Daily minimum temperature (degrees Celsius) recorded at Grassland Soil and Water Research Center for calendar year 2000. ----------------------------------------------------------------------------------------- Day Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec ----------------------------------------------------------------------------------------- 1 6.9 5.4 12.4 13.5 15.7 21.9 23.2 22.1 26.8 15.2 19.8 5.8 2 17.4 4.4 17.5 12.0 15.1 21.3 22.4 23.0 25.7 17.4 17.4 1.6 3 7.7 3.2 7.5 7.8 15.0 23.6 23.2 23.9 24.0 21.6 17.3 2.5 4 1.1 5.4 4.3 4.5 17.6 21.7 22.9 22.9 24.8 22.5 17.6 3.8 5 -1.6 -.6 7.0 7.5 17.8 20.1 22.1 23.0 27.6 21.1 16.1 5.0 6 3.7 1.3 15.4 14.0 20.9 17.1 21.5 24.3 22.8 15.9 11.2 3.1 7 9.2 11.7 18.4 17.1 21.1 15.4 22.2 23.9 22.4 9.2 7.6 -.3 8 7.3 6.9 16.0 8.9 20.6 18.4 23.3 23.0 21.7 7.8 3.1 3.0 9 5.2 7.1 13.3 5.8 19.6 21.4 22.0 23.9 22.9 6.9 .1 5.4 10 6.3 15.1 9.7 12.9 19.5 21.9 22.8 22.3 22.7 9.5 4.3 10.7 11 7.1 10.4 3.5 14.8 23.3 21.8 24.3 23.5 24.8 12.7 8.3 -2.9 12 14.8 3.3 5.0 12.7 18.6 22.6 23.7 23.5 22.2 16.4 4.0 -5.0 13 8.4 11.5 5.8 11.5 17.8 21.6 22.8 23.8 22.1 13.4 2.5 -2.8 14 6.3 6.1 13.5 10.4 14.0 23.3 25.4 22.1 22.4 16.3 .5 -1.3 15 6.0 8.2 13.9 14.3 14.5 23.1 25.2 23.0 22.5 17.5 3.8 5.3 16 12.1 17.6 5.2 17.3 22.4 23.0 24.5 22.4 18.8 18.3 9.1 1.1 17 13.2 18.4 4.1 15.8 22.0 22.0 21.4 22.9 16.5 17.3 4.2 -2.4 18 12.1 9.7 8.5 18.5 23.3 22.5 22.2 23.8 16.4 17.4 3.5 2.5 19 8.4 2.5 7.9 20.0 16.3 22.4 23.3 22.0 17.2 15.6 4.2 .7 20 4.4 7.0 5.7 17.7 16.5 23.9 23.7 22.0 22.5 16.6 3.3 -.1 21 1.6 8.8 14.9 13.5 18.4 24.3 22.6 23.4 21.6 17.8 2.7 .3 22 12.6 12.8 15.0 9.5 19.1 22.6 23.3 22.5 23.2 20.2 5.6 -1.9 23 9.9 11.7 15.2 19.2 20.6 22.9 24.7 22.4 26.6 19.3 12.4 6.5 24 2.8 17.7 16.6 16.3 22.3 21.7 22.0 22.8 14.6 19.4 9.8 3.6 25 2.7 18.8 18.8 15.0 24.5 23.7 19.9 22.8 11.1 18.9 8.7 2.2 26 3.7 10.6 15.7 17.0 24.1 22.7 23.3 22.4 9.3 19.5 5.4 .1 27 -.2 6.1 16.5 16.8 19.1 24.0 23.1 22.9 12.5 18.9 5.7 -.9 28 -1.4 7.6 14.4 18.4 18.8 22.2 22.5 23.7 14.6 19.8 12.1 .4 29 -2.6 16.0 15.5 15.6 20.9 22.9 22.3 23.7 14.9 16.9 9.7 .8 30 -4.5 .0 9.4 20.5 22.4 21.8 23.3 23.3 15.6 20.4 7.6 -1.6 31 1.7 .0 10.1 .0 21.0 .0 21.5 26.4 .0 20.5 .0 -0.3 ----------------------------------------------------------------------------------------- Max 17.4 18.8 18.8 20.5 24.5 24.3 25.4 26.4 27.6 22.5 19.8 10.7 Min -4.5 -.6 3.5 4.5 14.0 15.4 19.9 22.0 9.3 6.9 .1 -5.0 Mean 5.9 9.1 11.5 14.0 19.4 21.9 22.9 23.1 20.4 16.8 7.9 1.5 -----------------------------------------------------------------------------------------