MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2017 NAME: Hawkeye Observatory CITY: Durand STATE: Illinois ELEV: 758 ft LAT: 42° 26' 20" N LONG: 89° 18' 35" W TEMPERATURE (°F), RAIN (in), WIND SPEED (mph) HEAT COOL AVG MEAN DEG DEG WIND DOM DAY TEMP HIGH TIME LOW TIME DAYS DAYS RAIN SPEED HIGH TIME DIR ------------------------------------------------------------------------------------ 1 34.0 53.2 2:10p 18.6 7:10a 31.0 0.0 0.00 1.4 15.0 11:15a SSW 2 36.6 53.4 2:30p 23.1 12:00m 28.4 0.0 0.00 0.9 9.0 9:30a SSW 3 39.9 58.4 2:45p 20.3 7:05a 25.1 0.0 0.00 2.8 21.0 10:30p SSE 4 56.0 63.2 5:45p 40.5 12:00m 9.0 0.0 0.13 10.5 34.0 11:10p S 5 29.6 40.5 12:05a 23.0 11:20p 35.4 0.0 0.00 13.7 44.0 3:20a W 6 26.5 33.2 2:45p 21.9 12:00m 38.5 0.0 0.00 9.6 27.0 1:55p W 7 20.5 26.6 2:00p 15.9 11:05p 44.5 0.0 0.00 8.3 22.0 1:15p WNW 8 26.1 35.9 2:35p 15.9 12:15a 38.9 0.0 0.00 4.5 15.0 8:30a WSW 9 25.0 32.3 12:10a 14.8 11:10p 40.0 0.0 0.00 9.4 27.0 12:25p NNW 10 24.8 32.6 2:20p 14.0 12:00m 40.2 0.0 0.00 4.6 20.0 2:20p NW 11 28.3 35.3 1:00p 13.1 12:35a 36.7 0.0 0.00 4.9 30.0 11:30p NNW 12 19.9 25.7 12:05a 13.3 6:45a 37.6 0.0 0.00 9.2 26.0 12:20a NW 13 14 15 16 17 18 19 20 21 22 23 16.8 24.9 2:45p 9.9 10:10p 21.9 0.0 0.00 3.4 15.0 1:55p NW 24 17.7 20.7 7:30p 10.3 12:10a 47.3 0.0 0.00 3.9 21.0 9:30p NW 25 9.0 16.0 4:40a -1.9 11:50p 56.0 0.0 0.00 9.2 24.0 9:40a W 26 -0.8 4.7 2:50p -5.8 11:40p 65.8 0.0 0.00 5.7 15.0 1:00p W 27 -3.9 4.6 1:50p -12.9 6:20a 68.9 0.0 0.00 1.8 11.0 11:45a W 28 6.3 10.3 6:15p -2.2 12:05a 58.7 0.0 0.00 3.1 12.0 11:30a S 29 11.6 14.7 11:40a 2.8 7:35a 53.4 0.0 0.00 3.3 13.0 12:00m W 30 1.0 11.4 12:05a -6.7 8:40p 64.0 0.0 0.00 8.6 21.0 5:25a WNW 31 0.1 7.5 1:30p -7.5 11:55p 64.9 0.0 0.00 7.1 16.0 1:10p NW ------------------------------------------------------------------------------------- 20.2 63.2 4 -12.9 27 906.2 0.0 0.13 6.0 44.0 5 W Max >= 90.0: 0 Max <= 32.0: 11 Min <= 32.0: 20 Min <= 0.0: 6 Max Rain: 0.13 ON 12/04/17 Days of Rain: 1 (>.01 in) 1 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration