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 ------------------------------------------------------------------------------------ 25 1 29.2 9.0 20.1 0.0 1392 0 54.4 30 -18.1 24 0 20 31 6 25 2 31.3 12.7 22.8 0.0 1183 0 55.8 28 -16.8 14 0 15 26 7 25 3 53.6 29.5 41.8 0.0 729 10 78.4 28 10.5 2 0 0 21 0 25 4 59.1 35.4 47.3 0.0 420 10 80.2 24 17.9 8 0 0 9 0 25 5 72.0 46.4 59.7 0.0 198 65 93.0 15 31.6 9 1 0 1 0 25 6 83.5 61.1 72.4 0.0 46 267 93.6 23 44.2 1 7 0 0 0 25 7 84.2 63.6 73.9 0.0 16 293 92.2 23 50.9 18 5 0 0 0 25 8 80.8 58.1 69.1 0.0 78 207 90.1 9 43.1 26 1 0 0 0 25 9 79.7 50.0 64.2 0.0 162 139 89.8 29 36.2 8 0 0 0 0 25 10 67.4 41.4 54.3 0.0 386 53 89.2 3 22.3 24 0 0 8 0 25 11 47.9 27.6 38.8 0.0 786 1 69.3 15 1.6 30 0 4 21 0 25 12 31.1 12.0 23.2 0.0 1297 0 45.3 23 -14.4 4 0 16 28 7 ------------------------------------------------------------------------------------ 60.0 37.2 49.0 0.0 6692 1044 93.6 JUN -18.1 JAN 14 55 145 20 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 25 1 0.10 0.00 0.04 30 3 0 0 25 2 0.21 0.00 0.13 26 4 1 0 25 3 2.92 0.00 0.59 4 11 9 0 25 4 2.68 0.00 1.33 2 10 4 1 25 5 2.58 0.00 1.06 20 5 3 1 25 6 5.40 0.00 2.32 4 9 6 2 25 7 12.83 0.00 4.58 10 14 8 6 25 8 6.25 0.00 2.66 10 5 4 2 25 9 0.27 0.00 0.21 3 1 1 0 25 10 1.83 0.00 0.60 7 8 4 0 25 11 0.79 0.00 0.25 8 7 3 0 25 12 1.50 0.00 0.81 28 7 3 0 --------------------------------------------- 37.36 0.00 4.58 JUL 84 46 12 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 25 1 6.5 30.0 27 WNW 25 2 6.0 41.0 28 WNW 25 3 6.3 43.0 14 NNW 25 4 5.9 37.0 18 ESE 25 5 4.1 40.0 16 E 25 6 2.9 36.0 3 SSW 25 7 2.0 30.0 10 ENE 25 8 1.9 27.0 12 ENE 25 9 1.6 23.0 5 W 25 10 2.8 29.0 19 E 25 11 4.6 38.0 26 NW 25 12 4.8 40.0 28 WNW --------------------------------- 4.1 43.0 MAR WNW