Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1918. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -6.7 -7.8 3.3 15.0 11.1 22.8 23.3 20.0 21.7 10.0 3.9 -3.9 2 1.1 -9.4 5.0 13.3 10.0 22.8 22.2 20.6 23.9 7.8 8.9 -0.6 3 -3.9 -5.6 11.1 20.6 13.3 18.3 20.0 20.0 25.6 13.3 12.2 -2.8 4 2.2 -8.3 8.3 12.8 14.4 20.6 20.0 21.7 25.6 15.0 16.1 -1.1 5 8.3 -2.2 13.9 17.2 16.1 19.4 21.1 20.0 18.9 17.2 15.6 1.7 6 -1.7 12.2 15.0 12.8 18.9 22.2 18.3 20.6 18.9 19.4 20.6 2.2 7 -8.9 6.7 3.9 6.1 21.7 22.2 16.7 22.8 11.7 22.2 21.1 11.1 8 3.3 12.8 5.6 11.1 20.6 20.6 19.4 25.0 8.3 16.7 17.2 17.8 9 -3.3 3.9 19.4 8.9 20.0 19.4 20.0 23.9 12.8 17.8 9.4 17.8 10 2.8 3.9 7.2 2.2 21.7 22.2 21.1 23.3 12.2 16.1 4.4 12.8 11 -14.4 5.6 5.6 0.0 21.7 19.4 25.0 23.9 13.9 17.8 4.4 7.2 12 -17.2 6.7 18.3 3.9 15.0 20.0 21.7 24.4 18.3 14.4 10.6 12.2 13 -10.0 0.0 19.4 15.6 6.7 20.0 23.3 23.9 21.1 13.9 5.0 11.1 14 0.0 17.2 15.0 14.4 7.8 18.3 23.9 21.7 21.7 15.6 7.8 1.7 15 -6.1 10.0 7.8 14.4 8.3 21.7 23.3 21.1 21.1 8.3 16.7 0.0 16 -5.6 5.0 7.2 17.2 19.4 18.9 22.2 23.3 16.1 16.1 11.1 0.6 17 -4.4 1.7 -0.6 16.7 21.1 18.3 20.6 23.3 16.7 17.8 10.0 7.8 18 -7.8 2.8 8.3 11.7 20.6 22.2 21.1 26.1 18.9 17.2 2.8 11.1 19 2.2 8.3 2.8 10.0 21.7 21.1 21.7 24.4 18.9 12.8 1.1 11.1 20 -5.6 -2.8 8.9 5.6 22.8 24.4 18.9 24.4 14.4 16.1 11.1 7.2 21 -5.0 -1.7 15.6 3.3 20.6 23.3 22.2 25.0 6.7 18.9 5.0 2.2 22 -11.1 0.0 17.8 8.9 21.7 22.8 21.7 25.6 5.6 17.2 1.7 5.6 23 -3.9 8.3 10.0 15.0 18.9 23.9 20.6 25.0 6.7 14.4 2.2 3.3 24 -5.6 12.8 5.6 17.8 17.8 24.4 22.2 23.3 11.1 12.8 -3.3 -3.9 25 0.0 15.6 3.3 11.7 22.2 24.4 22.8 22.2 21.1 12.8 3.3 -4.4 26 12.8 7.2 3.3 10.0 20.6 25.0 21.1 18.3 18.9 10.0 2.8 -7.2 27 -3.9 12.8 11.1 19.4 20.0 25.6 24.4 21.1 17.2 5.0 0.6 -3.9 28 -5.0 7.2 17.2 13.3 22.8 23.9 22.2 22.8 8.9 3.3 -1.1 -6.1 29 -4.4 0.0 11.1 12.2 22.2 24.4 23.3 23.9 5.0 10.0 0.0 -0.6 30 -7.8 0.0 13.9 7.2 22.8 24.4 21.7 23.9 8.3 5.6 1.1 8.9 31 -7.8 0.0 5.6 0.0 21.7 0.0 23.3 25.0 0.0 6.7 0.0 4.4 ----------------------------------------------------------------------------------------- Max 12.8 17.2 19.4 20.6 22.8 25.6 25.0 26.1 25.6 22.2 21.1 17.8 Min -17.2 -9.4 -0.6 0.0 6.7 18.3 16.7 18.3 5.0 3.3 -3.3 -7.2 Mean -3.8 4.4 9.7 11.6 18.2 21.9 21.6 22.9 15.7 13.6 7.4 4.0 -----------------------------------------------------------------------------------------