Frost history / Willow Beach, AZ
Willow Beach, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00029376, 1968 to 2003, measured from daily minimum temperatures.
Elevation 740 ft, 35.869, -114.661. Download the data (JSON) · NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Jan 20 | Dec 18 |
| Earliest | Jan 3 (1983) | Nov 19 (1985) |
| Latest | Feb 27 (1971) | Dec 28 (1988) |
| Trend | little change (less than half a day per decade) | 3.4 days later per decade |
| Years with data | 33, 12 with no freeze | 34, 16 with no freeze |
At 28°F (hard freeze) the median last spring date is Jan 14 and the median first fall date is Dec 16.
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 |
|---|---|---|---|---|
| 2003 | no data | none | no data | none |
| 2002 | Feb 2 | none | none | none |
| 2001 | none | none | none | none |
| 2000 | no data | none | no data | none |
| 1999 | none | none | none | none |
| 1998 | none | Dec 22 | none | Dec 24 |
| 1997 | none | Dec 27 | none | none |
| 1996 | none | Dec 19 | none | none |
| 1995 | none | none | none | none |
| 1994 | none | none | none | none |
| 1993 | Jan 5 | none | none | none |
| 1992 | none | Dec 20 | none | none |
| 1991 | Jan 3 | none | Jan 2 | none |
| 1990 | none | Dec 22 | none | Dec 22 |
| 1989 | Feb 8 | none | Feb 7 | none |
| 1988 | Jan 20 | Dec 28 | none | none |
| 1987 | none | Dec 17 | none | none |
| 1986 | no data | none | no data | none |
| 1985 | Feb 7 | Nov 19 | Feb 5 | none |
| 1984 | Jan 22 | Dec 16 | Jan 19 | none |
| 1983 | Jan 3 | Dec 6 | none | none |
| 1982 | Feb 7 | none | Feb 6 | none |
| 1981 | none | none | none | none |
| 1980 | Jan 6 | no data | none | no data |
| 1979 | Feb 6 | Dec 12 | Jan 31 | none |
| 1978 | none | Dec 4 | none | Dec 7 |
| 1977 | Jan 12 | none | none | none |
| 1976 | Jan 9 | no data | Jan 3 | no data |
| 1975 | Jan 13 | Nov 30 | none | none |
| 1974 | Jan 5 | Dec 24 | Jan 4 | none |
| 1973 | Jan 24 | Dec 25 | Jan 9 | none |
| 1972 | Feb 5 | Dec 6 | Feb 3 | Dec 10 |
| 1971 | Feb 27 | Dec 9 | Jan 7 | Dec 9 |
| 1970 | Jan 8 | none | Jan 7 | none |
| 1969 | Jan 30 | none | none | none |
| 1968 | Jan 9 | Dec 21 | none | Dec 21 |
"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 1991–2020 frost probabilities.