MONTHLY CLIMATOLOGICAL SUMMARY for OCT. 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 64.2 82.0 3:00p 48.7 6:55a 5.5 4.6 0.00 1.3 17.0 3:05p SE 2 66.3 86.9 3:40p 49.9 2:50a 4.8 6.2 0.00 1.0 12.0 2:45p SE 3 68.9 89.2 3:05p 51.2 6:50a 4.6 8.4 0.00 1.1 14.0 12:35p W 4 72.0 88.2 3:40p 55.1 4:35a 2.6 9.6 0.00 2.6 24.0 3:00p SSW 5 72.2 83.6 3:20p 59.8 6:40a 0.5 7.7 0.00 3.7 26.0 11:45a SSW 6 67.0 79.6 1:00p 58.0 11:55p 1.6 3.5 0.00 3.2 16.0 2:55p NNE 7 57.5 69.3 3:50p 43.3 12:00m 8.1 0.6 0.60 4.0 18.0 11:35a NNE 8 48.7 65.8 3:40p 36.5 7:20a 16.4 0.0 0.00 1.2 11.0 10:05a ENE 9 47.6 66.3 3:00p 31.5 7:20a 17.4 0.1 0.00 1.0 12.0 3:00p SE 10 55.4 72.1 5:15p 40.1 12:10a 10.3 0.7 0.12 1.6 13.0 12:15p W 11 53.7 70.0 3:50p 37.6 7:40a 12.0 0.7 0.00 1.3 12.0 1:45p ENE 12 55.1 71.1 3:25p 37.2 7:20a 10.7 0.8 0.00 1.9 15.0 2:15p SE 13 60.7 71.8 2:45p 47.8 12:00m 5.3 1.0 0.04 1.3 13.0 1:30a SE 14 56.6 68.6 2:15p 42.0 5:30a 8.9 0.5 0.00 2.3 12.0 8:45p ENE 15 55.6 59.0 2:35p 52.8 4:20a 9.4 0.0 0.01 1.7 13.0 10:05a E 16 60.2 70.6 3:55p 54.4 5:30a 5.6 0.7 0.00 1.7 13.0 11:45a SE 17 67.2 80.5 3:00p 55.9 3:20a 2.7 4.9 0.00 3.9 22.0 2:35p S 18 66.6 76.9 3:15p 56.3 12:00m 1.1 2.7 0.40 2.1 18.0 10:40p SSW 19 51.5 61.3 2:45p 37.3 12:00m 13.5 0.0 0.45 7.6 29.0 3:40p NW 20 50.5 67.0 3:35p 30.7 5:50a 14.7 0.2 0.08 4.2 26.0 3:40p S 21 46.6 50.6 1:15p 43.1 5:45a 18.4 0.0 0.07 7.6 29.0 8:45p W 22 45.8 49.3 3:15p 42.2 10:05p 19.2 0.0 0.00 9.0 25.0 12:55p NW 23 41.0 52.8 2:10p 27.1 12:00m 24.0 0.0 0.00 4.1 18.0 1:10p NW 24 36.1 55.0 3:30p 22.3 7:00a 28.9 0.0 0.01 0.7 10.0 12:20p NW 25 41.1 53.3 1:40p 25.1 3:05a 23.9 0.0 0.00 1.0 15.0 11:45a ESE 26 50.1 63.2 2:50p 37.1 12:00m 14.9 0.0 0.00 2.1 21.0 3:55p ESE 27 43.7 60.0 2:45p 29.2 8:05a 21.3 0.0 0.00 1.8 18.0 2:15p E 28 46.4 59.7 12:40p 30.7 4:55a 18.6 0.0 0.00 1.8 19.0 4:40p E 29 48.5 59.0 12:55p 33.1 10:55p 16.5 0.0 0.00 6.0 27.0 2:05p NE 30 42.8 55.4 2:45p 32.0 3:30a 22.2 0.0 0.01 2.4 14.0 1:25p NNW 31 42.8 51.7 4:05p 34.8 7:50a 22.2 0.0 0.04 2.7 18.0 4:45p W ------------------------------------------------------------------------------------- 54.3 89.2 3 22.3 24 385.8 52.9 1.83 2.8 29.0 19 E Max >= 90.0: 0 Max <= 32.0: 0 Min <= 32.0: 8 Min <= 0.0: 0 Max Rain: 0.60 ON 10/07/25 Days of Rain: 8 (>.01 in) 4 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration