Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1961. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 1.1 11.7 4.4 4.4 20.0 20.0 20.6 21.7 23.3 18.3 20.0 10.0 2 2.8 8.9 5.6 6.7 13.9 20.0 20.6 21.1 24.4 14.4 13.3 14.4 3 0.6 4.4 15.0 9.4 17.2 20.6 22.2 22.2 25.6 8.9 5.0 14.4 4 0.6 3.3 18.9 9.4 21.1 22.8 20.0 22.8 23.9 11.1 4.4 17.8 5 7.8 2.8 18.9 12.8 22.2 22.8 21.1 21.1 18.9 12.2 10.6 11.1 6 9.4 2.2 15.0 7.8 22.2 22.2 20.6 22.2 22.8 12.2 6.1 10.6 7 11.1 0.0 17.2 8.3 22.2 21.1 21.1 23.3 23.3 13.3 4.4 8.9 8 9.4 0.0 9.4 10.0 18.9 22.2 22.8 20.6 22.8 16.7 8.3 9.4 9 2.2 2.8 5.6 7.8 11.7 18.9 22.2 20.6 22.8 22.8 5.0 10.6 10 1.1 5.6 3.9 6.1 12.8 17.8 20.0 21.7 23.9 22.2 7.8 5.6 11 5.6 5.6 12.2 12.8 11.7 21.1 20.6 21.7 21.7 21.1 15.6 3.3 12 7.2 7.2 16.7 7.8 12.8 22.2 20.0 21.1 21.7 20.6 15.0 -2.2 13 6.1 13.3 11.1 6.7 19.4 22.8 20.0 22.2 22.2 18.9 13.3 -3.9 14 6.7 13.3 10.0 13.3 20.0 22.8 22.2 22.8 13.9 16.1 7.8 3.9 15 3.3 14.4 9.4 8.3 15.6 21.1 22.2 22.2 12.8 12.2 8.9 4.4 16 3.9 16.1 18.3 3.3 14.4 19.4 20.0 22.2 13.9 10.6 6.1 6.7 17 5.6 16.1 12.8 7.2 21.7 17.2 20.0 21.7 13.3 11.1 4.4 8.9 18 8.3 13.3 7.2 11.7 20.6 17.8 21.7 21.1 14.4 11.7 6.7 6.1 19 3.9 3.9 6.7 15.6 18.3 18.9 22.2 21.7 14.4 14.4 5.6 3.9 20 -2.8 5.0 6.1 20.6 18.9 17.2 22.8 21.1 18.9 10.0 6.7 1.1 21 -3.3 5.6 5.0 20.0 20.0 19.4 22.8 20.0 21.7 12.2 11.7 2.8 22 0.6 6.1 9.4 18.3 22.2 17.2 22.2 19.4 22.8 12.8 10.6 10.0 23 4.4 8.3 7.2 18.9 18.3 19.4 22.2 15.0 23.3 15.6 4.4 0.0 24 4.4 4.4 10.6 19.4 15.0 20.6 22.8 16.7 22.2 18.9 7.2 0.0 25 -4.4 1.1 10.6 22.2 16.1 21.1 21.7 17.2 17.2 17.8 7.2 1.1 26 -2.8 3.3 16.7 13.3 16.7 18.3 21.7 17.8 17.2 14.4 11.7 5.6 27 -3.9 12.8 16.1 18.3 12.8 19.4 21.1 18.9 19.4 11.1 8.9 3.3 28 -4.4 2.2 17.8 17.8 11.7 21.7 20.6 18.9 20.6 18.9 7.2 0.0 29 -4.4 0.0 13.3 16.1 16.7 21.1 20.6 19.4 19.4 21.1 7.2 -2.8 30 -1.1 0.0 8.3 19.4 17.2 20.6 21.1 20.0 22.2 21.1 6.7 2.2 31 2.8 0.0 5.6 0.0 16.7 0.0 22.8 22.2 0.0 21.1 0.0 5.6 ----------------------------------------------------------------------------------------- Max 11.1 16.1 18.9 22.2 22.2 22.8 22.8 23.3 25.6 22.8 20.0 17.8 Min -4.4 0.0 3.9 3.3 11.7 17.2 20.0 15.0 12.8 8.9 4.4 -3.9 Mean 2.6 6.9 11.1 12.5 17.4 20.3 21.4 20.7 20.2 15.6 8.6 5.6 -----------------------------------------------------------------------------------------