Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1956. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 3.3 6.7 12.8 19.4 16.1 18.3 22.2 23.3 18.9 20.6 7.2 5.0 2 5.0 -2.8 13.3 19.4 15.6 16.1 22.8 23.9 19.4 17.8 11.1 7.2 3 5.6 -3.9 10.0 17.2 16.1 20.6 22.2 23.9 20.0 18.9 7.8 7.8 4 1.1 -3.9 8.9 10.0 16.7 20.0 22.2 21.1 20.0 17.8 8.3 15.6 5 3.9 -2.2 16.7 13.3 16.1 20.0 24.4 22.8 19.4 16.1 10.0 18.3 6 6.7 -1.1 20.0 7.8 18.9 21.7 23.9 25.0 21.7 16.7 12.8 20.0 7 7.2 1.7 6.1 7.8 18.3 20.6 23.3 23.9 21.1 19.4 13.3 20.6 8 -0.6 10.0 -2.8 8.3 18.9 20.6 23.3 23.9 15.0 13.9 8.3 3.3 9 -0.6 3.3 1.7 13.3 18.3 21.7 23.9 22.2 15.0 15.6 0.6 -1.7 10 0.6 2.8 9.4 3.9 20.6 21.1 21.1 22.2 17.8 13.9 3.3 -1.1 11 -1.1 -1.7 8.9 2.8 20.6 21.1 21.1 23.3 18.3 13.9 6.1 6.1 12 -2.2 3.3 0.0 8.3 22.2 19.4 22.2 23.3 17.8 16.1 10.0 8.3 13 -2.8 3.9 -1.1 13.9 22.2 19.4 22.8 23.9 19.4 18.9 10.6 0.6 14 -0.6 6.7 1.1 15.6 22.2 18.9 22.8 23.9 20.0 16.7 18.3 2.2 15 4.4 11.1 8.9 11.7 17.2 22.2 22.2 23.9 20.0 15.6 12.8 6.7 16 -1.1 8.9 0.0 6.1 12.8 23.9 21.1 23.9 21.1 16.7 3.9 1.7 17 1.1 17.8 1.1 10.6 15.0 22.8 21.1 22.2 19.4 16.7 3.3 11.7 18 -2.2 6.7 7.2 10.0 16.1 19.4 21.1 24.4 19.4 15.0 2.8 2.8 19 -5.0 13.3 6.1 9.4 16.1 18.9 22.2 23.9 19.4 14.4 12.8 2.8 20 -3.3 4.4 3.3 8.9 17.2 21.1 23.9 19.4 21.1 15.6 14.4 6.1 21 5.0 6.1 8.9 12.8 16.7 20.6 20.0 17.8 21.1 12.8 6.1 5.0 22 5.0 10.0 5.6 12.2 18.9 22.2 20.6 16.7 21.1 8.9 3.9 10.6 23 4.4 15.6 6.1 13.3 20.0 22.8 22.2 18.9 19.4 13.9 8.9 7.2 24 5.6 18.3 8.9 12.2 21.1 22.8 22.8 19.4 20.6 14.4 3.9 0.6 25 3.9 8.9 12.2 13.3 18.3 22.8 21.7 18.3 20.0 15.0 5.6 0.6 26 6.1 3.9 13.9 17.2 20.0 22.8 22.2 20.6 15.6 10.6 4.4 1.7 27 13.9 13.3 17.8 18.3 21.1 23.3 21.1 18.9 15.6 8.9 -0.6 1.7 28 16.7 5.6 14.4 20.0 22.2 23.9 22.2 22.2 16.7 15.6 1.7 1.7 29 18.9 4.4 8.9 21.7 22.8 22.8 22.8 23.9 18.9 19.4 -2.2 3.3 30 -1.1 0.0 9.4 18.9 20.0 22.2 23.3 23.9 18.3 15.0 1.1 7.8 31 0.6 0.0 15.0 0.0 18.9 0.0 22.2 25.0 0.0 7.2 0.0 5.6 ----------------------------------------------------------------------------------------- Max 18.9 18.3 20.0 21.7 22.8 23.9 24.4 25.0 21.7 20.6 18.3 20.6 Min -5.0 -3.9 -2.8 2.8 12.8 16.1 20.0 16.7 15.0 7.2 -2.2 -1.7 Mean 3.2 5.9 8.2 12.6 18.6 21.1 22.3 22.3 19.1 15.2 7.0 6.1 -----------------------------------------------------------------------------------------