CXUS53 KLOT 021250 CCA CLMORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 1112 AM CDT WED MAY 01 2024 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 91 04/22/1980 04/30/1942 LOW 7 04/07/1982 HIGHEST 81 04/14 83 04/13 04/16 04/14 04/15 LOWEST 32 04/06 30 04/02 AVG. MAXIMUM 61.6 59.0 2.6 62.2 AVG. MINIMUM 43.8 40.3 3.5 41.3 MEAN 52.7 49.7 3.0 51.8 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 1 6.0 -5.0 5 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 8.68 2013 MINIMUM 0.14 1899 TOTALS 3.47 3.75 -0.28 2.02 DAILY AVG. 0.12 0.13 -0.01 0.07 DAYS >= .01 14 12.3 1.7 14 DAYS >= .10 10 7.1 2.9 8 DAYS >= .50 1 2.5 -1.5 1 DAYS >= 1.00 0 0.8 -0.8 0 GREATEST 24 HR. TOTAL 0.82 04/01 TO 04/02 0.88 SNOWFALL (INCHES) RECORDS TOTAL 13.6 1938 TOTALS T 1.3 -1.3 0.5 SINCE 7/1 22.2 38.4 -16.2 MM SNOWDEPTH AVG. 0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 MM 24 HR TOTAL T 04/02 TO 04/03 0.4 04/04 TO 04/04 DEGREE DAYS HEATING TOTAL 371 468 -97 416 SINCE 7/1 4701 5745 -1044 MM COOLING TOTAL 9 8 1 25 SINCE 1/1 9 10 -1 MM ................................................................ WIND (MPH) AVERAGE WIND SPEED 11.4 HIGHEST WIND SPEED/DIRECTION 30/320 DATE 04/12 30/170 04/28 HIGHEST GUST SPEED/DIRECTION 45/250 DATE 04/17 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.62 NUMBER OF DAYS FAIR 8 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 13 AVERAGE RH (PERCENT) 63 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 8 MIXED PRECIP 0 HEAVY RAIN 6 RAIN 8 LIGHT RAIN 17 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 1 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 3 SLEET 1 FOG 10 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. $$