Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1915. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -5.0 -0.6 1.1 5.0 18.3 13.9 23.9 25.0 13.9 13.9 13.9 5.6 2 1.1 -2.2 3.3 2.2 20.6 14.4 24.4 24.4 12.2 9.4 11.7 -3.9 3 1.1 5.6 7.8 -3.3 21.1 22.2 20.6 25.0 15.0 17.8 12.2 -6.7 4 6.1 9.4 8.9 4.4 15.6 22.8 22.8 15.0 16.7 22.2 11.7 7.8 5 7.2 3.3 -1.1 12.2 11.1 23.3 18.3 19.4 17.8 10.6 15.0 8.9 6 3.3 -2.8 3.9 15.6 14.4 23.3 18.9 22.2 21.1 2.8 18.3 14.4 7 -4.4 -5.0 -1.7 16.1 10.0 21.7 21.7 21.7 22.8 6.1 19.4 12.8 8 -5.0 -2.8 -1.1 17.8 8.3 17.8 24.4 23.3 22.2 5.6 21.1 12.8 9 -4.4 5.0 -1.7 17.2 12.2 18.3 23.9 24.4 22.2 2.2 17.8 4.4 10 7.2 7.8 1.7 10.0 15.6 21.7 23.3 22.8 22.8 5.6 20.6 12.8 11 2.8 11.1 0.6 11.1 10.0 23.3 25.0 16.7 22.8 8.9 12.8 4.4 12 -6.7 15.0 6.1 8.3 10.0 24.4 23.9 18.9 21.7 20.6 8.3 -0.6 13 2.8 9.4 0.6 6.7 12.2 25.6 23.9 22.8 23.3 11.7 12.8 -2.2 14 2.2 7.2 -0.6 11.7 12.2 20.0 24.4 20.0 23.9 13.9 4.4 8.3 15 2.8 3.3 7.2 14.4 15.6 19.4 22.8 20.0 23.9 18.9 -2.8 16.7 16 5.0 0.6 -1.1 8.9 18.3 21.1 23.3 22.2 21.1 16.7 -1.7 8.9 17 -2.8 6.1 -2.2 10.0 15.6 22.2 22.8 22.8 20.6 20.0 4.4 1.1 18 -7.8 8.3 -1.1 14.4 19.4 23.9 22.8 22.2 21.1 16.7 3.3 1.1 19 -2.2 6.7 4.4 12.2 21.1 23.3 22.8 22.2 21.7 12.8 3.3 1.1 20 -2.2 12.8 -5.0 13.9 23.3 23.3 24.4 18.9 20.6 9.4 2.8 -3.9 21 1.7 5.0 -3.9 17.8 21.1 21.7 23.3 19.4 20.0 11.1 5.0 -1.1 22 1.7 12.8 -6.7 13.3 21.1 21.7 17.8 20.0 17.8 8.9 1.1 -3.3 23 -5.6 8.3 -2.2 13.9 23.3 22.2 14.4 22.2 18.3 6.7 1.7 3.3 24 -6.1 -1.1 0.6 13.9 22.8 23.3 14.4 22.2 21.1 6.1 1.7 8.9 25 -7.8 4.4 11.7 14.4 23.3 24.4 16.1 22.8 22.8 8.3 16.7 -3.3 26 1.1 9.4 9.4 16.7 23.3 19.4 17.8 22.8 22.8 11.1 2.8 0.6 27 3.3 4.4 5.6 19.4 22.8 25.0 23.3 20.0 18.3 10.0 3.3 1.7 28 1.7 5.0 8.9 18.3 17.8 19.4 23.3 22.8 17.8 8.3 6.7 -2.2 29 4.4 0.0 13.3 17.2 13.3 23.9 22.8 20.0 18.9 7.2 -5.6 -5.6 30 11.1 0.0 12.2 17.8 16.1 22.2 20.6 16.1 20.6 6.7 -3.3 8.3 31 10.0 0.0 4.4 0.0 16.1 0.0 24.4 11.7 0.0 10.0 0.0 13.3 ----------------------------------------------------------------------------------------- Max 11.1 15.0 13.3 19.4 23.3 25.6 25.0 25.0 23.9 22.2 21.1 16.7 Min -7.8 -5.0 -6.7 -3.3 8.3 13.9 14.4 11.7 12.2 2.2 -5.6 -6.7 Mean 0.5 5.2 2.7 12.4 17.0 21.6 21.8 21.0 20.2 11.0 8.0 4.0 -----------------------------------------------------------------------------------------