Frost history / Greer, AZ
Greer, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00023683, 1963 to 2009, measured from daily minimum temperatures.
Elevation 8,275 ft, 34.022, -109.452. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 8 | Sep 27 |
| Earliest | May 3 (1997) | Sep 12 (1985) |
| Latest | Jun 27 (1983) | Oct 25 (1991) |
| Trend | 1.2 days earlier per decade | 0.6 days later per decade |
| Years with data | 35 | 40 |
At 28°F (hard freeze) the median last spring date is May 31 and the median first fall date is Oct 8.
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 |
|---|---|---|---|---|
| 2009 | Jun 17 | Sep 22 | Apr 30 | Sep 22 |
| 2008 | no data | Sep 30 | no data | Oct 7 |
| 2007 | Jun 8 | Sep 18 | Jun 8 | Oct 7 |
| 2004 | Jun 19 | Sep 22 | Jun 12 | Sep 22 |
| 2003 | Jun 26 | no data | May 12 | no data |
| 2002 | no data | Sep 19 | no data | Oct 3 |
| 1999 | Jun 6 | Oct 6 | Jun 5 | Oct 17 |
| 1998 | Jun 9 | Oct 2 | May 25 | Oct 5 |
| 1997 | May 3 | Oct 8 | May 2 | Oct 8 |
| 1996 | May 28 | Sep 27 | May 28 | Oct 21 |
| 1995 | Jun 18 | Sep 30 | Jun 9 | Oct 5 |
| 1994 | May 21 | Oct 2 | May 10 | Oct 6 |
| 1993 | Jun 8 | Sep 19 | Jun 7 | Oct 18 |
| 1992 | May 24 | Oct 7 | Apr 23 | Oct 7 |
| 1991 | Jun 3 | Oct 25 | Jun 1 | Oct 25 |
| 1990 | Jun 2 | Oct 4 | May 20 | Oct 9 |
| 1989 | May 27 | Sep 21 | May 15 | Oct 18 |
| 1988 | no data | Sep 23 | no data | Sep 23 |
| 1987 | May 29 | Sep 14 | May 29 | Oct 14 |
| 1986 | May 18 | Sep 24 | May 18 | Sep 30 |
| 1985 | Jun 5 | Sep 12 | Jun 4 | Oct 11 |
| 1984 | Jun 7 | Oct 4 | May 3 | Oct 13 |
| 1983 | Jun 27 | Oct 3 | May 21 | Oct 11 |
| 1982 | Jun 7 | Sep 29 | Jun 3 | Oct 2 |
| 1981 | Jun 15 | Oct 3 | Jun 15 | Oct 13 |
| 1980 | Jun 3 | Oct 15 | Jun 2 | Oct 15 |
| 1979 | Jun 20 | Oct 12 | Jun 19 | Oct 22 |
| 1978 | no data | Sep 20 | no data | Oct 26 |
| 1977 | May 28 | Sep 25 | May 27 | Oct 13 |
| 1976 | Jun 27 | Sep 28 | Jun 12 | Oct 4 |
| 1975 | Jun 11 | Sep 22 | May 29 | Oct 8 |
| 1974 | no data | Sep 28 | no data | Sep 28 |
| 1972 | no data | Sep 20 | no data | Oct 20 |
| 1971 | Jun 8 | Sep 19 | Jun 4 | Sep 19 |
| 1970 | Jun 12 | Sep 15 | Jun 1 | Sep 23 |
| 1969 | Jun 11 | no data | May 8 | no data |
| 1968 | Jun 10 | Sep 17 | Jun 10 | Sep 17 |
| 1967 | Jun 15 | Sep 29 | Jun 10 | Oct 5 |
| 1966 | May 30 | Oct 4 | May 12 | Oct 14 |
| 1965 | Jun 26 | Sep 20 | Jun 10 | Sep 20 |
| 1964 | May 31 | Sep 20 | May 31 | Oct 23 |
| 1963 | no data | Oct 5 | no data | Oct 20 |
"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.