Climatological Report (Annual)
Issued by NWS
Issued by NWS
841 CXUS53 KLOT 011730 CLAORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 936 AM CST WED JAN 1 2020 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 2019... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2019 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 105 07/24/1934 LOW -27 01/20/1985 HIGHEST 95 07/20 MM MM 97 08/04 05/27 LOWEST -23 01/30 MM MM -9 01/02 01/01 AVG. MAXIMUM 57.8 59.1 -1.3 59.1 AVG. MINIMUM 41.4 40.8 0.6 42.8 MEAN 49.6 49.9 -0.3 50.9 DAYS MAX >= 90 14 14.0 0.0 26 DAYS MAX <= 32 50 42.7 7.3 32 DAYS MIN <= 32 131 121.8 9.2 134 DAYS MIN <= 0 7 7.1 -0.1 6 PRECIPITATION (INCHES) RECORD MAXIMUM 50.86 2008 MINIMUM 22.22 1962 TOTALS 49.54 36.89 12.65 49.23 DAILY AVG. 0.14 0.10 0.04 0.14 DAYS >= .01 151 124.1 26.9 147 DAYS >= .10 93 69.1 23.9 87 DAYS >= .50 32 22.7 9.3 33 DAYS >= 1.00 10 8.3 1.7 15 GREATEST 24 HR. TOTAL 2.28 MM 2.49 SNOWFALL (INCHES) RECORDS TOTAL 95.3 1978 24 HR TOTAL MM SNOW DEPTH 29 01/14/1979 TOTALS 45.7 36.3 9.4 44.8 SINCE 7/1 10.3 9.6 0.7 14.1 SNOWDEPTH AVG. 0 MM MM 0 DAYS >= TRACE 65 28.0 37.0 59 DAYS >= 1.0 14 11.4 2.6 15 GREATEST SNOW DEPTH 10 01/29 12 24 HR TOTAL 5.4 MM 7.8 DEGREE_DAYS HEATING TOTAL 6429 6339 90 6281 SINCE 7/1 MM 2411 MM MM COOLING TOTAL 960 842 118 1290 SINCE 1/1 960 843 117 1290 FREEZE DATES RECORD EARLIEST 09/22/1995 LATEST 05/25/1992 EARLIEST 10/15 LATEST 04/23 ................................................................. WIND (MPH) AVERAGE WIND SPEED 9.6 HIGHEST WIND SPEED/DIRECTION 46/350 DATE 06/30 HIGHEST GUST SPEED/DIRECTION 60/240 DATE 11/27 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.70 NUMBER OF DAYS FAIR 48 NUMBER OF DAYS PC 143 NUMBER OF DAYS CLOUDY 174 AVERAGE RH (PERCENT) 71 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 60 MIXED PRECIP 0 HEAVY RAIN 47 RAIN 66 LIGHT RAIN 156 FREEZING RAIN 1 LT FREEZING RAIN 13 HAIL 2 HEAVY SNOW 2 SNOW 19 LIGHT SNOW 59 SLEET 5 FOG 177 FOG W/VIS <= 1/4 MILE 11 HAZE 48 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$