Pinetop 2E, AZ: frost dates by year

Last spring and first fall frost at NOAA station USC00026601, 2001 to 2019, measured from daily minimum temperatures.

Elevation 7,200 ft, 34.124, -109.922. Download the data (JSON), NOAA daily records

Summary at 32°F

	Last spring frost	First fall frost
Median	May 21	Oct 8
Earliest	Apr 27 (2009)	Sep 21 (2006)
Latest	May 31 (2011)	Oct 25 (2003)
Trend	8.7 days later per decade	little change (less than half a day per decade)
Years with data	19	18

At 28°F (hard freeze) the median last spring date is May 9 and the median first fall date is Oct 22.

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
2019	May 28	Oct 11	May 28	Oct 11
2018	May 18	Oct 8	May 4	Oct 17
2017	May 20	Sep 24	May 1	Sep 24
2016	May 27	Sep 24	May 2	Nov 11
2015	May 24	Oct 23	May 10	Nov 2
2014	May 24	Oct 13	May 9	Nov 3
2013	May 21	Sep 28	May 9	Sep 28
2012	May 28	Oct 13	May 27	Oct 13
2011	May 31	Oct 8	May 11	Oct 8
2010	May 25	Oct 24	May 25	Nov 10
2009	Apr 27	Oct 1	Apr 27	Oct 22
2008	May 23	Oct 12	May 3	Oct 13
2007	May 9	Oct 7	May 6	Oct 22
2006	May 7	Sep 21	Apr 28	Oct 19
2005	May 13	Oct 10	May 12	Oct 26
2004	May 14	Sep 22	Apr 30	Oct 23
2003	May 11	Oct 25	May 11	Nov 4
2002	May 24	Oct 4	May 22	Oct 25
2001	May 6	no data	May 4	no data

"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.