Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1968. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -0.6 16.1 -2.2 13.9 11.7 21.1 22.8 21.1 19.4 16.7 16.1 1.7 2 5.6 4.4 6.1 15.6 14.4 18.9 22.2 21.7 22.2 18.3 16.1 3.9 3 3.3 2.2 2.2 18.3 17.8 18.3 21.1 22.2 22.2 21.1 11.7 6.1 4 0.0 3.9 0.0 5.6 15.6 19.4 20.6 23.3 25.0 16.7 5.6 1.1 5 2.2 7.2 6.1 4.4 13.9 20.0 17.2 21.7 20.0 15.6 8.9 2.2 6 3.3 4.4 7.2 6.7 12.8 18.3 17.2 22.2 19.4 17.2 10.0 0.6 7 -8.3 0.6 6.7 17.2 20.0 21.7 20.0 22.8 19.4 12.8 6.1 2.8 8 -6.7 1.1 11.1 6.7 18.3 21.7 20.6 23.3 21.7 20.6 1.7 -1.7 9 -2.8 1.7 15.6 14.4 19.4 22.2 19.4 23.9 21.1 19.4 0.6 0.0 10 -0.6 7.2 8.9 15.0 16.7 22.2 21.1 24.4 17.2 13.3 3.9 9.4 11 1.7 3.3 2.2 12.8 17.8 22.2 22.2 23.3 15.0 18.3 1.7 12.2 12 3.9 -0.6 1.1 13.3 16.1 23.9 21.1 23.9 17.2 20.0 1.1 16.1 13 -2.2 5.0 -0.6 16.1 21.7 23.3 22.2 25.0 16.1 20.6 5.6 2.8 14 -5.0 1.1 2.2 18.9 22.8 21.7 23.9 21.7 17.2 21.1 15.6 -1.7 15 -0.6 1.7 10.6 10.6 22.2 22.8 23.3 25.0 17.8 21.7 14.4 -1.7 16 -1.1 1.7 10.0 17.2 22.2 22.8 23.9 25.6 23.3 18.3 6.1 1.1 17 0.6 4.4 12.8 20.6 16.1 21.7 22.2 23.9 15.0 10.6 10.0 12.2 18 10.6 1.7 16.1 19.4 12.8 21.1 22.8 21.1 13.9 11.1 3.3 16.7 19 7.2 6.7 18.3 20.0 14.4 20.6 22.8 21.7 13.9 11.1 0.0 2.8 20 10.6 3.9 8.3 15.6 12.8 21.1 21.7 22.2 20.0 14.4 3.9 4.4 21 10.6 0.0 2.8 18.3 15.0 20.6 21.1 22.2 22.2 13.3 6.1 7.8 22 4.4 -2.2 0.0 19.4 20.0 21.1 23.3 22.2 20.6 14.4 8.9 6.1 23 5.0 -3.9 -1.1 11.1 22.2 20.0 22.2 22.2 22.2 14.4 12.8 -2.8 24 3.3 -3.3 4.4 6.7 21.7 18.9 22.8 22.2 19.4 11.1 8.9 -1.7 25 3.3 2.2 6.1 7.8 22.2 24.4 22.2 22.8 18.3 6.1 5.6 1.7 26 10.0 6.1 6.1 12.8 20.0 18.9 21.1 23.3 15.0 8.3 15.0 12.8 27 16.7 6.7 13.3 19.4 15.6 17.2 21.7 22.2 13.3 11.7 6.1 12.2 28 16.7 7.2 14.4 16.1 14.4 20.0 21.7 17.2 15.6 8.9 2.8 1.1 29 16.1 -1.1 15.0 12.2 17.8 22.8 22.2 16.7 15.6 10.0 3.3 2.8 30 15.0 0.0 17.2 11.1 21.1 23.9 23.3 18.9 17.2 15.0 5.6 12.2 31 10.0 0.0 15.6 0.0 21.1 0.0 23.9 21.1 0.0 18.3 0.0 -6.1 ----------------------------------------------------------------------------------------- Max 16.7 16.1 18.3 20.6 22.8 24.4 23.9 25.6 25.0 21.7 16.1 16.7 Min -8.3 -3.9 -2.2 4.4 11.7 17.2 17.2 16.7 13.3 6.1 0.0 -6.1 Mean 4.3 3.1 7.6 13.9 17.8 21.1 21.7 22.3 18.6 15.2 7.2 4.4 -----------------------------------------------------------------------------------------