National Weather Service United States Department of Commerce

Are you ready for freezing temperatures? With end of the growing season approaching fast across southern Colorado, the following data lists the mean first Fall freeze  dates for Alamosa, Colorado Springs, Pueblo, and other select locales across southern Colorado. (data compiled by NCEI and NWS Pueblo) 


 First 32 Degree or Lower Day in Autumn

  Alamosa Colorado Springs Pueblo
Mean Date September 11th October 1st October 8th
Earliest  August 9th, 2009 September 1st, 1911 Sept 9th, 2001, 2020
Latest  October 4th, 1997 October 31st, 1963 November 1st, 1963
Last Year (2022) September 12th October 17th October 18th


  La Junta (LHX) Lamar Eads
Mean Date October 13th October 7th October 7th
Earliest  September 21st, 1995 September 7st, 1898 September 9th, 2020
Latest  November 3rd, 1950 November 1st, 1963 November 2nd, 1950
Last Year (2022) October 18th October 13th October 17th


  Walsenburg Trinidad Walsh
Mean Date October 3rd October 6th October 11th
Earliest  September 3rd, 1934 September 8th, 2020 September 21st, 1995
Latest  November 3rd, 1950 November 8th, 2016 November 6th, 2015
Last Year (2022) October 13th October 18th October 17th