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 ------------------------------------------------------------------------------------ 19 1 24.8 8.5 17.6 0.0 1465 0 50.5 7 -37.5 31 0 22 30 9 19 2 29.2 12.3 22.1 0.0 1202 0 44.8 4 -6.3 19 0 19 27 3 19 3 41.7 22.8 32.5 0.0 1005 0 62.9 14 -5.9 4 0 6 26 2 19 4 58.9 36.4 47.5 0.0 538 14 79.9 22 20.6 28 0 0 7 0 19 5 67.4 47.0 57.3 0.0 287 48 82.5 31 33.2 4 0 0 0 0 19 6 78.4 57.9 68.0 0.0 65 147 90.3 29 45.4 14 1 0 0 0 19 7 87.0 65.9 76.0 0.0 7 250 92.8 19 55.4 12 7 0 0 0 19 8 19 9 19 10 19 11 19 12 ------------------------------------------------------------------------------------ 54.2 34.7 44.7 0.0 4570 459 92.8 JUL -37.5 JAN 8 47 90 14 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 19 1 0.96 0.00 0.77 7 4 2 0 19 2 2.28 0.00 0.90 23 10 3 0 19 3 1.84 0.00 0.84 13 6 4 0 19 4 3.34 0.00 0.76 29 10 8 0 19 5 3.88 0.00 0.65 8 17 10 0 19 6 3.29 0.00 0.55 5 13 9 0 19 7 3.12 0.00 1.21 18 7 5 1 19 8 19 9 19 10 19 11 19 12 --------------------------------------------- 18.71 0.00 1.21 JUL 67 41 1 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 19 1 5.4 37.0 8 W 19 2 4.7 44.0 24 W 19 3 5.3 31.0 9 W 19 4 5.4 33.0 19 E 19 5 3.7 39.0 16 ENE 19 6 2.7 43.0 30 SSW 19 7 2.1 37.0 20 SSW 19 8 19 9 19 10 19 11 19 12 --------------------------------- 4.3 44.0 FEB W