Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1975. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 4.4 7.8 11.1 7.2 15.0 15.0 21.1 20.0 22.8 14.4 15.6 -2.2 2 2.8 6.7 7.8 4.4 18.9 17.2 21.7 21.1 21.7 9.4 15.6 0.0 3 1.1 7.2 4.4 0.6 20.6 17.8 22.2 20.6 22.2 8.3 10.0 5.0 4 -1.7 7.8 2.2 3.9 17.8 20.6 21.1 21.1 19.4 10.0 11.7 11.1 5 -0.6 2.8 0.0 11.1 17.2 22.2 21.1 20.6 20.6 11.7 10.6 16.7 6 -0.6 -3.3 11.1 13.9 21.1 23.3 21.1 21.1 21.7 13.3 12.8 5.6 7 10.6 -6.1 8.3 13.9 20.0 22.2 22.2 21.1 20.6 12.2 14.4 3.3 8 5.6 0.0 3.9 14.4 17.8 23.3 21.7 21.1 19.4 13.3 18.9 3.3 9 5.0 -2.2 9.4 14.4 15.0 21.1 22.2 21.1 21.7 18.3 18.9 4.4 10 5.0 -2.8 6.1 12.2 18.9 18.9 21.7 20.0 21.1 20.0 9.4 4.4 11 -0.6 8.9 6.7 10.6 16.1 18.3 21.7 21.7 21.7 20.0 9.4 8.3 12 -6.7 4.4 4.4 7.8 13.9 17.8 21.7 22.2 21.1 19.4 8.9 12.8 13 -9.4 3.3 2.2 10.0 16.1 21.1 20.0 22.8 17.2 20.6 0.6 14.4 14 -2.2 2.8 -1.1 10.6 15.6 22.2 20.0 23.3 18.3 20.0 3.3 17.8 15 -0.6 7.8 5.6 7.2 14.4 22.2 20.0 22.2 16.7 18.3 4.4 1.7 16 6.1 3.3 7.8 11.7 14.4 23.9 20.0 22.8 16.7 13.9 11.7 2.2 17 7.8 3.3 8.3 17.8 13.9 23.9 21.1 22.8 18.3 10.0 3.3 1.1 18 10.6 2.8 9.4 18.9 17.2 24.4 21.7 22.8 20.6 10.0 13.9 -6.1 19 1.7 -1.1 7.8 10.0 17.8 23.9 22.8 23.3 22.2 9.4 18.9 -3.9 20 -2.2 1.1 7.8 12.2 17.8 23.9 22.2 22.8 16.1 7.8 5.0 -0.6 21 -1.7 8.9 14.4 14.4 22.2 22.8 21.1 22.8 17.8 13.3 -1.1 0.0 22 3.9 1.7 16.1 15.6 21.1 21.7 22.2 22.2 10.6 15.0 2.8 -0.6 23 5.0 0.0 16.7 19.4 16.7 22.2 22.2 21.1 10.0 15.0 -2.2 0.0 24 7.2 -1.7 8.9 18.9 15.6 21.1 22.2 22.8 10.0 20.6 -3.3 4.4 25 3.9 3.9 8.9 19.4 15.0 22.2 23.3 23.3 8.9 8.9 -1.7 1.7 26 6.1 7.8 10.6 21.1 21.7 20.0 22.2 21.7 10.6 8.9 -2.2 -0.6 27 10.0 6.7 20.0 21.1 19.4 20.0 22.2 21.7 12.2 12.2 15.0 2.2 28 16.1 9.4 5.0 16.7 15.6 19.4 22.8 20.6 14.4 17.8 8.9 7.2 29 12.8 0.0 1.7 16.7 15.6 20.0 23.9 21.1 11.7 12.8 20.0 3.9 30 12.8 0.0 0.0 16.1 13.3 21.1 23.9 22.2 14.4 11.1 10.0 -1.1 31 8.9 0.0 6.1 0.0 15.0 0.0 19.4 22.8 0.0 15.6 0.0 -1.1 ----------------------------------------------------------------------------------------- Max 16.1 9.4 20.0 21.1 22.2 24.4 23.9 23.3 22.8 20.6 20.0 17.8 Min -9.4 -6.1 -1.1 0.6 13.3 15.0 19.4 20.0 8.9 7.8 -3.3 -6.1 Mean 3.9 3.3 7.5 13.1 17.1 21.1 21.7 21.8 17.4 13.9 8.8 3.7 -----------------------------------------------------------------------------------------