Chilling Hours for the 2024-2025 Season
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Method 1
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Method 2
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Oct |
0 | 0 |
Nov |
0 | 0 |
Dec |
0 | 0 |
Jan |
0 | 0 |
Feb |
0 | 0 |
TOTAL |
0 | 0 |
(last updated 10/02/2024)
The dormant buds of many plants require a period of cold weather to grow, flower, and develop properly, but requirements vary widely by species. For dormant buds of fruit trees, this is commonly referred to as the chilling requirement. Chilling hours are calculated as a tool for fruit producers to gauge whether their crop has been exposed to cold temperatures for a long enough time period. This table shows chilling hours as recorded at the Overton Center.
To see chilling hours for other areas in the state, please visit https://texaset.tamu.edu/, select the location nearest you, then click the Chill Units button.
Temperatures can fluctuate from one location to another, however, so the number of chilling hours at your peach orchard may be different than what we have recorded here. For chilling hour data from past years, see the table below. Several methods exist for calculating chilling hours; two are presented here.
Calculating Chilling Hours |
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Method 1: Chilling hours were calculated by counting the number of hours between 32 and 45 degrees F, from October 1st through February 28th/29th. |
Method 2: Chilling hours were calculated by counting the number of hours at or below 45 degrees F, from October 1st through February 28th/29th. |
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Historical Date of First and Last Frost and Chilling Hour Data |
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Season | Date of First Frost | Date of Last Frost | First Frost Temperature (F) | Chilling Hours Method 1 | Chilling Hours Method 2 |
2022-2023 | Oct 19, 2022 | Mar 20, 2023 | 30.16 | 814 | 1008 |
2021-2022 | Nov 19, 2021 | Mar 12, 2022 | 32.0 | 724 | 999 |
2020-2021 | Dec 1, 2020 | Feb 20, 2021 | 29.4 | 841 | 1134 |
2019-2020 | Oct 31, 2019 | Feb 27, 2020 | 31.8 | 929 | 1081 |
2018-2019 | Nov 13, 2018 | Apr 1, 2019 | 31.3 | 1,040 | 1,238 |
2017-2018 | Oct 28, 2017 | Feb 12, 2018 | 30.9 | 811 | 1,115 |
2016-2017 | Nov 20, 2016 | Mar 14, 2017 | 31.8 | 394 | 509 |
2015-2016 | Nov 22, 2015 | Mar 21, 2016 | 31.7 | 710 | 798 |
2014-2015 | Nov 13, 2014 | Mar 7, 2015 | 31.9 | 1120 | 1346 |
2013-2014 | Nov 13, 2013 | Apr 15, 2014 | 30.9 | 1018 | 1404 |
2012-2013 | Nov 13, 2012 | Mar 27, 2013 | 31.8 | 801 | 1003 |
2011-2012 | Nov 28, 2011 | Feb 25, 2012 | 30.4 | 867 | 980 |
2010-2011 | Nov 6, 2010 | Mar 6, 2011 | 31.9 | 819 | 832 |
2009-2010 | Dec 4, 2009 | Mar 21, 2010 | 25.6 | 1067 | 1440 |
2008-2009 | Oct 28, 2008 | Mar 2, 2009 | 30.9 | 789 | 992 |
2007-2008 | Nov 23, 2007 | Mar 9, 2008 | 31.6 | 974 | 1156 |
2006-2007 | Nov 3, 2006 | Mar 5, 2007 | 30.6 | 907 | 1218 |
2005-2006 | Nov 17, 2005 | Mar 24, 2006 | 27.0 | 818 | 993 |
2004-2005 | Nov 30, 2004 | Mar 17, 2005 | 31.1 | 726 | 909 |
2003-2004 | Nov 24, 2003 | Feb 16, 2004 | 31.4 | 845 | 1046 |
2002-2003 | Nov 28, 2002 | Mar 10, 2003 | 28.5 | 1060 | 1227 |
2001-2002 | Nov 21, 2001 | Mar 10, 2002 | 30.1 | 855 | 1045 |
2000-2001 | Nov 10, 2000 | Feb 10, 2001 | 30.4 | 1178 | 1491 |
1999-2000 | Nov 5, 1999 | 31.8 | 563 | 728 | |
1998-1999 | Nov 2, 1998 | 29.7 | 574 | 687 | |
1997-1998 | Nov 15, 1997 | 26.6 | – | – | |
1996-1997 | Nov 27, 1996 | 30.2 | 849 |
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