 In the northern plains, the Februaries of 1925, 1926, 1927, 1930, 1931, and 1935 are among the 25 warmest Februaries between 1895 and 2017, although 1929 had the third-coldest February of all-time.Despite a mild March over most areas east of the Rocky Mountains, the six months from October 1935 to March 1936 were the fifth-coldest on record over the contiguous U.S.The 1935/36 cold wave began in the plains states in November, when temperatures were well below normal in many areas west of the Mississippi River.