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 ------------------------------------------------------------------------------------ 14 1 21.9 1.0 12.1 0.0 1639 0 40.5 12 -23.7 3 0 22 31 15 14 2 22.0 0.9 12.5 0.0 1469 0 45.1 18 -23.5 11 0 23 27 14 14 3 38.5 18.6 29.0 0.0 1113 0 63.9 31 -16.2 3 0 9 24 3 14 4 58.6 35.3 46.8 0.0 554 10 80.8 20 21.3 15 0 0 13 0 14 5 72.4 48.1 60.6 0.0 242 104 89.7 31 36.8 17 0 0 0 0 14 6 80.4 60.0 70.4 0.0 43 205 88.0 1 47.2 9 0 0 0 0 14 7 78.2 56.2 68.0 0.0 79 174 90.1 22 45.5 16 1 0 0 0 14 8 81.6 58.2 69.8 0.0 58 207 88.7 24 42.3 15 0 0 0 0 14 9 73.4 47.5 60.1 0.0 243 96 84.4 4 33.3 14 0 0 0 0 14 10 60.9 38.8 49.9 0.0 477 8 77.6 27 26.1 22 0 0 10 0 14 11 39.6 21.4 31.3 0.0 1012 0 63.3 3 0.1 21 0 12 22 0 14 12 35.2 24.0 30.1 0.0 1083 0 48.7 26 0.7 31 0 10 24 0 ------------------------------------------------------------------------------------ 55.4 34.4 45.2 0.0 8011 804 90.1 JUL -23.7 JAN 1 76 151 32 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 14 1 0.72 0.00 0.48 10 5 1 0 14 2 1.06 0.00 0.80 20 3 2 0 14 3 1.14 0.00 0.58 27 8 3 0 14 4 3.82 0.00 1.35 13 13 6 1 14 5 3.47 0.00 1.48 27 12 7 2 14 6 10.42 0.00 3.56 30 15 12 3 14 7 0.71 0.00 0.29 12 5 2 0 14 8 5.92 0.00 2.39 21 9 6 2 14 9 2.42 0.00 1.08 10 9 4 1 14 10 3.48 0.00 1.48 13 7 4 2 14 11 1.84 0.00 0.86 23 9 5 0 14 12 1.04 0.00 0.29 23 6 4 0 --------------------------------------------- 36.04 0.00 3.56 JUN 101 56 11 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 14 1 7.5 35.0 14 W 14 2 5.6 39.0 21 W 14 3 6.1 38.0 31 ENE 14 4 6.6 37.0 14 SSW 14 5 4.9 33.0 12 W 14 6 3.9 45.0 30 SSW 14 7 3.5 29.0 27 SSW 14 8 2.3 25.0 26 SSW 14 9 2.9 27.0 10 SSW 14 10 4.7 38.0 31 W 14 11 5.9 34.0 19 W 14 12 4.8 30.0 27 W --------------------------------- 4.9 45.0 JUN W