Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 4. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 15.4 9.1 7.7 10.4 11.0 18.2 21.3 23.2 18.2 18.3 16.0 0.3 2 16.5 1.1 11.0 14.8 8.6 21.0 23.3 23.5 20.5 18.0 11.0 3.8 3 18.0 0.8 15.7 13.4 10.7 18.0 23.7 24.1 17.9 17.7 6.8 3.2 4 5.3 4.2 11.6 13.2 13.3 19.6 22.4 23.3 21.5 17.9 4.2 4.7 5 -1.2 4.2 11.6 13.8 12.8 19.1 23.2 24.0 21.7 17.1 7.0 11.9 6 -3.5 2.3 8.4 13.3 14.4 20.9 22.7 24.6 22.8 18.0 8.7 12.1 7 0.7 -0.6 10.3 12.1 17.1 20.7 23.0 22.7 18.9 19.3 9.9 8.8 8 4.4 0.8 6.7 12.4 19.3 20.1 23.6 20.4 17.5 20.3 12.7 8.1 9 4.8 8.1 9.3 14.9 17.6 20.5 22.7 23.6 16.9 17.7 11.4 8.6 10 1.9 6.0 6.6 11.0 18.6 20.5 20.5 23.0 20.1 17.1 11.9 8.6 11 1.4 5.0 10.5 8.5 19.6 23.1 20.6 21.1 21.9 15.7 8.4 5.8 12 4.0 0.9 10.8 8.2 20.5 23.1 20.7 18.7 21.3 14.1 6.8 7.1 13 11.0 -1.8 9.7 6.6 17.6 22.3 21.1 19.1 20.6 15.6 9.5 3.6 14 11.8 -2.0 14.7 5.4 15.2 21.3 22.1 17.9 22.0 12.0 9.4 0.6 15 14.1 -0.5 13.2 9.3 14.2 19.6 23.4 18.3 21.7 11.2 11.3 -3.1 16 15.0 2.2 14.1 14.7 15.8 18.9 23.4 18.3 22.5 13.1 17.0 5.4 17 8.7 4.3 13.4 14.2 19.3 22.1 22.3 20.1 22.1 17.9 11.7 4.1 18 3.9 4.3 15.7 16.6 22.0 22.6 23.9 19.8 23.2 24.0 12.9 3.3 19 -0.3 8.3 18.6 17.7 20.9 21.7 22.4 20.2 21.1 22.9 12.6 5.3 20 -1.2 12.2 18.1 17.9 20.2 21.3 21.1 20.2 18.0 22.7 14.7 3.7 21 1.1 7.9 13.6 19.3 20.3 21.9 21.5 20.1 17.7 22.7 16.1 9.3 22 5.9 7.3 10.4 20.5 20.7 21.8 22.1 20.4 19.3 19.0 14.8 -1.5 23 9.8 13.4 8.5 20.5 21.9 20.3 21.9 23.5 18.3 18.8 11.5 -6.4 24 11.6 8.8 15.6 16.0 21.7 22.0 22.1 24.3 19.8 20.3 6.2 -4.5 25 9.7 2.2 17.5 15.9 21.3 19.6 22.1 24.2 20.1 20.5 3.1 -5.2 26 1.4 0.3 18.3 14.9 20.1 20.1 20.1 24.8 18.9 19.1 6.2 -1.8 27 -2.8 3.2 17.7 14.0 21.3 20.4 19.7 23.7 18.9 22.0 8.2 0.8 28 -1.0 5.8 16.6 13.6 20.0 21.3 22.3 20.9 20.9 21.9 6.5 5.4 29 5.9 9.5 11.8 16.0 23.2 21.0 22.9 22.2 16.6 20.9 7.6 11.6 30 3.4 0.0 10.2 20.7 24.4 20.2 21.5 20.1 16.3 19.5 3.8 13.9 31 0.7 0.0 11.0 0.0 17.0 0.0 23.3 19.8 0.0 20.3 0.0 15.3 ----------------------------------------------------------------------------------------- Max 18.0 13.4 18.6 20.7 24.4 23.1 23.9 24.8 23.2 24.0 17.0 15.3 Min -3.5 -2.0 6.6 5.4 8.6 18.0 19.7 17.9 16.3 11.2 3.1 -6.4 Mean 5.7 4.4 12.5 14.0 18.1 20.8 22.2 21.6 19.9 18.6 9.9 4.6 -----------------------------------------------------------------------------------------