Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1930. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 16.7 7.8 10.0 18.9 18.3 13.3 21.1 23.3 22.8 15.0 3.9 1.1 2 1.7 9.4 0.0 18.9 18.9 14.4 22.2 22.8 20.6 13.3 11.1 3.9 3 1.7 12.8 -2.2 13.3 20.0 18.3 22.2 23.9 21.7 15.0 8.9 9.4 4 -1.1 8.3 0.0 13.3 20.6 18.9 21.7 23.9 20.0 17.8 7.8 12.8 5 1.1 3.3 7.2 11.7 20.0 21.7 21.1 23.9 20.0 16.1 10.0 6.1 6 11.7 5.0 16.1 12.8 15.6 19.4 21.7 19.4 21.1 18.3 5.0 2.2 7 2.2 4.4 8.9 12.8 10.6 15.0 21.1 20.6 22.8 13.9 5.0 3.9 8 -2.8 5.6 2.2 13.9 17.8 16.7 21.7 22.2 23.3 15.0 7.8 1.7 9 -3.3 10.0 5.0 11.7 21.7 18.9 21.1 22.2 23.3 17.8 10.0 4.4 10 -7.2 5.6 14.4 11.1 16.7 17.2 18.9 22.2 20.0 20.6 11.7 10.0 11 -4.4 4.4 5.6 12.8 13.9 15.6 21.1 23.3 21.1 21.1 12.2 7.2 12 0.0 13.9 6.1 12.8 18.3 18.9 21.7 23.9 22.2 21.1 12.8 5.6 13 6.1 12.8 9.4 15.0 18.9 22.8 21.1 25.0 22.2 17.8 14.4 3.9 14 4.4 8.9 11.1 16.7 18.9 21.7 24.4 22.8 23.3 14.4 12.8 4.4 15 -3.3 7.2 15.0 17.8 17.8 21.1 22.8 23.3 21.7 15.0 15.0 2.8 16 -10.6 0.0 14.4 17.2 22.2 20.0 20.0 23.3 15.6 17.2 5.6 1.1 17 -12.2 1.1 16.7 13.9 20.6 20.0 21.1 22.2 15.0 11.1 8.3 -2.8 18 -20.6 4.4 8.3 12.2 15.0 20.0 21.1 23.9 15.0 10.6 11.7 4.4 19 -12.2 7.2 1.1 12.2 15.0 18.3 23.3 23.9 16.7 11.1 10.6 -2.2 20 -12.2 9.4 7.2 10.6 14.4 20.0 22.8 23.9 18.3 10.6 8.9 1.1 21 -7.2 15.0 13.3 12.8 18.3 20.6 23.9 23.9 19.4 11.1 3.9 1.1 22 -12.2 17.2 8.3 12.8 21.1 22.8 22.2 22.8 19.4 11.1 6.7 -2.2 23 -10.6 16.7 7.2 12.8 14.4 23.9 21.7 20.6 21.1 11.1 3.9 -2.2 24 -4.4 19.4 10.0 12.8 13.3 24.4 21.7 22.8 21.7 6.1 4.4 0.6 25 -2.2 12.2 2.8 15.0 12.2 22.8 22.8 18.9 21.1 5.6 -1.7 7.8 26 6.7 5.0 1.7 15.0 12.8 22.2 22.8 20.0 15.0 7.2 3.9 -1.1 27 6.1 9.4 0.0 17.2 15.0 21.1 20.6 20.0 11.7 17.2 0.0 0.6 28 2.2 8.3 0.6 18.3 18.9 22.2 21.7 18.3 15.0 15.0 4.4 2.2 29 1.1 0.0 1.7 12.8 17.2 21.1 23.3 18.9 13.3 8.9 14.4 -2.2 30 -3.3 0.0 2.2 16.7 18.9 23.3 23.9 19.4 17.8 5.6 6.7 3.9 31 -3.3 0.0 5.6 0.0 12.8 0.0 25.6 21.1 0.0 3.9 0.0 2.8 ----------------------------------------------------------------------------------------- Max 16.7 19.4 16.7 18.9 22.2 24.4 25.6 25.0 23.3 21.1 15.0 12.8 Min -20.6 0.0 -2.2 10.6 10.6 13.3 18.9 18.3 11.7 3.9 -1.7 -2.8 Mean -2.3 8.8 6.8 14.2 17.1 19.9 22.0 22.2 19.4 13.4 8.0 3.0 -----------------------------------------------------------------------------------------