Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1937. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 9.4 0.0 -1.1 2.2 17.8 18.3 21.1 23.3 19.4 13.9 15.0 10.0 2 7.2 -2.2 2.2 11.7 9.4 18.3 23.3 23.3 22.2 15.6 17.2 7.8 3 -0.6 1.1 10.6 16.1 13.3 20.6 21.1 23.3 22.2 17.8 13.9 9.4 4 1.1 1.1 11.7 7.2 13.9 17.8 22.2 23.9 22.2 16.7 8.9 10.0 5 7.2 0.6 11.7 4.4 12.2 17.2 20.6 23.3 23.3 20.0 14.4 1.1 6 12.2 10.0 11.7 3.3 12.8 16.1 21.1 21.1 23.3 21.1 6.7 -4.4 7 6.1 13.9 6.7 9.4 15.0 17.8 22.8 22.2 22.8 21.1 17.8 -2.8 8 -3.9 16.7 9.4 8.9 16.1 22.2 20.0 23.3 22.8 20.6 21.1 -1.1 9 -6.1 3.3 4.4 4.4 17.2 23.3 22.2 22.8 21.1 17.2 14.4 -6.1 10 -5.6 0.6 5.0 5.0 18.3 21.7 20.6 23.9 22.2 15.0 12.2 -2.2 11 -2.8 -1.1 10.0 8.9 17.8 22.2 21.1 23.3 24.4 14.4 13.9 1.1 12 0.0 -0.6 12.8 13.9 19.4 21.1 21.7 23.9 17.8 13.9 11.1 3.3 13 3.9 11.1 15.6 17.2 17.2 22.2 21.7 22.8 17.2 13.9 10.6 12.2 14 10.6 2.2 3.3 17.2 10.0 22.2 22.2 23.9 16.1 11.7 11.1 2.8 15 0.6 9.4 3.9 17.8 13.9 22.8 22.2 22.8 18.9 6.7 15.0 2.2 16 -0.6 6.1 0.6 17.2 14.4 22.8 22.8 21.7 20.6 11.1 4.4 5.0 17 5.0 7.2 4.4 17.2 17.8 22.8 22.2 22.2 19.4 17.8 -2.2 4.4 18 5.0 7.8 8.3 17.2 15.0 22.2 22.8 22.8 18.3 14.4 2.2 2.2 19 -0.6 12.2 15.6 17.2 16.1 21.1 23.3 22.8 17.2 8.9 -3.3 2.2 20 7.2 12.2 7.8 18.9 19.4 21.1 22.8 22.8 18.9 7.2 -4.4 2.2 21 -2.2 -0.6 5.6 13.9 20.0 21.7 22.2 22.8 21.1 8.9 -3.3 5.6 22 -5.0 2.2 12.2 12.2 21.7 23.9 23.3 23.3 20.0 7.8 -2.2 7.2 23 -5.6 8.3 15.6 18.3 17.8 23.9 21.1 23.9 20.6 2.2 -2.2 6.1 24 -1.7 8.3 11.1 7.2 21.7 24.4 21.7 25.0 20.0 8.9 -3.3 10.0 25 1.7 6.7 8.3 7.2 20.0 22.8 22.2 22.2 21.1 11.1 0.6 13.9 26 0.6 2.8 1.7 11.7 20.0 22.2 22.8 22.2 17.2 15.6 6.1 10.6 27 0.6 1.1 0.6 13.3 18.9 23.3 22.2 22.2 12.2 10.6 7.8 17.2 28 6.1 -4.4 -0.6 20.0 19.4 24.4 23.3 23.3 11.7 11.7 -1.7 14.4 29 6.7 0.0 2.8 20.6 21.1 22.2 23.3 22.2 14.4 13.9 0.6 12.8 30 12.2 0.0 2.2 15.6 21.7 21.7 23.3 22.8 13.9 13.9 5.6 13.3 31 6.1 0.0 -2.2 0.0 18.3 0.0 23.3 21.1 0.0 15.0 0.0 13.3 ----------------------------------------------------------------------------------------- Max 12.2 16.7 15.6 20.6 21.7 24.4 23.3 25.0 24.4 21.1 21.1 17.2 Min -6.1 -4.4 -2.2 2.2 9.4 16.1 20.0 21.1 11.7 2.2 -4.4 -6.1 Mean 2.4 4.9 6.8 12.5 17.0 21.5 22.2 22.9 19.4 13.5 6.9 5.9 -----------------------------------------------------------------------------------------