Frost history / Mund'S Park, AZ
Mund'S Park, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00025780, 1986 to 2012, measured from daily minimum temperatures.
Elevation 6,470 ft, 34.936, -111.639. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jun 13 | Sep 18 |
| Earliest | Jun 1 (1994) | Aug 8 (2009) |
| Latest | Jul 24 (1995) | Oct 9 (2000) |
| Trend | 4.5 days earlier per decade | 1.6 days later per decade |
| Years with data | 25 | 25 |
At 28°F (hard freeze) the median last spring date is May 30 and the median first fall date is Oct 3.
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 | Jun 6 | no data | May 29 | no data |
| 2011 | Jun 13 | Oct 7 | Jun 9 | Oct 7 |
| 2010 | Jun 22 | Sep 10 | May 26 | Oct 8 |
| 2009 | no data | Aug 8 | no data | Oct 1 |
| 2008 | Jun 12 | Oct 6 | May 30 | Oct 6 |
| 2007 | Jun 9 | Sep 18 | Jun 8 | Sep 18 |
| 2006 | Jun 12 | Sep 19 | May 30 | Sep 21 |
| 2005 | Jun 29 | Sep 13 | May 12 | Sep 17 |
| 2004 | Jul 4 | Sep 21 | Jun 10 | Oct 15 |
| 2003 | Jun 11 | Oct 5 | May 12 | Oct 25 |
| 2002 | Jun 16 | Aug 25 | May 26 | Oct 3 |
| 2001 | Jun 17 | no data | May 7 | no data |
| 2000 | Jun 11 | Oct 9 | May 17 | Oct 12 |
| 1999 | Jun 11 | Oct 2 | Jun 7 | Oct 15 |
| 1998 | Jun 25 | Sep 27 | Jun 8 | Oct 1 |
| 1997 | Jul 2 | Oct 8 | May 3 | Oct 8 |
| 1996 | Jun 1 | Sep 20 | May 27 | Oct 18 |
| 1995 | Jul 24 | Sep 19 | Jun 22 | Oct 1 |
| 1994 | Jun 1 | Sep 15 | Jun 1 | Oct 1 |
| 1993 | Jun 10 | Sep 14 | Jun 8 | Sep 26 |
| 1992 | Jun 19 | Sep 5 | Apr 24 | Oct 4 |
| 1991 | Jun 30 | Sep 13 | Jun 23 | Oct 5 |
| 1990 | Jun 17 | Sep 28 | Jun 17 | Oct 9 |
| 1989 | Jun 10 | Sep 9 | Jun 3 | Sep 20 |
| 1988 | Jun 13 | Sep 13 | Jun 1 | Sep 24 |
| 1987 | Jul 23 | Sep 12 | May 29 | Sep 14 |
| 1986 | no data | Sep 11 | no data | Sep 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 to 2020 frost probabilities.