ANNUAL CLIMATOLOGICAL SUMMARY NAME: Hawkeye Observatory CITY: Durand STATE: Illinois ELEV: 758 ft LAT: 42° 26' 20" N LONG: 89° 18' 35" W TEMPERATURE (°F), HEAT BASE 65.0, COOL BASE 65.0 DEP. HEAT COOL MEAN MEAN FROM DEG DEG MAX MAX MIN MIN YR MO MAX MIN MEAN NORM DAYS DAYS HI DATE LOW DATE >=90 <=32 <=32 <=0 ------------------------------------------------------------------------------------ 26 1 25.9 9.3 18.0 0.0 1456 0 58.2 8 -16.5 23 0 20 29 12 26 2 40.8 16.2 29.1 0.0 1006 0 64.5 27 -5.4 1 0 9 27 3 26 3 53.5 28.6 41.4 0.0 746 14 81.0 30 2.5 17 0 2 19 0 26 4 64.3 41.8 52.9 0.0 401 38 81.4 23 21.9 7 0 0 4 0 26 5 73.3 44.7 60.2 0.0 258 109 89.9 27 25.8 7 0 0 5 0 26 6 79.6 58.1 68.9 0.0 71 189 91.4 29 42.4 3 2 0 0 0 26 7 86.0 64.7 75.2 0.0 6 129 92.5 1 55.4 12 2 0 0 0 26 8 26 9 26 10 26 11 26 12 ------------------------------------------------------------------------------------ 58.2 35.2 47.0 0.0 3944 478 92.5 JUL -16.5 JAN 4 31 84 15 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 26 1 0.52 0.00 0.37 8 4 1 0 26 2 0.36 0.00 0.33 19 2 1 0 26 3 2.60 0.00 0.86 10 9 4 0 26 4 9.22 0.00 2.70 14 18 11 3 26 5 0.62 0.00 0.22 16 7 3 0 26 6 7.45 0.00 1.54 11 13 10 4 26 7 0.79 0.00 0.46 3 2 2 0 26 8 26 9 26 10 26 11 26 12 --------------------------------------------- 21.56 0.00 2.70 APR 55 32 7 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 26 1 5.8 39.0 14 NW 26 2 4.7 38.0 20 WNW 26 3 5.5 47.0 13 SW 26 4 5.6 40.0 14 WNW 26 5 3.9 36.0 9 NW 26 6 2.8 30.0 10 W 26 7 1.6 36.0 3 ENE 26 8 26 9 26 10 26 11 26 12 --------------------------------- 4.5 47.0 MAR NW