


Climatological Report (Monthly)
Issued by NWS
Issued by NWS
995 CXUS53 KILX 011623 CLMDEC CLIMATE REPORT NATIONAL WEATHER SERVICE LINCOLN IL 1123 AM CDT WED OCT 01 2025 ................................... ...THE DECATUR IL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 9999 TO 9999 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH MM MM LOW 42 09/08/2025 HIGHEST 99 09/14 MM MM 92 LOWEST 42R 09/08 MM MM 43 AVG. MAXIMUM 85.8 78.9 6.9 81.6 AVG. MINIMUM 56.5 55.0 1.5 56.9 MEAN 71.2 67.0 4.2 69.3 DAYS MAX >= 90 10 4.0 6.0 7 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.0 0.0 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM MM MM MINIMUM MM MM TOTALS 1.14 2.98 -1.84 1.84 DAILY AVG. 0.04 0.10 -0.06 0.06 DAYS >= .01 6 8.9 -2.9 6 DAYS >= .10 2 4.7 -2.7 6 DAYS >= .50 1 1.6 -0.6 1 DAYS >= 1.00 0 0.8 -0.8 1 GREATEST 24 HR. TOTAL 0.71 09/19 TO 09/20 1.35 DEGREE DAYS HEATING TOTAL 15 66 -51 17 SINCE 7/1 16 71 -55 MM COOLING TOTAL 207 124 83 154 SINCE 1/1 1433 1082 351 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 5.3 HIGHEST WIND SPEED/DIRECTION 30/190 DATE 09/20 HIGHEST GUST SPEED/DIRECTION 39/190 DATE 09/20 AVERAGE RH (PERCENT) 60 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 2 LIGHT RAIN 6 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 7 FOG W/VIS <= 1/4 MILE 0 HAZE 9 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$