Frost history / Ganado, AZ
Ganado, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00023303, 1951 to 2015, measured from daily minimum temperatures.
Elevation 6,340 ft, 35.709, -109.554. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 22 | Oct 6 |
| Earliest | Apr 23 (1992) | Sep 4 (1961) |
| Latest | Jul 3 (1995) | Oct 30 (2015) |
| Trend | 2.5 days earlier per decade | 2.2 days later per decade |
| Years with data | 38 | 36 |
At 28°F (hard freeze) the median last spring date is May 10 and the median first fall date is Oct 17.
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 |
|---|---|---|---|---|
| 2015 | no data | Oct 30 | no data | Nov 2 |
| 2014 | May 13 | no data | May 13 | no data |
| 2013 | May 7 | Sep 27 | May 2 | Oct 4 |
| 2012 | May 27 | Oct 25 | Apr 16 | Oct 25 |
| 2011 | May 12 | Oct 6 | May 10 | Oct 7 |
| 2010 | no data | Oct 24 | no data | Oct 26 |
| 1995 | Jul 3 | no data | Apr 25 | no data |
| 1994 | May 20 | Oct 6 | Apr 26 | Oct 6 |
| 1993 | no data | Oct 18 | no data | Oct 27 |
| 1992 | Apr 23 | no data | Apr 20 | no data |
| 1991 | May 15 | Oct 5 | May 5 | Oct 29 |
| 1984 | May 8 | no data | May 8 | no data |
| 1983 | May 21 | Sep 21 | May 18 | Nov 9 |
| 1982 | May 11 | no data | May 6 | no data |
| 1981 | no data | Oct 16 | no data | Oct 16 |
| 1979 | Jun 19 | no data | May 12 | no data |
| 1977 | May 21 | no data | May 19 | no data |
| 1976 | May 2 | Oct 8 | May 1 | Oct 19 |
| 1975 | May 23 | Oct 8 | May 23 | Oct 13 |
| 1974 | May 21 | Sep 16 | May 20 | Nov 2 |
| 1973 | May 9 | Sep 26 | May 2 | Oct 11 |
| 1972 | May 23 | Oct 22 | May 1 | Oct 30 |
| 1971 | Jun 4 | Oct 2 | May 19 | Oct 19 |
| 1970 | May 15 | Sep 23 | May 3 | Sep 26 |
| 1969 | no data | Oct 5 | no data | Oct 5 |
| 1968 | May 25 | Sep 17 | May 18 | Oct 17 |
| 1967 | May 16 | Sep 14 | May 15 | Oct 16 |
| 1966 | May 1 | Oct 13 | Apr 20 | Oct 14 |
| 1965 | May 28 | Sep 21 | May 10 | Oct 1 |
| 1964 | May 29 | Oct 19 | May 9 | Oct 24 |
| 1963 | Jun 9 | Oct 24 | May 12 | Oct 24 |
| 1962 | May 22 | Oct 13 | May 18 | Nov 7 |
| 1961 | Jun 3 | Sep 4 | May 29 | Oct 2 |
| 1960 | May 25 | Oct 13 | May 25 | Oct 13 |
| 1959 | May 29 | Sep 25 | May 5 | Oct 8 |
| 1958 | Jun 13 | Oct 21 | Apr 28 | Oct 21 |
| 1957 | Jun 17 | Sep 22 | Apr 28 | Oct 23 |
| 1956 | May 16 | Oct 8 | May 15 | Oct 20 |
| 1955 | Jun 3 | Oct 6 | May 26 | Oct 6 |
| 1954 | Jun 7 | Oct 15 | Apr 7 | Oct 15 |
| 1953 | May 18 | Oct 13 | May 13 | Oct 24 |
| 1952 | May 23 | Sep 13 | Apr 16 | Oct 7 |
| 1951 | Jun 3 | Oct 5 | Jun 2 | Oct 6 |
"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.