Frost history / Altus Afb, OK
Altus Afb, OK: frost dates by year
Last spring and first fall frost at NOAA station USW00003981, 1998 to 2024, measured from daily minimum temperatures.
Elevation 1,267 ft, 34.362, -98.976. Download the data (JSON), NOAA daily records
Summary at 32°F
| Last spring frost | First fall frost | |
|---|---|---|
| Median | Mar 22 | Nov 16 |
| Earliest | Feb 26 (2004) | Oct 9 (2000) |
| Latest | May 3 (2013) | Dec 8 (1998) |
| Trend | 3.3 days later per decade | 2.5 days earlier per decade |
| Years with data | 25 | 26 |
At 28°F (hard freeze) the median last spring date is Mar 7 and the median first fall date is Nov 25.
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 |
|---|---|---|---|---|
| 2024 | Mar 26 | no data | Feb 18 | no data |
| 2023 | Mar 19 | Oct 31 | Mar 19 | Nov 26 |
| 2022 | Mar 24 | Nov 12 | Mar 12 | Nov 15 |
| 2021 | Mar 3 | Nov 19 | Feb 20 | Nov 26 |
| 2020 | Apr 15 | Nov 30 | Feb 27 | Nov 30 |
| 2019 | Mar 31 | Oct 30 | Mar 6 | Oct 31 |
| 2018 | Apr 15 | Nov 10 | Apr 7 | Nov 10 |
| 2017 | Mar 14 | Oct 28 | Feb 25 | Dec 7 |
| 2016 | Mar 21 | Nov 19 | Mar 20 | Dec 8 |
| 2015 | Mar 7 | Nov 21 | Mar 7 | Nov 22 |
| 2014 | Apr 15 | Nov 11 | Mar 4 | Nov 12 |
| 2013 | May 3 | Nov 12 | Mar 26 | Nov 12 |
| 2012 | Mar 4 | Oct 27 | Mar 4 | Nov 13 |
| 2011 | Mar 15 | Nov 17 | Mar 6 | Nov 28 |
| 2010 | Mar 22 | Nov 25 | Mar 22 | Nov 26 |
| 2009 | Apr 7 | Nov 26 | Apr 7 | Dec 4 |
| 2008 | Mar 9 | Nov 16 | Mar 8 | Nov 21 |
| 2007 | no data | Nov 15 | no data | Nov 22 |
| 2006 | Mar 24 | Nov 16 | Mar 24 | Nov 30 |
| 2005 | Mar 17 | Oct 24 | Feb 3 | Nov 16 |
| 2004 | Feb 26 | Nov 4 | Feb 16 | Dec 1 |
| 2003 | Apr 9 | Nov 23 | Apr 9 | Nov 24 |
| 2002 | Mar 26 | Nov 25 | Mar 26 | Nov 26 |
| 2001 | Mar 26 | Nov 20 | Mar 16 | Nov 20 |
| 2000 | Mar 12 | Oct 9 | Feb 19 | Oct 9 |
| 1999 | Mar 15 | Nov 24 | Feb 12 | Dec 5 |
| 1998 | no data | Dec 8 | no data | 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 to 2020 frost probabilities.