Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1980. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 1.1 -5.0 -7.2 10.6 14.4 21.1 22.8 20.6 23.9 16.7 7.2 11.7 2 3.3 1.1 -8.9 15.6 13.3 21.1 21.1 22.2 23.3 18.3 9.4 3.9 3 0.6 0.0 -6.7 13.9 13.9 21.1 22.2 24.4 20.0 12.8 9.4 2.2 4 -2.2 0.6 11.1 8.3 15.0 21.1 22.8 25.6 23.3 14.4 12.8 11.1 5 0.0 5.6 1.7 9.4 15.6 21.1 21.7 26.1 23.3 15.0 7.8 16.1 6 3.9 2.2 1.7 8.3 15.6 23.3 22.8 20.6 22.8 13.9 10.6 16.1 7 1.1 7.2 15.6 18.3 15.0 23.9 22.8 21.7 22.2 15.0 11.7 17.2 8 2.2 0.6 8.3 11.1 13.3 22.2 23.3 22.2 21.7 15.6 13.3 5.0 9 6.7 -3.3 5.0 6.7 10.6 20.6 22.8 23.3 22.2 14.4 17.2 3.9 10 11.1 -6.1 12.8 8.3 15.6 17.8 22.2 23.9 21.7 13.3 13.3 1.7 11 7.8 -2.8 12.2 17.8 21.1 18.9 22.2 23.9 22.2 15.6 13.9 -0.6 12 5.0 1.7 13.3 4.4 18.3 18.9 21.7 23.3 20.0 13.3 10.6 1.7 13 3.3 2.2 9.4 1.1 15.6 17.2 21.7 22.8 18.9 13.3 9.4 7.2 14 6.1 9.4 7.2 1.1 16.1 15.6 22.2 21.7 22.2 16.1 9.4 9.4 15 14.4 2.2 7.8 6.1 15.6 21.1 22.2 23.3 22.8 19.4 6.1 9.4 16 11.7 -3.9 15.6 7.8 15.0 22.2 22.2 24.4 22.2 20.0 4.4 7.2 17 8.3 -6.1 7.8 11.7 16.1 21.7 22.2 23.9 21.1 18.3 3.3 7.2 18 7.8 0.0 0.6 9.4 16.7 21.7 22.2 21.1 21.7 15.0 0.6 8.3 19 13.9 7.2 7.2 8.9 17.2 22.8 23.3 22.8 18.9 13.3 1.1 0.0 20 8.3 10.0 10.0 11.1 15.0 18.3 23.3 22.8 20.6 11.7 1.1 -1.7 21 6.7 10.6 4.4 11.1 16.7 18.3 22.2 21.7 23.9 11.1 5.0 -1.7 22 2.8 8.9 3.9 11.1 14.4 22.2 22.8 24.4 23.3 10.6 6.1 0.6 23 0.6 8.9 13.9 13.3 16.1 23.3 24.4 25.0 22.2 11.7 7.2 6.1 24 3.9 5.6 5.6 16.7 19.4 23.3 22.2 24.4 21.1 8.3 6.1 -1.7 25 8.3 1.1 6.7 12.8 23.3 23.3 22.8 21.1 22.2 4.4 -0.6 -6.7 26 3.3 -1.7 8.3 8.9 21.7 22.2 22.2 22.2 20.6 8.9 -0.6 -2.8 27 0.6 1.7 12.2 7.8 20.6 22.8 23.3 22.8 18.9 11.7 -1.7 2.8 28 0.6 6.1 12.2 8.3 19.4 21.7 22.8 21.1 16.7 5.0 -1.1 2.2 29 -0.6 2.8 8.9 12.2 21.1 22.8 19.4 23.3 16.1 3.9 2.8 5.0 30 1.7 0.0 7.2 15.6 21.1 22.2 22.8 22.2 16.7 0.0 7.8 1.7 31 -2.8 0.0 8.9 0.0 20.0 0.0 21.7 23.9 0.0 5.6 0.0 0.6 ----------------------------------------------------------------------------------------- Max 14.4 10.6 15.6 18.3 23.3 23.9 24.4 26.1 23.9 20.0 17.2 17.2 Min -2.8 -6.1 -8.9 1.1 10.6 15.6 19.4 20.6 16.1 0.0 -1.7 -6.7 Mean 4.5 2.3 7.0 10.3 16.9 21.1 22.4 23.0 21.2 12.5 6.8 4.6 -----------------------------------------------------------------------------------------