MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2010 NAME: Hawkeye Observatory CITY: Durand STATE: Illinois ELEV: 758 ft LAT: 42° 24' 00" N LONG: 89° 18' 00" 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 23.6 25.8 12:31p 21.2 7:12a 41.3 0.0 0.00 10.4 25.0 10:00a W 2 23.7 30.4 2:41p 13.8 11:53p 41.2 0.0 0.00 4.9 14.0 2:59a W 3 20.7 26.3 2:00p 11.5 3:12a 44.2 0.0 0.00 1.5 10.0 9:25p ENE 4 26.5 30.2 1:43p 22.6 8:35p 38.4 0.0 0.01 6.7 20.0 2:34p N 5 17.0 24.7 12:04a 3.2 11:25p 47.9 0.0 0.00 6.5 18.0 9:56a NW 6 11.8 18.7 2:03p 2.3 6:46a 53.1 0.0 0.00 6.2 18.0 11:01a WNW 7 12.2 18.6 1:38p 2.7 11:27p 52.8 0.0 0.00 4.6 15.0 10:21a NW 8 7.9 19.9 1:28p -5.2 11:05p 56.8 0.0 0.00 2.3 10.0 3:40p W 9 16.5 30.8 11:58p -5.6 1:10a 48.3 0.0 0.00 3.4 20.0 3:35p SSE 10 24.5 31.3 12:19a 15.4 8:36p 40.4 0.0 0.01 3.2 14.0 10:49a WSW 11 30.8 36.4 10:59a 22.5 12:01a 34.2 0.0 0.01 3.2 18.0 12:17p ENE 12 20.1 30.6 12:17a 9.7 11:57p 44.8 0.0 0.00 17.9 36.0 1:01p NNW 13 4.4 11.2 1:44p -5.2 10:43p 60.4 0.0 0.00 6.0 21.0 12:27a NW 14 0.7 12.5 1:50p -10.6 11:35p 63.8 0.0 0.00 1.4 7.0 2:22a NW 15 6.4 19.9 3:10p -11.3 1:35a 58.6 0.0 0.00 1.5 9.0 3:55p ENE 16 18.8 21.4 1:15p 12.5 12:00m 46.2 0.0 0.00 3.9 12.0 4:55a NE 17 12.5 18.0 2:30p 7.4 7:55a 52.5 0.0 0.00 4.3 16.0 1:45p WSW 18 12.7 17.5 3:00p 7.3 1:35a 52.3 0.0 0.00 4.8 15.0 11:45a WSW 19 10.1 16.6 2:40p -2.1 11:20p 54.9 0.0 0.00 2.8 12.0 3:00p W 20 18.4 27.8 11:50p -1.0 12:05a 46.6 0.0 0.00 3.4 16.0 12:00p ESE 21 29.0 33.0 7:05p 16.0 11:40p 36.0 0.0 0.01 3.3 19.0 8:30p ESE 22 24.1 33.7 2:10p 11.3 11:35p 40.9 0.0 0.00 7.0 20.0 4:40a NNW 23 15.1 26.3 2:00p 1.7 7:40a 49.9 0.0 0.00 0.8 7.0 11:25a NW 24 25.5 28.4 11:20a 21.5 12:05a 39.5 0.0 0.00 2.4 8.0 12:00m N 25 27.3 29.7 11:55a 22.0 4:20a 37.7 0.0 0.00 9.6 23.0 1:30p N 26 23.2 27.9 12:05a 13.6 7:10a 41.8 0.0 0.00 8.7 21.0 12:20a N 27 15.7 21.8 12:05a 7.2 6:45p 49.3 0.0 0.00 3.2 12.0 12:10p SSW 28 16.6 26.7 2:05p 6.2 12:00m 48.4 0.0 0.00 1.8 11.0 11:15a SSW 29 21.9 35.5 12:00m 2.1 2:25a 43.1 0.0 0.01 2.5 15.0 5:30p SE 30 38.9 46.5 11:05p 35.4 12:05a 26.1 0.0 0.01 6.4 23.0 11:00p SSE 31 43.2 50.3 7:55p 34.5 12:00m 21.8 0.0 0.04 4.1 26.0 8:50p S ------------------------------------------------------------------------------------- 19.3 50.3 31 -11.3 15 1413.2 0.0 0.10 4.8 36.0 12 W Max >= 90.0: 0 Max <= 32.0: 25 Min <= 32.0: 29 Min <= 0.0: 7 Max Rain: 0.04 ON 12/31/10 Days of Rain: 1 (>.01 in) 0 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration