December, 1997 Preliminary Local Climatological Data Sioux Falls, SD National Weather Service |-Temperature-|--------Degree Days---------|-Precipitation-|-Snowfall-|----Wind----| (degrees F) (base 65 degrees F) (inches) (inches) (mph, deg) Heating Cooling Max Min Avg Dep HDD Seas Dep CDD Seas Dep Tot Tot Norm Tot Tot Avg Pk Dir from for for for for for Spd Gust at Norm Seas Seas Mon Mon Seas Pk Date | | | | | | | | | | | | | | | | | | 1 31 27 29 5 36 1814 108 0 619 -125 0 0 0.03 0.0 5.4 11.8 M M 2 34 28 31 7 34 1848 101 0 619 -125 T T 0.06 T 5.4 7.7 M M 3 29 21 25 2 40 1888 99 0 619 -125 T 0 0.09 T 5.4 10.4 M M 4 29 14 22 -1 43 1931 100 0 619 -125 0.07 0.07 0.12 0.7 6.1 15.6 M M 5 23 13 18 -4 47 1978 104 0 619 -125 0.01 0.08 0.15 0.1 6.2 17.1 M M 6 26 20 23 1 42 2020 103 0 619 -125 0 0.08 0.18 0.0 6.2 9.6 M M 7 29 19 24 3 41 2061 100 0 619 -125 T 0.08 0.21 T 6.2 7.0 M M 8 28 23 26 5 39 2100 95 0 619 -125 0.02 0.10 0.24 0.4 6.6 10.5 M M 9 29 26 28 7 37 2137 88 0 619 -125 0.04 0.14 0.26 0.7 7.3 10.6 M M 10 27 19 23 3 42 2179 85 0 619 -125 T 0.14 0.28 0.1 7.4 10.6 M M 11 28 6 17 -3 48 2227 88 0 619 -125 0 0.14 0.30 0.0 7.4 8.2 M M 14 47 17 32 13 33 2340 63 0 619 -125 0 0.14 0.36 0.0 7.4 6.2 M M 15 52 28 40 22 25 2365 41 0 619 -125 0 0.14 0.38 0.0 7.4 6.9 M M 16 45 27 36 18 29 2394 23 0 619 -125 0 0.14 0.40 0.0 7.4 7.4 M M 17 41 25 33 16 32 2426 7 0 619 -125 0 0.14 0.42 0.0 7.4 6.6 M M 18 50 25 38 21 27 2453 -14 0 619 -125 0 0.14 0.44 0.0 7.4 2.3 M M 19 38 19 29 12 36 2489 -26 0 619 -125 T 0.14 0.46 T 7.4 9.2 M M 20 34 11 23 6 42 2531 -32 0 619 -125 0 0.14 0.48 0.0 7.4 8.1 M M 21 30 18 24 8 41 2572 -40 0 619 -125 0 0.14 0.50 0.0 7.4 11.4 M M 22 31 16 24 8 41 2613 -48 0 619 -125 0.07 0.21 0.52 0.9 8.3 4.3 M M 23 29 7 18 2 47 2660 -50 0 619 -125 0 0.21 0.54 0.0 8.3 5.2 M M 24 31 22 27 12 38 2698 -62 0 619 -125 T 0.21 0.56 T 8.3 6.7 M M 25 32 22 27 12 38 2736 -74 0 619 -125 0 0.21 0.58 0.0 8.3 10.7 M M 26 35 13 24 9 41 2777 -83 0 619 -125 T 0.21 0.60 T 8.3 9.2 M M 27 36 12 24 9 41 2818 -92 0 619 -125 0 0.21 0.62 0.0 8.3 7.1 M M 28 34 18 26 11 39 2857 -103 0 619 -125 T 0.21 0.64 T 8.3 16.5 M M 29 33 16 25 11 40 2897 -114 0 619 -125 0.02 0.23 0.66 0.3 8.6 7.4 M M 30 36 22 29 15 36 2933 -129 0 619 -125 0.01 0.24 0.68 0.1 8.7 15.1 M M 31 32 4 18 4 47 2980 -133 0 619 -125 0 0.24 0.70 0.0 8.7 11.1 M M