Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 2003. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 1.6 5.2 6.7 9.3 19.2 19.4 23.9 22.9 23.1 14.5 20.4 11.1 2 2.3 10.1 7.9 11.3 18.1 23.1 21.5 23.8 21.4 15.6 19.2 11.0 3 1.0 6.7 6.6 17.7 19.4 20.3 22.4 24.1 22.0 12.2 19.8 10.2 4 3.2 1.6 7.5 18.3 22.4 19.5 21.6 23.2 22.2 14.2 19.3 5.1 5 4.3 4.8 2.2 16.9 22.6 18.4 21.9 23.8 23.2 19.5 12.9 3.0 6 6.0 3.7 0.2 16.8 23.5 19.0 24.3 24.1 19.9 18.6 8.5 -1.7 7 0.5 na 6.6 9.8 23.8 18.0 22.5 24.8 18.5 18.9 7.4 0.3 8 5.2 -0.4 9.0 7.1 24.5 18.2 21.8 25.5 18.9 20.0 7.5 17.9 9 9.9 3.5 9.0 2.8 22.9 18.5 21.7 22.8 19.1 20.7 10.3 7.3 10 3.6 4.8 6.7 4.6 23.5 23.9 22.7 23.3 23.5 19.4 10.5 3.6 11 3.6 4.6 9.7 10.9 20.1 19.9 22.0 22.5 20.2 18.3 15.8 1.8 12 1.9 8.6 17.9 11.9 18.5 19.5 20.7 20.1 18.5 20.3 18.9 7.5 13 1.9 16.3 15.6 13.4 18.2 19.2 22.1 19.4 17.4 19.8 12.1 2.0 14 3.3 16.5 11.9 16.0 21.2 17.4 22.5 20.2 18.7 13.4 10.3 -0.5 15 2.2 5.6 11.9 17.8 23.0 19.3 22.5 21.9 17.8 11.1 18.3 7.3 16 -0.1 2.0 14.7 18.7 23.1 20.0 23.6 25.3 19.6 13.2 18.7 2.9 17 -3.2 -0.1 13.8 14.4 19.1 20.0 21.4 23.7 18.5 16.2 17.4 -0.6 18 -3.2 6.4 11.8 17.6 17.4 20.8 22.5 23.1 21.2 11.4 11.4 3.3 19 1.1 9.4 7.9 19.5 19.4 21.7 23.2 23.1 17.5 14.8 7.7 2.1 20 10.6 8.4 12.5 14.6 15.9 22.2 22.4 23.3 18.5 15.3 8.6 3.3 21 6.4 9.1 7.4 14.1 15.9 22.2 23.5 23.4 19.2 14.6 10.2 5.0 22 2.5 9.4 8.9 14.9 17.1 23.1 24.5 22.2 18.5 15.2 15.6 11.2 23 -3.5 1.7 7.6 16.5 17.8 24.4 21.8 23.0 19.0 16.3 2.9 4.5 24 -5.3 -3.9 9.6 20.5 20.3 24.1 23.0 23.1 20.5 16.1 -1.0 2.8 25 2.7 -5.7 15.3 14.6 20.9 23.7 22.1 24.2 19.9 14.4 -1.4 4.8 26 2.1 -2.4 11.0 14.4 16.6 23.1 22.8 24.1 19.4 11.2 10.4 10.0 27 3.3 1.0 8.5 15.7 18.7 20.2 22.4 23.4 18.2 8.8 7.1 16.4 28 8.8 3.0 9.1 17.0 15.1 21.4 21.9 23.7 17.5 7.1 2.5 7.4 29 7.8 0.0 5.0 16.6 18.8 22.7 17.5 23.9 14.6 12.7 2.5 2.5 30 6.5 0.0 1.4 16.9 20.4 22.2 15.2 24.0 13.5 18.1 4.0 1.7 31 8.5 0.0 4.9 0.0 21.7 0.0 14.2 23.4 0.0 22.0 0.0 3.8 ----------------------------------------------------------------------------------------- Max 10.6 16.5 17.9 20.5 24.5 24.4 24.5 25.5 23.5 22.0 20.4 17.9 Min -5.3 -5.7 0.2 2.8 15.1 17.4 14.2 19.4 13.5 7.1 -1.4 -1.7 Mean 3.1 4.8 9.0 14.4 20.0 20.9 21.8 23.2 19.3 15.6 10.9 5.4 -----------------------------------------------------------------------------------------