MONTHLY CLIMATOLOGICAL SUMMARY for SEP. 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 65.4 78.2 4:25p 52.2 12:00m 3.8 4.2 0.00 3.3 15.0 2:25p NE 2 63.4 79.1 1:40p 46.3 5:30a 6.2 4.6 0.01 1.0 11.0 2:10p ESE 3 63.7 70.1 4:25p 55.3 4:30a 2.6 1.3 0.07 2.0 15.0 2:45p SE 4 65.9 73.7 1:55p 53.0 12:00m 1.5 2.4 0.06 2.5 14.0 1:55p NNW 5 66.9 81.4 4:15p 48.9 6:55a 3.9 5.8 0.00 3.5 22.0 2:05p W 6 65.2 82.6 4:05p 48.2 6:45a 5.2 5.4 0.00 1.2 16.0 12:15p W 7 67.5 82.0 2:25p 52.7 1:00a 3.6 6.1 0.00 4.1 23.0 10:35a W 8 63.4 75.5 3:10p 52.8 12:05a 4.6 3.0 0.00 4.8 24.0 12:35p NNW 9 60.5 76.2 4:40p 45.7 6:35a 7.3 2.8 0.00 2.0 14.0 1:50p WNW 10 63.8 81.1 4:30p 46.1 6:50a 6.5 5.3 0.00 1.5 14.0 3:10p SSW 11 68.4 87.2 5:05p 49.6 6:35a 4.6 8.0 0.00 1.6 15.0 2:20p W 12 72.9 85.7 2:10p 65.7 11:55p 0.0 7.9 0.00 3.3 17.0 4:50p W 13 71.5 87.8 4:15p 63.1 6:30a 0.3 6.9 0.00 2.7 14.0 5:00p ENE 14 71.0 81.5 11:45a 58.0 10:20p 1.0 6.9 0.00 5.1 20.0 12:05p NNW 15 61.2 78.4 5:25p 46.1 7:15a 7.8 3.9 0.00 1.7 15.0 12:35p NNW 16 63.1 83.8 4:25p 42.6 6:10a 8.1 6.2 0.00 2.4 17.0 12:25p S 17 66.7 86.5 3:25p 45.9 6:55a 5.9 7.6 0.00 3.4 19.0 1:20p S 18 66.8 84.4 3:55p 49.1 5:45a 4.4 6.2 0.00 2.0 13.0 10:55a NNE 19 71.4 91.2 4:05p 50.5 5:45a 4.2 10.6 0.00 1.8 14.0 1:50p SSE 20 73.9 85.3 3:50p 62.0 4:15a 0.2 9.1 0.22 4.3 25.0 11:25p S 21 62.5 70.4 4:05p 54.4 12:00m 3.2 0.7 0.11 5.7 22.0 10:15a NW 22 55.7 66.5 4:15p 43.4 11:20p 9.4 0.1 0.00 7.0 29.0 1:20p NNE 23 55.1 69.5 4:45p 41.8 6:50a 10.6 0.7 0.00 5.6 26.0 2:45p NNW 24 59.1 81.8 3:20p 39.4 6:45a 9.4 3.5 0.19 4.3 31.0 2:50p W 25 56.5 68.4 3:10p 43.7 6:20a 9.1 0.6 0.00 3.6 25.0 2:35p W 26 68.3 83.6 4:25p 52.3 7:15a 3.7 7.0 0.00 3.8 22.0 2:05p W 27 69.9 88.8 3:50p 52.2 7:20a 2.6 7.5 0.00 2.7 18.0 6:25p W 28 61.0 81.1 4:05p 41.4 7:15a 8.2 4.3 0.00 1.7 13.0 11:00a SE 29 63.5 87.1 3:40p 42.4 6:55a 8.1 6.5 0.00 1.2 13.0 3:00p E 30 66.8 87.7 2:55p 48.1 6:25a 5.5 7.2 0.00 1.1 13.0 5:35p E ------------------------------------------------------------------------------------- 65.0 91.2 19 39.4 24 151.5 152.3 0.66 3.0 31.0 24 W Max >= 90.0: 1 Max <= 32.0: 0 Min <= 32.0: 0 Min <= 0.0: 0 Max Rain: 0.22 ON 09/20/21 Days of Rain: 5 (>.01 in) 3 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration