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 85.7 64.3 74.9 0.0 20 326 92.8 19 52.1 31 7 0 0 0 19 8 79.7 56.4 68.0 0.0 77 170 88.1 5 47.8 24 0 0 0 0 19 9 75.6 57.7 66.7 0.0 68 118 85.4 30 46.1 5 0 0 0 0 19 10 57.9 38.3 47.7 0.0 552 14 81.5 1 17.8 31 0 0 8 0 19 11 39.2 23.1 31.5 0.0 1006 0 54.6 21 0.2 12 0 6 25 0 19 12 39.8 22.0 31.1 0.0 1051 0 56.1 25 5.4 18 0 8 28 0 ------------------------------------------------------------------------------------ 56.7 37.4 47.2 0.0 7336 837 92.8 JUL -37.5 JAN 8 61 151 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 3.37 0.00 1.21 18 8 6 1 19 8 4.67 0.00 1.49 11 11 8 1 19 9 9.82 0.00 1.75 12 16 13 6 19 10 4.81 0.00 1.31 1 13 8 2 19 11 2.29 0.00 0.54 21 13 6 0 19 12 1.47 0.00 0.59 28 6 3 0 --------------------------------------------- 42.02 0.00 1.75 SEP 127 80 10 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 1.9 37.0 20 SSW 19 8 1.3 32.0 11 W 19 9 1.7 30.0 10 SSW 19 10 3.3 33.0 21 W 19 11 4.2 39.0 27 W 19 12 4.8 31.0 6 WNW --------------------------------- 3.7 44.0 FEB W