Frost history / Tucson Camp Ave Exp, AZ
Tucson Camp Ave Exp, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00028796, 1951 to 2012, measured from daily minimum temperatures.
Elevation 2,330 ft, 32.282, -110.944. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 17 | Nov 23 |
| Earliest | Jan 16 (2005) | Oct 25 (1956) |
| Latest | May 2 (1967) | Dec 19 (2008) |
| Trend | 8.0 days earlier per decade | 2.7 days later per decade |
| Years with data | 60 | 55 |
At 28°F (hard freeze) the median last spring date is Feb 21 and the median first fall date is Nov 27.
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 |
|---|---|---|---|---|
| 2012 | Mar 20 | Nov 12 | none | Dec 11 |
| 2011 | Feb 28 | Dec 5 | Feb 28 | Dec 6 |
| 2010 | Feb 22 | Nov 26 | none | Nov 26 |
| 2009 | Feb 19 | Oct 28 | Feb 11 | Dec 24 |
| 2008 | Feb 7 | Dec 19 | Jan 20 | Dec 26 |
| 2007 | Mar 3 | Dec 15 | Jan 23 | Dec 22 |
| 2006 | Mar 13 | no data | Jan 23 | no data |
| 2005 | Jan 16 | Nov 28 | none | Nov 28 |
| 2004 | Mar 1 | Nov 29 | Feb 14 | Nov 29 |
| 2003 | Feb 10 | no data | Feb 10 | no data |
| 2002 | Mar 6 | Dec 13 | Mar 6 | Dec 20 |
| 2001 | Feb 17 | Nov 27 | Jan 19 | Nov 28 |
| 2000 | Feb 26 | Nov 13 | Jan 9 | Nov 19 |
| 1999 | Feb 12 | Nov 23 | Feb 11 | Nov 23 |
| 1998 | Mar 8 | Dec 7 | Jan 8 | Dec 7 |
| 1997 | Mar 2 | Dec 10 | Feb 22 | Dec 11 |
| 1996 | Mar 2 | Dec 1 | Jan 25 | Dec 1 |
| 1995 | Mar 26 | Nov 28 | none | Dec 20 |
| 1994 | Feb 24 | Nov 20 | Feb 3 | Nov 20 |
| 1993 | Feb 3 | Nov 26 | none | Nov 27 |
| 1992 | Jan 25 | Nov 12 | Jan 15 | Nov 12 |
| 1991 | Mar 17 | Nov 23 | Jan 31 | Dec 3 |
| 1990 | Mar 17 | Nov 28 | Mar 15 | Nov 28 |
| 1989 | Mar 5 | Oct 30 | Mar 5 | Nov 28 |
| 1988 | Mar 14 | no data | Mar 14 | no data |
| 1987 | Mar 29 | Nov 16 | Jan 24 | Nov 27 |
| 1986 | Feb 11 | no data | none | no data |
| 1985 | Mar 30 | no data | Feb 2 | no data |
| 1984 | Mar 8 | Nov 20 | Feb 28 | Nov 27 |
| 1983 | Apr 5 | Nov 17 | Jan 22 | Nov 27 |
| 1982 | Mar 7 | no data | Feb 3 | no data |
| 1981 | Feb 23 | Nov 26 | Feb 5 | Dec 23 |
| 1980 | Mar 30 | Nov 24 | Feb 10 | Nov 25 |
| 1979 | Apr 11 | Nov 1 | Jan 31 | Nov 20 |
| 1978 | Feb 21 | Nov 28 | Feb 20 | Dec 3 |
| 1977 | Apr 4 | Nov 24 | Mar 12 | none |
| 1976 | Apr 17 | Nov 28 | Feb 21 | Nov 28 |
| 1975 | Apr 3 | Nov 19 | Mar 30 | Nov 20 |
| 1974 | Apr 4 | Nov 24 | Mar 10 | Nov 29 |
| 1973 | Apr 9 | Oct 31 | Feb 19 | Nov 28 |
| 1972 | Apr 15 | Nov 1 | Mar 30 | Nov 21 |
| 1971 | Mar 15 | Oct 30 | Mar 7 | Oct 30 |
| 1970 | Apr 30 | Oct 27 | Feb 19 | Oct 28 |
| 1969 | Mar 25 | Nov 18 | Mar 16 | Dec 6 |
| 1968 | Apr 23 | Nov 7 | Jan 20 | Nov 26 |
| 1967 | May 2 | Nov 30 | Mar 8 | Dec 2 |
| 1966 | Mar 5 | Nov 26 | Mar 5 | Nov 27 |
| 1965 | Apr 15 | Nov 28 | Mar 6 | Dec 20 |
| 1964 | Mar 28 | Nov 12 | Mar 11 | Nov 17 |
| 1963 | no data | Nov 23 | no data | Dec 8 |
| 1962 | Mar 25 | Nov 19 | Mar 24 | Nov 19 |
| 1961 | Mar 20 | Nov 13 | Mar 8 | Dec 28 |
| 1960 | Mar 18 | Nov 16 | Mar 17 | Nov 16 |
| 1959 | Mar 17 | Nov 23 | Mar 16 | Nov 27 |
| 1957 | Mar 25 | Nov 8 | Feb 1 | Nov 23 |
| 1956 | Apr 3 | Oct 25 | Mar 16 | Nov 2 |
| 1955 | Apr 6 | Nov 9 | Mar 22 | Nov 16 |
| 1954 | Mar 14 | Nov 18 | Mar 14 | Nov 18 |
| 1953 | Apr 13 | Nov 19 | Mar 5 | Nov 19 |
| 1952 | Mar 24 | Nov 18 | Mar 24 | Nov 19 |
| 1951 | Mar 29 | Nov 26 | Mar 19 | Nov 26 |
"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.