Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1971. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 2.2 2.2 12.2 16.7 11.7 21.7 22.2 18.3 18.9 19.4 16.7 5.0 2 11.1 4.4 3.3 6.1 13.9 21.7 21.7 20.0 20.6 21.7 11.7 3.9 3 11.7 2.2 -4.4 6.7 13.9 21.7 22.8 19.4 22.2 21.7 11.1 3.3 4 -1.1 13.9 -2.8 8.3 17.8 20.0 21.7 21.1 23.9 17.2 6.1 4.4 5 -6.7 -2.2 5.6 5.6 20.6 18.3 22.2 21.1 23.9 19.4 7.8 5.6 6 -4.4 5.6 6.7 6.7 22.2 18.3 22.2 20.6 23.3 18.3 7.2 6.7 7 -2.2 0.0 0.6 3.9 21.7 21.1 24.4 21.1 23.9 16.1 7.2 2.8 8 -2.8 -8.3 1.1 4.4 20.6 21.7 22.8 20.0 21.7 17.8 7.2 10.6 9 -3.3 -4.4 8.3 13.3 16.7 22.2 22.8 21.1 22.2 17.8 13.9 11.1 10 10.0 -3.3 5.6 10.6 20.6 23.9 23.9 21.7 23.3 8.9 6.1 7.2 11 7.2 7.8 8.3 11.7 17.2 23.3 22.8 22.8 23.9 11.1 7.2 5.0 12 4.4 8.3 16.7 15.6 13.9 23.9 22.8 23.9 22.8 8.9 7.8 10.6 13 7.2 -1.1 16.7 16.7 10.0 22.8 22.2 21.1 22.2 15.6 12.8 7.8 14 15.0 2.8 18.3 12.8 11.7 23.9 23.3 21.1 20.6 14.4 16.7 9.4 15 5.6 11.1 7.2 12.8 13.3 21.7 23.3 21.1 20.6 18.3 11.7 6.7 16 -0.6 11.1 7.8 15.6 15.6 21.1 23.3 21.7 20.0 20.6 16.1 8.9 17 5.6 14.4 8.3 12.8 16.7 23.3 23.9 21.7 18.9 20.6 20.0 10.0 18 6.1 17.8 15.6 16.7 20.0 22.8 22.8 21.1 21.1 23.3 12.2 1.7 19 -2.2 13.9 3.9 20.0 17.8 22.8 22.2 21.1 14.4 20.6 4.4 8.3 20 -2.8 10.0 3.9 9.4 14.4 20.0 23.9 22.2 8.9 15.6 5.0 10.0 21 8.3 6.7 8.3 8.3 18.3 21.1 23.3 22.2 13.9 11.7 10.6 7.2 22 11.1 -2.2 10.6 19.4 29.4 20.0 23.9 22.2 17.8 22.8 8.3 5.6 23 11.7 1.7 8.3 13.9 22.2 20.6 24.4 22.8 20.6 12.8 5.6 7.2 24 11.7 10.0 4.4 11.1 17.8 20.0 23.3 23.3 20.6 11.1 3.3 10.0 25 6.1 12.8 9.4 14.4 16.1 21.1 19.4 22.8 21.1 14.4 3.3 11.7 26 6.7 12.2 3.9 18.9 20.0 21.1 23.3 21.1 22.2 17.2 3.3 13.3 27 3.9 4.4 10.6 20.0 21.7 23.3 21.7 21.1 22.2 11.7 6.7 20.0 28 5.6 8.9 19.4 16.7 17.8 21.1 23.3 22.8 22.2 18.3 11.1 10.0 29 11.1 0.0 12.2 19.4 22.2 23.3 22.2 21.1 20.6 19.4 5.6 11.7 30 10.6 0.0 7.2 14.4 21.1 23.9 17.8 20.0 19.4 17.8 5.6 13.9 31 5.0 0.0 7.2 0.0 21.7 0.0 17.8 19.4 0.0 16.7 0.0 9.4 ----------------------------------------------------------------------------------------- Max 15.0 17.8 19.4 20.0 29.4 23.9 24.4 23.9 23.9 23.3 20.0 20.0 Min -6.7 -8.3 -4.4 3.9 10.0 18.3 17.8 18.3 8.9 8.9 3.3 1.7 Mean 4.9 5.7 7.9 12.8 18.0 21.7 22.5 21.3 20.6 16.8 9.1 8.4 -----------------------------------------------------------------------------------------