Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1972. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 10.0 1.7 15.0 5.6 20.0 15.6 23.9 21.7 21.7 8.9 6.7 0.6 2 4.4 4.4 1.1 8.9 15.6 17.8 22.2 20.6 24.4 12.2 5.6 2.8 3 8.3 -5.6 1.1 16.7 14.4 18.9 23.9 20.6 23.3 13.3 11.1 5.0 4 -4.4 -3.9 13.9 6.7 16.1 18.3 25.6 21.1 23.9 14.4 8.9 0.0 5 -7.8 1.7 3.9 10.0 14.4 20.0 19.4 22.2 21.1 15.6 8.9 0.0 6 -5.6 11.7 10.0 16.7 17.8 20.0 17.2 21.1 21.1 20.0 8.9 -4.4 7 -0.6 -1.7 16.7 20.0 15.6 20.0 17.2 20.0 20.6 13.3 11.1 -3.9 8 3.3 -1.1 15.0 13.9 14.4 21.1 20.0 21.1 21.1 15.6 5.0 -1.7 9 16.1 0.6 5.6 11.1 15.0 20.6 22.2 22.8 23.3 15.6 10.6 3.3 10 10.0 3.3 7.2 12.2 16.1 21.7 23.3 20.6 24.4 17.2 8.9 0.0 11 3.3 2.2 13.3 21.1 14.4 20.6 20.0 20.6 23.9 16.1 8.9 -4.4 12 4.4 1.7 16.1 21.1 16.1 21.7 21.1 21.7 21.7 16.7 13.9 -1.1 13 4.4 3.3 17.2 20.0 14.4 21.1 21.7 23.3 21.7 16.7 10.0 -1.7 14 -1.1 7.2 13.3 20.6 16.1 21.7 22.2 23.9 21.7 18.3 4.4 0.0 15 -8.3 5.6 15.6 23.3 18.9 21.1 22.8 23.9 23.3 17.2 3.3 -1.1 16 -5.6 3.3 8.9 12.2 17.2 21.1 22.8 20.0 22.2 18.3 0.0 -7.2 17 3.3 3.9 11.1 15.0 14.4 20.6 21.7 22.2 22.8 17.2 2.2 -5.0 18 12.8 5.0 14.4 16.7 17.2 21.1 22.8 21.1 23.9 18.9 2.2 1.7 19 11.7 2.8 8.9 20.0 18.9 21.7 21.7 22.8 22.2 7.8 5.6 3.3 20 13.9 8.9 13.9 21.7 17.2 21.1 21.7 22.8 21.1 8.3 4.4 11.1 21 6.7 16.1 14.4 18.3 18.9 22.8 20.0 22.8 21.7 10.0 2.8 7.2 22 8.3 5.0 14.4 10.6 18.9 24.4 20.6 23.3 17.2 12.2 0.0 -0.6 23 7.8 14.4 11.1 13.9 19.4 23.3 22.8 21.1 17.8 8.9 -1.7 2.8 24 6.7 14.4 20.0 16.7 20.0 25.0 22.8 20.6 16.7 7.2 0.6 5.0 25 1.7 14.4 9.4 15.6 20.0 24.4 21.7 21.7 21.1 7.2 2.2 3.3 26 4.4 8.3 15.6 13.3 20.0 23.3 21.7 23.3 22.8 8.3 0.0 3.3 27 4.4 10.0 21.1 17.8 21.1 24.4 22.2 22.8 22.2 7.8 0.0 0.6 28 -2.2 7.2 15.0 14.4 18.9 25.6 22.8 24.4 21.1 10.0 2.8 2.8 29 -1.1 14.4 7.8 15.6 19.4 23.9 23.9 23.3 21.1 9.4 3.3 7.8 30 0.0 0.0 9.4 17.8 20.0 21.7 21.1 22.2 8.9 10.0 1.1 12.2 31 1.1 0.0 3.3 0.0 17.8 0.0 19.4 22.2 0.0 12.8 0.0 1.1 ----------------------------------------------------------------------------------------- Max 16.1 16.1 21.1 23.3 21.1 25.6 25.6 24.4 24.4 20.0 13.9 12.2 Min -8.3 -5.6 1.1 5.6 14.4 15.6 17.2 20.0 8.9 7.2 -1.7 -7.2 Mean 3.6 5.5 11.7 15.6 17.4 21.5 21.7 22.0 21.3 13.1 5.1 1.4 -----------------------------------------------------------------------------------------