MONTHLY CLIMATOLOGICAL SUMMARY for AUG. 2026 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 72.8 78.2 3:00p 69.2 12:00m 0.0 7.8 0.00 4.3 21.0 1:00a N 2 72.6 82.0 6:00p 68.0 7:00a 0.0 7.6 0.00 5.1 21.0 12:00p N 3 74.8 89.9 7:00p 63.9 6:30a 0.1 9.9 0.00 2.1 10.0 12:30p N 4 76.1 92.2 5:30p 62.2 7:00a 0.2 11.4 0.00 1.2 10.0 2:00p N 5 75.1 90.1 4:30p 60.2 6:30a 0.7 10.8 0.00 1.6 8.0 3:00p N 6 73.3 80.0 4:00p 68.3 6:00a 0.0 8.3 0.00 1.8 13.0 9:00a N 7 79.4 92.0 3:30p 69.2 2:30a 0.0 14.4 0.00 2.9 14.0 4:30p N 8 81.5 92.7 2:30p 71.5 7:00a 0.0 16.5 0.00 2.8 14.0 4:00p N 9 79.9 90.9 4:00p 69.0 6:30a 0.0 14.9 0.00 4.0 17.0 5:30p SSE 10 83.6 94.9 3:30p 74.1 6:30a 0.0 18.6 0.00 4.8 17.0 1:00p S 11 82.3 96.0 5:00p 72.6 11:00p 0.0 17.3 0.00 5.1 26.0 6:30p SSW 12 80.6 90.5 4:30p 72.8 12:30a 0.0 15.6 0.00 4.1 18.0 3:00p SSE 13 81.7 93.9 2:00p 71.6 5:30a 0.0 16.7 0.00 3.8 14.0 3:00p N 14 81.7 96.3 7:00p 74.3 8:30a 0.0 16.7 0.00 3.8 22.0 5:30a ENE 15 83.4 97.7 4:00p 74.5 5:30a 0.0 18.4 0.00 3.8 17.0 10:30a S 16 83.7 95.1 2:30p 77.7 7:00a 0.0 18.7 0.08 2.8 15.0 2:30p WNW 17 77.0 84.3 3:30p 67.0 12:00m 0.0 12.0 0.06 4.3 19.0 4:00p N 18 74.9 91.6 4:30p 62.2 7:00a 0.4 10.3 0.00 1.6 11.0 12:30p N 19 74.5 85.5 2:30p 67.0 3:30a 0.0 9.5 0.00 2.4 15.0 1:30p N 20 76.8 89.0 4:00p 69.5 7:30a 0.0 11.8 0.20 2.4 14.0 6:00a N 21 75.3 88.6 3:30p 63.8 7:00a 0.1 10.4 0.00 1.9 12.0 1:00p N 22 74.3 84.5 4:00p 65.9 2:30a 0.0 9.3 0.00 4.5 24.0 1:00p N 23 70.3 83.5 3:30p 57.8 7:00a 1.6 6.9 0.00 2.5 23.0 4:00p N 24 68.8 86.2 4:00p 54.6 7:00a 2.7 6.6 0.00 1.3 13.0 2:30p N 25 72.2 91.5 5:30p 56.0 6:30a 2.3 9.5 0.00 1.9 12.0 10:30a N 26 78.0 92.3 6:00p 64.1 1:30a 0.1 13.1 0.02 3.0 14.0 1:30p N 27 75.1 87.0 4:30p 64.3 7:00a 0.0 10.1 0.00 2.9 16.0 4:30p NW 28 75.4 92.4 4:30p 63.0 7:30a 0.3 10.7 0.00 2.0 13.0 12:00p N 29 75.1 93.2 4:00p 58.0 7:00a 1.4 11.5 0.00 1.8 12.0 12:30p N 30 79.1 96.4 4:30p 63.7 7:00a 0.1 14.2 0.00 3.2 19.0 3:00p N 31 83.7 99.5 5:00p 70.6 3:30a 0.0 18.7 0.00 4.2 20.0 12:00p N ------------------------------------------------------------------------------------- 77.2 99.5 31 54.6 24 10.0 388.2 0.36 3.0 26.0 11 N Max >= 90.0: 19 Max <= 32.0: 0 Min <= 32.0: 0 Min <= 0.0: 0 Max Rain: 0.20 ON 08/20/26 Days of Rain: 4 (>.01 in) 1 (>.1 in) 0 (>1 in) Heat Base: 65.0 Cool Base: 65.0 Method: Integration