Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS53 KLOT 011320 CLMORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 820 AM CDT SUN OCT 01 2023 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 101 09/02/1953 09/01/1953 LOW 29 09/23/1995 09/30/1984 09/28/1942 HIGHEST 94 09/03 88 09/01 09/04 09/05 09/03 LOWEST 53 09/14 44 09/29 09/18 AVG. MAXIMUM 77.7 75.5 2.2 76.0 AVG. MINIMUM 61.2 57.1 4.1 58.8 MEAN 69.5 66.3 3.2 67.4 DAYS MAX >= 90 3 1.6 1.4 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 0.1 -0.1 0 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 14.17 1961 MINIMUM 0.01 1979 TOTALS 3.36 3.19 0.17 2.20 DAILY AVG. 0.11 0.11 0.00 0.07 DAYS >= .01 16 8.5 7.5 7 DAYS >= .10 5 5.6 -0.6 3 DAYS >= .50 2 1.9 0.1 1 DAYS >= 1.00 1 0.8 0.2 1 GREATEST 24 HR. TOTAL 1.62 09/16 TO 09/17 1.45 DEGREE DAYS HEATING TOTAL 13 77 -64 75 SINCE 7/1 15 82 -67 MM COOLING TOTAL 155 116 39 154 SINCE 1/1 1089 988 101 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.5 HIGHEST WIND SPEED/DIRECTION 23/190 DATE 09/05 HIGHEST GUST SPEED/DIRECTION 32/190 DATE 09/05 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.62 NUMBER OF DAYS FAIR 7 NUMBER OF DAYS PC 10 NUMBER OF DAYS CLOUDY 13 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 4 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 3 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 13 FOG W/VIS <= 1/4 MILE 0 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. NO RECORDS SET OR TIED IN SEPTEMBER 2023. $$