Del Rio, Texas, Average Temperature Rankings, April 2017 1991-2020 Degrees Fahrenheit 1 75.0 74.9 0.1 43 25 1997 2011 2016 2014 normal 2 73.2 71.3 1.9 56 12 1987 2011 2016 2012 top-third 1991 3 70.7 67.7 3.0 64 3 1968 2000 2016 2011 top-tenth 4 67.7 64.7 3.0 65 2 1968 2000 2016 2000 top-tenth 5 65.6 62.9 2.7 65 2 1968 2000 2016 2000 top-tenth 6 66.0 63.0 3.0 65 2 1977 2000 2016 2000 top-tenth 7 67.7 64.7 3.0 66 1 1977 2017 2016 2017 highest 8 69.6 67.0 2.6 66 1 1977 2000,2017 2016 2000 highest 2000 9 71.7 69.5 2.2 65 2 1977 2000 2016 2000 top-tenth 10 73.8 71.5 2.3 66 1 1977 2017 2016 2017 highest 11 75.0 73.0 2.0 66 1 1977 2017 2016 2017 highest 12 75.4 73.7 1.7 65 2 1977 1999 2016 1999 top-tenth 18 71.6 70.1 1.5 61 4 1977 2023 2016 2012 top-tenth 24 75.0 73.7 1.3 62 3 1977 2000 2016 2000 top-tenth 36 74.3 73.7 0.6 57 6 1977,1979 2013 2016 2013 top-tenth 2002,2019 48 73.8 73.6 0.2 46 15 1978,1979 2002 2016 2015 top-third 1956,2015,2021 60 74.0 73.6 0.4 52 7 1977 2020 2016 2016 top-third 2000,2001,2016,2019,2022