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 ------------------------------------------------------------------------------------ 20 1 33.5 20.4 27.2 0.0 1170 0 50.3 9 -2.5 21 0 11 28 1 20 2 32.9 13.9 24.7 0.0 1169 0 48.8 23 -18.1 14 0 11 28 5 20 3 47.9 31.4 39.2 0.0 799 0 64.6 8 21.7 7 0 0 18 0 20 4 56.7 35.0 46.0 0.0 574 3 77.2 7 21.5 16 0 0 12 0 20 5 67.5 47.6 57.7 0.0 282 56 86.5 26 24.8 9 0 0 2 0 20 6 83.0 58.9 71.2 0.0 53 240 92.3 2 43.6 15 2 0 0 0 20 7 85.0 63.1 74.4 0.0 14 307 92.7 26 53.8 23 5 0 0 0 20 8 82.2 56.9 69.7 0.0 74 219 92.7 27 46.7 5 5 0 0 0 20 9 71.3 48.8 60.1 0.0 218 71 82.0 2 34.3 19 0 0 0 0 20 10 58.2 35.1 46.6 0.0 588 17 81.7 9 23.6 30 0 0 13 0 20 11 54.0 31.7 43.0 0.0 672 12 75.1 9 16.6 30 0 0 18 0 20 12 35.9 18.8 27.7 0.0 1157 0 58.0 23 5.6 29 0 9 31 0 ------------------------------------------------------------------------------------ 59.1 38.6 49.0 0.0 6771 924 92.7 JUL -18.1 FEB 12 31 150 6 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 20 1 1.16 0.00 0.45 10 8 3 0 20 2 0.80 0.00 0.32 17 7 2 0 20 3 3.18 0.00 1.03 9 11 7 1 20 4 2.91 0.00 0.60 7 13 7 0 20 5 4.55 0.00 1.18 17 12 10 1 20 6 3.44 0.00 1.40 29 7 4 2 20 7 4.24 0.00 1.34 15 8 6 2 20 8 2.39 0.00 1.92 10 4 2 1 20 9 4.69 0.00 1.88 8 11 8 1 20 10 2.02 0.00 0.94 22 9 5 0 20 11 1.69 0.00 0.56 24 8 4 0 20 12 0.86 0.00 0.65 11 2 2 0 --------------------------------------------- 31.93 0.00 1.92 AUG 100 60 8 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 20 1 4.6 36.0 18 WNW 20 2 5.6 35.0 13 WNW 20 3 5.9 36.0 29 SSW 20 4 6.5 41.0 29 NW 20 5 5.3 35.0 8 E 20 6 3.6 33.0 2 W 20 7 2.9 42.0 7 W 20 8 2.7 36.0 10 SSW 20 9 3.8 31.0 30 W 20 10 4.9 38.0 17 W 20 11 5.6 41.0 10 SW 20 12 5.0 32.0 12 WNW --------------------------------- 4.7 42.0 JUL W