Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 1991. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 -2.2 1.7 13.3 8.3 16.1 24.4 21.1 22.2 21.7 19.4 1.7 2.8 2 3.9 2.8 7.2 11.7 19.4 21.7 21.7 21.7 21.1 17.8 -0.6 1.1 3 -0.6 5.6 5.6 15.0 17.8 18.9 21.7 22.2 20.6 18.9 -2.2 2.8 4 -0.6 12.8 5.0 16.1 16.7 17.8 21.7 22.8 21.7 20.0 -3.9 1.1 5 3.9 11.7 9.4 15.6 13.9 21.7 21.7 21.1 21.7 13.9 -1.1 1.7 6 2.8 8.9 13.9 16.1 9.4 21.1 22.8 22.8 22.2 11.7 6.1 8.9 7 0.6 5.6 9.4 15.6 12.2 18.9 23.3 22.8 22.8 11.1 3.9 15.6 8 2.2 4.4 5.0 18.3 15.0 20.0 22.2 22.2 23.3 10.6 -1.7 18.3 9 6.1 8.3 6.7 16.7 17.2 19.4 23.3 22.2 22.8 11.7 -1.7 12.8 10 4.4 6.7 7.2 15.6 17.2 19.4 22.8 23.3 21.7 14.4 1.1 10.0 11 2.8 8.9 8.9 19.4 22.2 20.0 22.8 23.3 21.7 15.6 7.8 13.9 12 0.0 12.8 14.4 21.7 22.2 21.7 22.2 22.2 21.7 17.2 9.4 16.7 13 1.1 14.4 8.9 17.8 20.0 22.2 21.7 23.9 22.2 18.3 9.4 14.4 14 3.9 11.7 6.7 16.7 20.0 23.3 22.2 21.7 21.7 17.8 12.8 6.1 15 6.7 3.3 7.2 11.1 20.0 19.4 22.8 22.8 23.3 12.8 18.9 1.1 16 3.3 1.7 7.2 15.0 20.0 21.1 23.9 22.2 22.2 12.2 18.9 3.9 17 5.6 7.8 11.1 17.8 17.8 20.0 21.1 23.3 21.1 13.3 10.6 4.4 18 7.2 13.3 7.2 16.1 19.4 22.2 22.2 24.4 16.7 15.0 9.4 10.6 19 6.1 6.7 9.4 16.7 20.6 22.2 21.7 23.9 12.2 15.6 11.7 7.8 20 3.9 3.9 13.3 12.2 20.6 21.7 24.4 23.9 12.2 14.4 7.8 10.6 21 1.1 7.8 18.3 11.1 20.0 22.2 22.8 22.2 15.0 12.2 3.9 7.8 22 -0.6 7.8 16.1 13.3 20.6 22.8 21.1 21.1 16.7 17.8 5.6 8.3 23 1.7 5.0 9.4 11.1 21.7 21.1 21.7 21.7 20.6 21.7 2.8 7.8 24 5.0 6.7 12.2 17.2 21.1 21.1 21.1 21.7 15.6 21.7 0.0 2.8 25 0.0 4.4 14.4 19.4 17.8 20.0 22.2 21.7 12.2 22.2 1.7 1.7 26 1.7 1.7 21.1 21.7 21.1 21.7 21.7 22.2 13.3 18.3 7.8 5.6 27 5.6 6.7 15.6 20.6 21.1 21.7 22.2 22.2 13.3 17.2 14.4 5.0 28 8.3 10.6 12.8 16.7 21.7 22.2 22.8 21.7 13.3 21.7 18.3 5.0 29 0.0 0.0 10.0 12.2 22.8 20.0 22.8 22.8 13.3 7.2 18.3 2.2 30 -1.7 0.0 5.6 12.2 22.8 21.7 22.8 22.2 17.2 6.7 6.7 4.4 31 -2.2 0.0 5.6 0.0 23.3 0.0 22.8 22.2 0.0 2.8 0.0 8.3 ----------------------------------------------------------------------------------------- Max 8.3 14.4 21.1 21.7 23.3 24.4 24.4 24.4 23.3 22.2 18.9 18.3 Min -2.2 1.7 5.0 8.3 9.4 17.8 21.1 21.1 12.2 2.8 -3.9 1.1 Mean 2.6 7.3 10.3 15.6 19.1 21.1 22.3 22.5 18.8 15.2 6.6 7.2 -----------------------------------------------------------------------------------------