MONTHLY CLIMATOLOGICAL SUMMARY for DEC. 2021 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 41.9 51.5 1:50p 28.8 12:05a 23.1 0.0 0.01 3.4 18.0 1:30p WSW 2 47.7 53.4 1:50p 38.8 5:45p 17.3 0.0 0.00 7.2 25.0 9:55a NW 3 38.6 48.2 2:10p 23.1 11:20p 26.4 0.0 0.00 2.4 14.0 6:25p E 4 33.3 40.0 2:35p 25.7 12:05a 31.7 0.0 0.01 3.0 14.0 1:55p NW 5 33.9 37.1 8:20a 32.4 4:30a 31.1 0.0 0.21 3.9 20.0 10:30a ESE 6 23.8 33.8 12:30a 8.7 11:55p 41.2 0.0 0.00 13.9 35.0 2:20a WNW 7 15.4 22.6 12:00m 6.7 3:40a 49.6 0.0 0.00 2.3 14.0 7:15p S 8 24.4 30.5 1:25p 14.5 8:00a 40.6 0.0 0.00 2.4 16.0 10:15a SE 9 32.8 42.3 3:25p 21.2 12:05a 32.2 0.0 0.00 2.6 21.0 8:55a SE 10 37.3 43.1 1:00p 30.1 12:20a 27.7 0.0 0.50 5.2 25.0 3:15p ESE 11 34.7 43.6 3:45a 28.2 11:10p 30.3 0.0 0.01 9.7 34.0 9:35a W 12 37.5 47.2 1:50p 27.9 12:55a 27.5 0.0 0.00 4.8 22.0 2:30p SW 13 36.4 47.7 2:45p 25.3 11:50p 28.6 0.0 0.00 2.0 14.0 10:25a WSW 14 38.8 49.7 2:15p 23.9 5:30a 26.2 0.0 0.00 2.9 20.0 2:15p SSE 15 60.3 68.1 2:30p 49.2 12:05a 5.1 0.5 0.00 9.3 47.0 11:00p S 16 36.9 64.2 12:05a 26.9 11:50p 28.1 0.0 0.01 12.4 38.0 1:25a W 17 28.0 36.2 2:10p 16.7 7:40a 37.0 0.0 0.00 4.0 18.0 11:30p ENE 18 29.8 34.6 1:55p 25.2 11:55p 35.2 0.0 0.00 8.2 19.0 9:35a NNE 19 27.3 34.5 2:40p 20.4 2:50a 37.7 0.0 0.00 3.8 22.0 10:05p SSW 20 30.5 38.6 2:30p 18.5 12:00m 34.5 0.0 0.00 4.3 20.0 3:35a W 21 25.5 36.2 1:15p 14.4 7:10a 39.5 0.0 0.00 7.3 30.0 5:20p NW 22 21.0 27.9 3:25p 14.3 7:55a 44.0 0.0 0.00 3.9 19.0 1:00a NW 23 31.1 44.6 2:20p 20.5 12:35a 33.9 0.0 0.00 1.9 14.0 10:35a W 24 40.4 49.9 3:30p 21.5 12:30a 24.6 0.0 0.00 2.2 14.0 1:15p S 25 37.7 46.0 2:25p 21.4 12:00m 27.3 0.0 0.00 5.2 17.0 10:25a NNE 26 29.6 42.8 1:35p 15.7 7:00a 35.4 0.0 0.13 4.4 27.0 7:30p ESE 27 34.3 39.4 1:55p 27.3 11:45p 30.7 0.0 0.44 6.0 28.0 2:50a W 28 30.1 33.8 10:25p 25.4 5:20a 34.9 0.0 0.08 3.0 15.0 4:50a ESE 29 25.3 34.0 1:35a 18.1 9:00a 39.7 0.0 0.02 4.9 20.0 1:55a NW 30 26.4 31.8 11:00p 19.8 6:05a 38.6 0.0 0.00 3.1 11.0 3:40a ENE 31 30.8 32.3 1:15p 28.1 11:40p 34.2 0.0 0.01 3.3 13.0 9:05a ENE ------------------------------------------------------------------------------------- 33.0 68.1 15 6.7 7 993.9 0.5 1.43 4.9 47.0 15 W Max >= 90.0: 0 Max <= 32.0: 4 Min <= 32.0: 28 Min <= 0.0: 0 Max Rain: 0.50 ON 12/10/21 Days of Rain: 6 (>.01 in) 4 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration