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 ------------------------------------------------------------------------------------ 18 1 29.1 11.4 21.1 0.0 1361 0 53.5 11 -18.7 6 0 18 30 9 18 2 33.7 12.0 23.7 0.0 1155 0 60.4 27 -13.7 12 0 10 24 7 18 3 45.0 24.1 34.6 0.0 941 0 56.8 18 13.8 9 0 2 29 0 18 4 50.3 27.4 39.6 0.0 772 9 81.5 30 12.3 8 0 0 23 0 18 5 78.0 53.8 65.8 0.0 143 167 96.9 27 40.8 11 4 0 0 0 18 6 80.3 60.5 70.5 0.0 38 204 92.4 17 46.3 4 5 0 0 0 18 7 82.6 59.0 71.3 0.0 49 244 91.1 4 48.4 7 2 0 0 0 18 8 82.2 61.1 71.4 0.0 33 232 89.9 26 48.9 23 0 0 0 0 18 9 77.2 53.4 64.7 0.0 147 139 90.5 17 32.7 29 2 0 0 0 18 10 58.4 39.1 48.9 0.0 529 30 86.5 3 20.2 21 0 0 11 0 18 11 40.5 27.6 33.6 0.0 453 0 52.1 4 12.6 14 0 3 8 0 18 12 ------------------------------------------------------------------------------------ 60.9 39.8 50.5 0.0 5621 1024 96.9 MAY -18.7 JAN 13 33 125 16 PRECIPITATION (in) DEP. MAX DAYS OF RAIN FROM OBS. OVER YR MO TOTAL NORM DAY DATE .01 .1 1 --------------------------------------------- 18 1 1.30 0.00 0.86 22 7 2 0 18 2 2.45 0.00 1.11 20 9 4 1 18 3 1.03 0.00 0.38 6 4 4 0 18 4 1.32 0.00 0.31 11 11 4 0 18 5 4.26 0.00 0.84 30 15 10 0 18 6 7.68 0.00 2.85 18 10 8 2 18 7 4.02 0.00 0.99 19 8 7 0 18 8 5.23 0.00 1.06 6 12 9 2 18 9 7.72 0.00 2.94 2 12 10 2 18 10 5.05 0.00 2.28 6 12 6 1 18 11 0.87 0.00 0.42 5 5 2 0 18 12 --------------------------------------------- 40.93 0.00 2.94 SEP 105 66 8 WIND SPEED (mph) DOM YR MO AVG. HI DATE DIR --------------------------------- 18 1 5.1 31.0 26 W 18 2 4.9 36.0 25 W 18 3 5.5 32.0 31 E 18 4 6.1 46.0 14 ENE 18 5 3.3 33.0 4 ENE 18 6 2.6 43.0 26 ENE 18 7 2.2 43.0 13 SSW 18 8 1.6 32.0 5 SSW 18 9 2.1 27.0 8 ENE 18 10 3.8 49.0 20 W 18 11 4.9 30.0 4 W 18 12 --------------------------------- 3.8 49.0 OCT ENE