 |
| 2013 | Feb 22 | Dec 5 | Feb 12 | none |
| 2012 | Feb 28 | Dec 11 | none | none |
| 2011 | Feb 28 | Dec 4 | Feb 12 | Dec 5 |
| 2010 | Jan 11 | Nov 23 | none | Nov 26 |
| 2009 | Feb 20 | Nov 16 | Jan 28 | Dec 5 |
| 2008 | Feb 6 | Dec 21 | Jan 20 | Dec 28 |
| 2007 | Mar 2 | Nov 25 | Mar 2 | Dec 23 |
| 2006 | Feb 24 | Nov 30 | Feb 21 | Nov 30 |
| 2005 | Mar 16 | Nov 28 | none | Nov 28 |
| 2004 | Feb 14 | Nov 30 | Jan 6 | Nov 30 |
| 2003 | Feb 10 | Nov 24 | Feb 6 | Dec 10 |
| 2002 | Mar 15 | Dec 13 | Mar 5 | Dec 19 |
| 2001 | Feb 12 | Dec 1 | Feb 9 | Dec 13 |
| 2000 | Jan 11 | Nov 13 | Jan 9 | Dec 20 |
| 1999 | Feb 3 | Nov 23 | Jan 5 | Dec 15 |
| 1998 | Jan 23 | Dec 7 | none | Dec 22 |
| 1997 | Feb 10 | Dec 5 | Jan 8 | Dec 13 |
| 1996 | Feb 27 | Dec 1 | Jan 25 | Dec 1 |
| 1995 | Mar 30 | Dec 18 | none | Dec 22 |
| 1994 | Feb 24 | Nov 15 | Feb 24 | Nov 20 |
| 1993 | Jan 4 | Nov 25 | Jan 4 | Dec 22 |
| 1992 | Jan 25 | Nov 12 | Jan 17 | Nov 25 |
| 1991 | Feb 2 | Nov 24 | Jan 31 | Dec 1 |
| 1990 | Mar 14 | Nov 28 | Feb 17 | Nov 28 |
| 1989 | Feb 7 | Nov 29 | Feb 7 | Nov 30 |
| 1988 | Mar 13 | Nov 16 | Jan 23 | Dec 24 |
| 1987 | Mar 29 | Nov 27 | Feb 27 | Dec 15 |
| 1986 | Feb 11 | Nov 9 | Feb 10 | Dec 11 |
| 1985 | Mar 4 | Nov 20 | Feb 7 | Nov 20 |
| 1984 | Mar 6 | Nov 27 | Feb 21 | none |
| 1983 | Jan 22 | Nov 22 | Jan 22 | Nov 28 |
| 1982 | Mar 7 | Nov 12 | none | none |
| 1981 | Feb 8 | Nov 20 | none | Dec 24 |
| 1980 | Feb 13 | Nov 19 | Feb 11 | none |
| 1979 | Feb 28 | Nov 20 | Feb 6 | Nov 21 |
| 1978 | Feb 18 | Nov 28 | Jan 25 | Dec 7 |
| 1977 | Mar 19 | Nov 21 | Feb 26 | none |
| 1976 | Mar 14 | Nov 28 | Jan 16 | Nov 29 |
| 1975 | Apr 2 | Oct 24 | Feb 24 | Nov 14 |
| 1974 | Mar 6 | Nov 24 | Feb 22 | Nov 28 |
| 1973 | Apr 9 | Nov 16 | Jan 25 | Dec 21 |
| 1972 | Feb 14 | no data | Feb 13 | no data |
| 1971 | Mar 7 | Oct 30 | Mar 3 | Oct 30 |
| 1970 | Apr 2 | Oct 28 | Feb 3 | Dec 11 |
| 1969 | no data | Nov 22 | no data | Dec 30 |
"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.