Warmest Temperature/Ranking Record/Year Period of Record Sisseton, SD 48.0 / WARMEST 47.1 / 2016 1931-2021 Bismarck, ND 47.2 / WARMEST 46.5 / 2016 1886-2021 Aberdeen, SD 47.7 / 2nd Warmest 48.1 / 1987 1893-2021 Valentine, NE 51.9 / 2nd Warmest 52.0 / 2012 1889-2021 Alamosa, CO 44.2 / 3rd Warmest (tied with 1954) 44.7 /…