Climatological Report (Monthly)
Issued by NWS
Issued by NWS
000 CXUS53 KLOT 011320 CLMMDW CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 820 AM CDT SUN OCT 01 2023 ................................... ...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1928 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 102 09/15/1939 LOW 29 09/28/1942 HIGHEST 93 09/03 94 09/20 09/04 LOWEST 51 09/14 46 09/29 AVG. MAXIMUM 76.8 76.3 0.5 78.3 AVG. MINIMUM 60.8 58.8 2.0 61.8 MEAN 68.8 67.5 1.3 70.1 DAYS MAX >= 90 3 2.2 0.8 3 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 14.17 1961 MINIMUM 0.01 1979 TOTALS 3.60 2.77 0.83 2.06 DAILY AVG. 0.12 0.09 0.03 0.07 DAYS >= .01 12 8.9 3.1 8 DAYS >= .10 5 5.4 -0.4 3 DAYS >= .50 3 1.7 1.3 1 DAYS >= 1.00 2 0.5 1.5 1 GREATEST 24 HR. TOTAL 1.30 09/11 TO 09/11 1.40 DEGREE DAYS HEATING TOTAL 15 59 -44 54 SINCE 7/1 16 63 -47 MM COOLING TOTAL 137 136 1 214 SINCE 1/1 1099 1092 7 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.6 HIGHEST WIND SPEED/DIRECTION 23/250 DATE 09/06 HIGHEST GUST SPEED/DIRECTION 36/180 DATE 09/06 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.61 NUMBER OF DAYS FAIR 8 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 13 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 3 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 6 FOG W/VIS <= 1/4 MILE 1 HAZE 4 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$