DE SMET, SOUTH DAKOTA

NCDC 1971-2000 Monthly Normals

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual
Monthly
Mean Max. Temperature (F) 22.0 29.0 40.7 56.7 69.3 78.8 83.7 81.6 72.3 59.1 38.9 26.1 54.9
Highest Mean Max. Temperature (F) 36.3 40.6 52.2 67.2 77.2 87.9 91.5 90.7 80.4 67.3 53.5 36.7 91.5
Year Highest Occurred 1990 2000 2000 1987 1987 1988 1976 1976 1978 1974 1999 1979 1976
Lowest Mean Max. Temperature (F) 8.2 16.7 30.9 45.9 61.3 71.6 71.7 74.6 62.6 55.3 25.5 6.4 6.4
Year Lowest Occurred 1979 1989 1984 1975 1997 1993 1992 1992 1993 1995 1985 1983 1983
Mean Temperature (F) 12.1 19.3 30.8 45.3 57.5 67.3 72.1 70.0 60.2 47.2 29.7 16.7 44.0
Highest Mean Temperature (F) 25.8 30.6 39.8 53.1 64.6 74.9 77.6 76.5 66.8 52.0 41.6 26.2 77.6
Year Highest Occurred 1990 1987 2000 1987 1977 1988 1974 1983 1998 1973 1999 1997 1974
Lowest Mean Temperature (F) -2.7 5.3 23.5 38.4 50.7 62.2 63.2 64.9 52.8 42.5 17.7 -1.5 -2.7
Year Lowest Occurred 1979 1979 1984 1995 1997 1985 1992 1985 1993 1976 1985 1983 1979
Mean Min. Temperature (F) 2.1 9.5 20.9 33.8 45.6 55.8 60.5 58.3 48.0 35.3 20.4 7.3 33.1
Highest Mean Min. Temperature (F) 15.3 22.3 29.7 38.9 52.3 62.0 64.2 63.4 54.0 41.0 29.6 18.3 64.2
Year Highest Occurred 1990 1998 1973 1987 1977 1988 1999 1983 1998 2000 1999 1997 1999
Lowest Mean Min. Temperature (F) -13.7 -6.2 14.4 29.3 40.1 50.2 54.6 53.6 41.9 28.5 10.0 -9.3 -13.7
Year Lowest Occurred 1979 1979 1975 1982 1997 1985 1992 1977 1974 1976 1985 1983 1979
Mean Precipitation (in.) 0.62 0.62 1.53 2.21 3.08 3.92 3.55 2.76 2.36 1.68 1.06 0.45 23.84
Highest Precipitation (in.) 2.22 2.40 3.51 7.63 6.54 11.92 8.31 5.85 7.62 4.86 4.16 1.42 11.92
Year Highest Occurred 1975 1977 1985 1986 1991 1984 1987 1984 1985 1984 2000 1972 1984
Lowest Precipitation (in.) 0.00 0.08 0.05 0.25 0.10 1.21 0.13 0.50 0.05 0.00 0.05 0.00 0.00
Year Lowest Occurred 1991 1982 1971 1996 1997 1973 1975 1976 1974 1993 1990 1999 1991
Heating Degree Days (F) 1642. 1280. 1061. 595. 267. 61. 24. 37. 192. 553. 1060. 1497. 8269.
Cooling Degree Days (F) 0. 0. 0. 3. 33. 130. 244. 191. 47. 0. 0. 0. 648.

Western Regional Climate Center, wrcc@dri.edu