MONTHLY CLIMATOLOGICAL SUMMARY for AUG. 2025 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 64.8 77.4 4:40p 52.5 3:30a 4.2 4.0 0.00 1.9 15.0 2:00p ENE 2 65.0 79.6 4:30p 49.4 6:15a 5.1 5.1 0.01 0.7 9.0 1:25p ENE 3 64.8 78.8 2:35p 48.9 6:20a 5.1 4.9 0.00 0.6 8.0 1:10p ENE 4 66.5 81.6 3:55p 52.3 6:00a 3.9 5.3 0.01 0.7 11.0 2:45p ENE 5 69.7 83.5 3:15p 55.9 6:30a 2.5 7.2 0.00 0.8 12.0 11:55a E 6 70.7 83.6 3:50p 54.8 6:20a 2.6 8.3 0.00 1.4 14.0 12:05p SSE 7 76.6 88.8 5:00p 63.1 5:10a 0.1 11.7 0.00 1.5 13.0 5:00p S 8 78.8 89.6 2:25p 66.0 5:35a 0.0 13.8 0.00 3.5 20.0 2:00p SSE 9 81.1 90.1 3:45p 73.1 6:15a 0.0 16.1 0.00 3.4 21.0 10:35a S 10 74.7 80.4 5:40p 69.5 11:45a 0.0 9.7 2.66 2.6 20.0 10:10p SSE 11 75.6 84.6 4:20p 70.6 6:00a 0.0 10.6 0.01 1.8 10.0 6:00a W 12 73.8 83.0 3:55p 66.7 11:55p 0.0 8.8 0.81 1.5 27.0 4:15a W 13 70.8 81.1 5:05p 60.0 6:15a 0.7 6.5 0.01 1.6 12.0 12:25p NNW 14 70.3 83.7 4:30p 56.5 6:05a 2.1 7.4 0.01 0.9 11.0 3:10p E 15 75.4 89.2 4:40p 61.9 5:50a 0.4 10.9 0.00 0.9 10.0 4:40p SSE 16 76.4 89.5 2:25p 68.3 6:45a 0.0 11.4 0.01 2.3 26.0 2:40p W 17 75.0 85.3 3:55p 69.7 6:40a 0.0 10.0 0.05 1.9 14.0 12:35a ENE 18 73.6 86.3 4:15p 67.2 3:55a 0.0 8.6 2.51 2.2 19.0 12:30p SE 19 72.2 80.7 5:00p 67.6 7:25a 0.0 7.2 0.00 3.2 14.0 7:00a NNE 20 71.1 79.4 3:00p 62.5 12:00m 0.1 6.1 0.01 2.0 17.0 3:40p ENE 21 67.6 79.3 4:10p 58.2 3:10a 1.6 4.2 0.00 1.1 10.0 11:00a ENE 22 68.5 81.6 3:45p 55.6 6:20a 2.4 5.9 0.01 1.0 8.0 10:50a W 23 68.6 76.1 10:40a 55.5 11:45p 1.1 4.6 0.00 4.1 20.0 1:25p NW 24 61.5 71.3 3:35p 53.3 2:25a 4.8 1.3 0.00 4.8 24.0 3:30p NW 25 57.9 68.8 5:10p 48.3 12:00m 7.5 0.4 0.00 3.4 21.0 11:20a NNW 26 58.2 72.2 3:25p 43.1 6:10a 8.8 2.0 0.01 2.1 17.0 12:55p NNW 27 60.5 73.6 12:25p 45.0 6:35a 6.8 2.3 0.00 1.6 13.0 1:05p W 28 66.3 77.5 3:10p 57.2 7:00a 2.6 3.9 0.11 1.6 11.0 11:30a ENE 29 60.8 73.8 2:00p 48.8 5:45a 5.7 1.5 0.01 0.9 14.0 4:40p SE 30 63.7 76.1 3:00p 51.7 4:40a 4.5 3.3 0.01 0.9 11.0 11:00a E 31 62.8 77.7 5:15p 48.6 6:40a 5.7 3.5 0.00 0.8 11.0 12:05p ENE ------------------------------------------------------------------------------------- 69.1 90.1 9 43.1 26 78.3 206.5 6.25 1.9 27.0 12 ENE Max >= 90.0: 1 Max <= 32.0: 0 Min <= 32.0: 0 Min <= 0.0: 0 Max Rain: 2.66 ON 08/10/25 Days of Rain: 5 (>.01 in) 4 (>.1 in) 2 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration