Frost history / Painted Desert Np, AZ
Painted Desert Np, AZ: frost dates by year
Last spring and first fall frost at NOAA station USC00026190, 1974 to 2025, measured from daily minimum temperatures.
Elevation 5,760 ft, 35.068, -109.769. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | May 4 | Oct 21 |
| Earliest | Apr 12 (2004) | Oct 5 (2013) |
| Latest | Jun 20 (1975) | Nov 1 (2018) |
| Trend | 3.2 days earlier per decade | little change (less than half a day per decade) |
| Years with data | 24 | 24 |
At 28°F (hard freeze) the median last spring date is Apr 18 and the median first fall date is Oct 27.
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 |
|---|---|---|---|---|
| 2025 | Apr 30 | Oct 31 | Apr 20 | Nov 25 |
| 2024 | May 6 | Oct 30 | Apr 7 | Oct 30 |
| 2023 | Apr 26 | Oct 13 | Apr 21 | Oct 30 |
| 2022 | Apr 25 | Oct 24 | Apr 14 | Oct 26 |
| 2021 | Apr 19 | Oct 13 | Apr 1 | Oct 13 |
| 2020 | Apr 20 | Oct 26 | Apr 15 | Oct 26 |
| 2019 | May 24 | Oct 11 | Apr 14 | Oct 11 |
| 2018 | May 3 | Nov 1 | Apr 23 | Nov 1 |
| 2017 | May 19 | Oct 17 | Apr 30 | Oct 17 |
| 2015 | May 16 | Oct 31 | Apr 16 | Nov 6 |
| 2014 | May 13 | Oct 29 | Apr 15 | Nov 3 |
| 2013 | May 4 | Oct 5 | Apr 19 | Oct 6 |
| 2012 | May 27 | Oct 13 | Apr 16 | Oct 27 |
| 2011 | May 3 | Oct 8 | May 3 | Oct 8 |
| 2010 | no data | Oct 26 | no data | Nov 10 |
| 2008 | May 4 | Oct 12 | May 4 | Oct 12 |
| 2007 | May 6 | Oct 7 | Apr 17 | Oct 22 |
| 2006 | Apr 24 | Oct 19 | Apr 6 | Oct 27 |
| 2005 | Apr 21 | Nov 1 | Mar 31 | Nov 17 |
| 2004 | Apr 12 | no data | Mar 1 | no data |
| 2003 | May 10 | Oct 27 | Apr 25 | Nov 4 |
| 1978 | May 7 | no data | May 6 | no data |
| 1977 | May 19 | Nov 1 | May 19 | Nov 7 |
| 1976 | Apr 27 | Oct 19 | Apr 18 | Oct 20 |
| 1975 | Jun 20 | Oct 14 | May 6 | Oct 16 |
| 1974 | no data | Oct 29 | no data | Nov 4 |
"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.