Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1953. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 5.0 7.8 8.3 12.2 16.7 20.6 21.7 22.2 20.6 19.4 9.4 12.2 2 5.0 6.1 13.9 13.9 17.2 20.0 23.3 22.8 20.6 21.7 10.0 13.9 3 0.6 6.7 15.0 16.1 15.0 20.6 23.9 25.0 22.2 22.8 15.6 8.9 4 1.7 7.8 2.2 10.6 12.2 18.3 23.3 23.9 17.2 20.6 15.0 4.4 5 5.0 11.7 2.8 16.1 8.3 21.7 23.3 23.3 16.1 15.6 10.6 10.6 6 6.1 10.6 4.4 13.3 10.6 20.0 23.3 23.9 16.1 11.1 5.6 4.4 7 13.3 7.2 5.6 9.4 12.8 21.7 25.0 24.4 16.7 9.4 6.7 13.9 8 11.7 5.0 8.9 15.0 13.9 23.3 22.8 23.9 18.9 10.6 6.7 7.2 9 7.2 10.6 7.8 17.8 21.1 23.9 23.9 25.0 19.4 11.7 1.1 6.7 10 2.2 17.8 7.8 13.9 17.2 22.8 23.9 25.6 18.9 12.2 2.8 0.0 11 7.2 3.9 10.6 15.6 18.3 22.8 21.7 25.0 19.4 14.4 5.0 6.7 12 5.6 0.6 15.0 7.2 16.1 23.3 23.9 21.1 19.4 15.6 6.1 4.4 13 10.0 1.1 13.9 3.3 10.0 19.4 19.4 22.2 18.9 16.1 8.3 6.7 14 11.7 6.7 15.6 8.3 10.0 22.2 18.3 23.9 18.9 16.7 9.4 1.7 15 7.8 2.2 9.4 14.4 12.8 22.2 20.0 23.3 19.4 17.2 8.3 -1.1 16 -4.4 7.2 10.0 5.6 11.7 22.2 23.3 22.8 20.6 17.2 11.7 2.8 17 -5.0 2.2 11.7 13.3 18.3 22.2 23.9 23.9 20.0 14.4 11.1 6.7 18 1.1 1.7 16.7 6.7 16.7 22.2 23.9 23.9 22.2 17.2 16.1 3.9 19 5.6 8.9 11.1 3.3 15.6 23.9 25.0 20.6 19.4 16.7 16.1 5.0 20 9.4 5.0 12.8 5.6 16.7 23.3 25.0 19.4 20.6 16.1 3.3 5.0 21 1.7 -0.6 16.7 12.2 23.3 22.2 24.4 21.7 24.4 19.4 4.4 9.4 22 8.3 -2.2 15.0 14.4 21.7 21.7 25.6 19.4 17.2 19.4 1.1 -0.6 23 4.4 2.8 6.7 18.9 22.8 22.8 23.3 21.1 13.9 17.8 1.7 -5.6 24 2.8 2.8 7.8 16.1 23.9 23.3 21.7 21.1 15.6 15.6 21.1 -5.6 25 5.0 6.1 9.4 11.1 23.3 22.8 21.7 21.7 20.0 17.2 6.7 -3.9 26 11.1 2.2 11.7 9.4 21.7 23.9 22.2 21.7 18.9 13.9 3.3 -0.6 27 12.2 6.1 16.1 11.7 20.0 23.9 22.8 21.7 17.2 7.2 7.8 2.2 28 4.4 8.3 9.4 16.7 18.9 23.9 22.8 21.1 17.8 10.0 12.8 4.4 29 3.3 0.0 11.7 15.0 19.4 23.3 21.7 22.8 17.2 10.0 11.7 0.6 30 13.3 0.0 17.8 16.1 18.9 22.8 22.8 21.7 20.6 11.1 11.1 -0.6 31 13.3 0.0 18.3 0.0 20.6 0.0 22.8 21.1 0.0 11.7 0.0 -1.7 ----------------------------------------------------------------------------------------- Max 13.3 17.8 18.3 18.9 23.9 23.9 25.6 25.6 24.4 22.8 21.1 13.9 Min -5.0 -2.2 2.2 3.3 8.3 18.3 18.3 19.4 13.9 7.2 1.1 -5.6 Mean 6.0 5.6 11.1 12.1 17.0 22.2 22.9 22.6 18.9 15.2 8.7 3.9 -----------------------------------------------------------------------------------------