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 68.4 41.8 56.4 0.0 213 44 83.5 17 25.8 7 0 0 5 0 26 6 26 7 26 8 26 9 26 10 26 11 26 12 ------------------------------------------------------------------------------------ 49.4 26.7 38.5 0.0 3821 96 83.5 MAY -16.5 JAN 0 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 0.57 0.00 0.22 16 5 3 0 26 6 26 7 26 8 26 9 26 10 26 11 26 12 --------------------------------------------- 13.27 0.00 2.70 APR 38 20 3 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 4.6 36.0 9 NW 26 6 26 7 26 8 26 9 26 10 26 11 26 12 --------------------------------- 5.3 47.0 MAR NW