Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1989. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 3.3 12.8 8.3 7.8 16.1 22.2 21.7 22.8 25.0 16.7 8.3 4.4 2 14.4 0.6 8.3 17.2 15.6 21.7 21.7 22.2 24.4 16.7 6.1 5.6 3 9.4 -7.2 14.4 19.4 16.1 21.7 20.0 23.3 25.0 17.8 2.2 1.7 4 6.7 -8.3 -3.9 13.9 20.0 21.7 23.3 22.8 23.9 21.1 6.1 0.0 5 12.8 -7.8 -5.0 10.0 18.3 20.0 23.3 22.8 23.3 18.9 18.3 3.9 6 8.3 -7.8 -4.4 8.9 15.6 18.3 22.8 22.2 23.3 21.1 18.3 8.9 7 12.2 -6.7 -5.6 12.2 17.2 20.6 21.7 21.1 22.8 15.0 20.0 3.3 8 2.8 -3.9 -1.7 15.6 20.0 18.3 21.1 19.4 23.3 12.2 13.3 1.1 9 2.2 -2.2 2.8 11.1 21.1 18.3 22.2 17.8 24.4 13.9 7.2 -1.7 10 -1.1 0.6 7.2 0.0 13.3 21.1 22.8 17.2 22.8 15.6 11.7 4.4 11 11.1 5.0 7.2 2.8 15.0 19.4 23.3 18.9 22.2 15.6 10.0 -1.7 12 2.8 12.2 8.3 11.1 16.7 22.8 22.2 19.4 21.7 14.4 12.8 -5.6 13 0.6 15.0 12.8 10.0 15.6 18.9 23.3 19.4 15.0 16.7 15.0 -5.0 14 0.6 8.3 17.2 10.0 15.6 18.3 24.4 21.1 13.9 19.4 17.8 -2.2 15 0.6 6.7 12.8 8.3 18.3 16.7 23.3 21.1 11.7 15.6 8.3 -8.9 16 1.7 1.7 11.7 11.1 19.4 15.0 22.8 20.6 13.3 18.3 3.3 -11.7 17 2.2 6.1 17.8 17.2 21.7 16.7 22.8 21.1 15.6 11.1 3.3 -3.9 18 10.0 5.6 12.8 19.4 18.9 20.0 23.9 21.7 15.6 7.2 6.7 -0.6 19 12.8 5.0 12.8 17.2 21.1 22.8 25.0 21.7 15.6 2.8 8.3 -3.3 20 2.8 9.4 8.9 13.9 23.3 21.7 21.7 23.3 16.7 3.3 15.0 -5.6 21 0.0 6.1 -1.1 16.7 19.4 21.1 20.0 22.2 17.2 8.9 15.6 -6.7 22 0.6 2.2 4.4 16.7 22.8 21.7 19.4 22.8 16.7 13.3 6.1 -14.4 23 5.0 -2.8 2.2 17.2 22.2 20.6 21.1 22.2 13.3 16.1 0.6 -17.8 24 11.1 -0.6 7.2 16.7 22.2 21.1 18.9 23.3 10.0 16.1 1.1 -12.8 25 17.8 9.4 14.4 18.9 22.8 21.7 18.9 21.7 8.9 16.1 11.7 -5.0 26 8.3 10.0 17.8 21.1 23.3 22.8 20.6 22.8 12.2 17.2 10.6 0.6 27 6.1 7.2 20.0 19.4 23.3 23.3 21.7 23.9 13.3 16.1 13.3 2.8 28 9.4 6.7 7.8 18.9 20.6 21.1 21.1 22.8 12.2 18.3 5.0 4.4 29 8.9 0.0 13.9 15.6 18.9 22.2 21.7 23.3 13.9 18.9 5.6 10.6 30 5.6 0.0 12.8 15.6 22.8 22.2 22.8 23.3 16.1 8.9 5.0 4.4 31 8.3 0.0 8.3 0.0 22.2 0.0 22.8 23.3 0.0 3.9 0.0 2.2 ----------------------------------------------------------------------------------------- Max 17.8 15.0 20.0 21.1 23.3 23.3 25.0 23.9 25.0 21.1 20.0 10.6 Min -1.1 -8.3 -5.6 0.0 13.3 15.0 18.9 17.2 8.9 2.8 0.6 -17.8 Mean 6.4 3.0 8.1 13.8 19.3 20.5 22.0 21.7 17.8 14.4 9.6 -1.6 -----------------------------------------------------------------------------------------