MONTHLY CLIMATOLOGICAL SUMMARY for SEP. 2025 NAME: Sumner Illinois Weather CITY: Sumner STATE: IL ELEV: 449 ft LAT: 38° 43' 02" N LONG: 87° 51' 39" 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 68.9 87.7 3:00p 55.8 3:00a 3.0 6.9 0.00 2.3 15.0 1:30p N 2 69.5 87.4 5:00p 55.1 5:00a 3.5 7.9 0.00 1.7 14.0 2:30p N 3 69.8 86.2 4:00p 52.6 6:30a 3.6 8.4 0.06 2.3 20.0 10:30p N 4 64.9 77.0 5:30p 54.6 12:00m 2.9 2.8 0.03 3.6 16.0 2:30p N 5 65.1 76.2 3:00p 54.1 1:30a 2.8 2.9 0.00 3.8 18.0 11:30a N 6 64.0 76.0 5:30p 52.1 12:00m 3.8 2.7 0.00 2.9 18.0 10:30a N 7 60.9 76.3 4:30p 49.2 12:00m 6.7 2.5 0.00 2.9 19.0 1:30p N 8 61.8 82.1 4:30p 45.0 7:30a 7.8 4.6 0.00 2.0 14.0 11:30a N 9 65.2 86.9 5:00p 45.9 7:00a 6.4 6.6 0.00 2.3 18.0 4:00p N 10 72.7 89.9 6:00p 58.1 2:30a 1.3 9.0 0.00 1.6 10.0 1:00p N 11 74.9 93.7 4:30p 60.3 7:00a 0.9 10.8 0.00 2.3 14.0 6:00p N 12 74.5 93.7 5:00p 58.8 7:00a 1.1 10.6 0.00 1.8 13.0 1:30p N 13 77.2 94.1 3:30p 61.4 3:30a 0.6 12.8 0.00 3.4 17.0 4:00p N 14 81.1 100.1 4:00p 67.1 7:00a 0.0 16.1 0.00 3.4 16.0 5:30p N 15 80.1 97.6 4:30p 66.9 7:00a 0.0 15.1 0.00 2.9 16.0 1:00p N 16 76.5 95.6 3:00p 63.7 7:00a 0.1 11.5 0.00 1.6 15.0 4:30p N 17 73.1 94.3 5:30p 56.1 7:00a 2.1 10.2 0.00 1.3 11.0 1:30p N 18 74.5 98.3 5:00p 55.9 7:00a 2.4 11.9 0.00 1.8 12.0 12:00p N 19 74.1 91.6 3:30p 58.2 7:30a 1.3 10.5 0.00 2.9 16.0 2:30p N 20 72.0 90.5 2:00p 60.2 4:30a 1.0 8.0 0.06 2.3 17.0 6:00p N 21 73.4 86.0 4:00p 62.8 6:00a 0.3 8.7 0.00 2.6 16.0 1:00p N 22 68.4 74.4 6:30p 64.5 12:00m 0.0 3.4 1.39 2.5 19.0 3:30a N 23 70.5 80.1 1:00p 64.2 7:00a 0.1 5.6 0.52 2.6 24.0 7:00p N 24 70.3 77.3 3:00p 66.0 3:00a 0.0 5.3 0.18 1.9 11.0 12:00p N 25 68.2 79.7 4:30p 58.0 12:00m 1.2 4.3 0.12 3.9 16.0 11:00a N 26 66.8 87.9 5:30p 52.6 7:00a 4.6 6.4 0.00 1.1 12.0 1:30p N 27 67.9 90.2 5:00p 51.7 7:00a 4.6 7.5 0.00 1.1 10.0 1:30p N 28 71.6 94.1 5:30p 55.1 7:00a 3.0 9.5 0.00 1.3 16.0 2:00p N 29 72.8 94.1 3:30p 58.0 7:30a 2.0 9.8 0.00 1.5 16.0 2:00p N 30 72.3 91.2 4:00p 58.4 7:30a 1.7 9.1 0.00 2.2 16.0 11:30a N ------------------------------------------------------------------------------------- 70.8 100.1 14 45.0 8 68.8 241.4 2.36 2.3 24.0 23 N Max >= 90.0: 14 Max <= 32.0: 0 Min <= 32.0: 0 Min <= 0.0: 0 Max Rain: 1.39 ON 09/22/25 Days of Rain: 7 (>.01 in) 4 (>.1 in) 1 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration