Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1919. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -3.3 11.7 -3.9 10.0 11.1 18.3 22.2 21.7 21.7 18.9 12.2 1.7 2 -5.6 11.1 4.4 10.0 14.4 12.2 21.1 20.0 17.2 15.6 5.0 -1.1 3 -8.9 9.4 8.9 13.3 17.2 7.2 21.1 21.1 15.6 21.1 7.2 -1.7 4 -9.4 2.2 13.9 7.2 19.4 11.1 20.6 22.2 15.0 21.7 9.4 0.6 5 -6.1 -1.7 -0.6 16.1 17.8 10.0 20.6 21.1 16.1 21.1 10.0 9.4 6 -4.4 2.8 -1.1 18.9 17.8 16.1 20.0 20.6 16.1 21.1 12.8 9.4 7 8.3 2.8 1.7 15.6 15.6 19.4 22.8 21.1 19.4 20.0 11.7 7.8 8 -6.1 1.1 7.2 15.0 13.3 19.4 21.7 21.1 21.1 20.6 10.0 7.8 9 -4.4 -2.2 0.0 12.8 12.2 17.8 19.4 20.6 20.6 22.8 10.0 -3.9 10 -4.4 -2.2 9.4 2.2 11.1 17.8 18.9 21.1 19.4 21.1 6.7 -7.8 11 -5.0 3.3 6.7 3.9 15.6 22.2 20.6 22.2 20.6 9.4 0.6 -3.9 12 -0.6 12.8 3.3 12.8 13.9 21.1 22.2 22.8 21.7 13.9 4.4 5.6 13 3.9 12.2 11.7 13.3 12.2 19.4 22.2 22.2 13.3 15.6 -1.1 -6.1 14 5.0 2.8 16.7 16.7 15.6 21.7 22.2 22.8 22.2 16.7 -2.8 -7.8 15 2.2 -3.9 18.9 16.1 14.4 19.4 21.7 23.9 22.8 17.8 0.6 -6.7 16 0.6 0.6 13.3 3.3 17.2 19.4 20.6 23.9 22.2 16.7 7.2 -3.9 17 -3.9 4.4 5.0 1.7 16.1 16.7 21.7 22.2 21.7 11.1 2.2 7.2 18 -1.7 0.6 3.9 6.7 17.2 20.6 20.6 22.2 21.7 10.6 4.4 11.7 19 3.9 5.0 2.8 9.4 16.1 21.1 23.9 21.1 23.3 12.8 7.2 6.1 20 6.1 4.4 9.4 13.3 10.0 19.4 24.4 22.2 22.8 18.9 10.6 3.3 21 12.8 1.7 3.3 10.6 12.8 20.0 22.8 21.1 24.4 21.1 16.1 1.7 22 10.0 6.7 8.9 12.2 9.4 22.8 22.2 20.6 18.3 17.8 12.8 -2.2 23 8.3 -1.1 6.1 13.9 16.7 22.8 20.6 20.6 15.6 19.4 8.3 0.6 24 2.8 8.3 12.8 16.1 18.3 21.7 20.6 22.2 16.1 23.3 12.2 2.2 25 10.0 5.6 14.4 15.0 16.7 22.2 18.9 22.2 15.6 22.2 16.1 1.1 26 7.8 -5.0 8.3 17.8 17.2 22.2 19.4 20.6 17.2 22.2 8.9 1.1 27 8.9 0.0 1.1 13.3 15.6 22.2 23.3 18.9 18.3 22.2 2.8 -2.2 28 2.8 1.1 1.1 20.6 16.1 22.2 22.2 20.6 21.7 9.4 1.1 0.6 29 2.2 0.0 11.1 15.6 18.3 22.8 21.1 21.7 20.0 8.9 1.1 -1.1 30 -0.6 0.0 12.8 12.8 16.7 23.3 22.2 21.1 16.7 14.4 -3.3 7.2 31 6.7 0.0 11.7 0.0 18.3 0.0 22.2 20.0 0.0 21.1 0.0 8.9 ----------------------------------------------------------------------------------------- Max 12.8 12.8 18.9 20.6 19.4 23.3 24.4 23.9 24.4 23.3 16.1 11.7 Min -9.4 -5.0 -3.9 1.7 9.4 7.2 18.9 18.9 13.3 8.9 -3.3 -7.8 Mean 1.2 3.4 7.2 12.2 15.3 19.1 21.4 21.5 19.3 17.7 6.8 1.5 -----------------------------------------------------------------------------------------