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 ------------------------------------------------------------------------------------ 24 1 28.1 18.2 23.8 0.0 1276 0 40.7 31 -14.9 21 0 12 23 8 24 2 47.8 24.2 35.5 0.0 857 2 75.0 27 10.1 29 0 2 25 0 24 3 51.7 31.4 41.3 0.0 736 4 74.6 3 21.1 23 0 0 18 0 24 4 60.7 39.8 50.7 0.0 452 21 82.0 14 26.1 21 0 0 6 0 24 5 75.5 50.4 63.3 0.0 153 100 88.6 21 39.5 4 0 0 0 0 24 6 81.1 61.4 71.2 0.0 43 227 91.8 17 46.0 11 4 0 0 0 24 7 82.4 60.2 70.9 0.0 38 222 91.7 31 47.4 1 1 0 0 0 24 8 81.6 59.1 70.1 0.0 70 229 97.1 27 45.4 22 2 0 0 0 24 9 79.6 49.5 64.5 0.0 158 142 90.0 21 37.7 8 1 0 0 0 24 10 69.4 38.6 54.1 0.0 390 51 84.9 5 23.3 17 0 0 8 0 24 11 49.9 34.0 42.5 0.0 675 0 67.0 4 11.8 30 0 3 13 0 24 12 35.9 20.3 29.0 0.0 1116 0 54.6 8 -5.1 21 0 12 25 1 ------------------------------------------------------------------------------------ 62.0 40.6 51.4 0.0 5963 998 97.1 AUG -14.9 JAN 8 29 118 9 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 24 1 1.20 0.00 0.33 23 11 3 0 24 2 0.49 0.00 0.35 15 5 1 0 24 3 5.32 0.00 1.41 4 10 9 2 24 4 4.25 0.00 1.59 2 9 8 1 24 5 3.86 0.00 1.60 24 10 4 2 24 6 8.05 0.00 3.05 22 15 11 2 24 7 1.50 0.00 0.65 23 8 3 0 24 8 3.14 0.00 1.65 30 6 4 1 24 9 1.22 0.00 0.72 20 3 3 0 24 10 0.54 0.00 0.24 25 4 2 0 24 11 3.01 0.00 0.81 21 11 7 0 24 12 0.88 0.00 0.45 27 6 2 0 --------------------------------------------- 33.46 0.00 3.05 JUN 98 57 8 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 24 1 4.7 39.0 9 W 24 2 4.9 31.0 28 NW 24 3 6.7 37.0 4 ESE 24 4 6.7 46.0 16 NW 24 5 4.3 31.0 7 W 24 6 4.0 36.0 6 SSW 24 7 2.1 41.0 15 W 24 8 2.7 34.0 6 W 24 9 2.5 28.0 21 NNE 24 10 4.2 35.0 31 SSW 24 11 5.7 37.0 18 WNW 24 12 5.0 48.0 4 NW --------------------------------- 4.4 48.0 DEC NW