Climatological Report (Annual)
Issued by NWS
Issued by NWS
000 CXUS53 KLOT 012009 CLAORD CLIMATE REPORT NATIONAL WEATHER SERVICE CHICAGO IL 209 PM CST SAT JAN 01 2022 ................................... ...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 2021... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2021 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 08/24 MM MM 97 08/24 LOWEST -7 02/07 MM MM -2 02/14 AVG. MAXIMUM 61.5 59.5 2.0 61.7 AVG. MINIMUM 45.1 43.0 2.1 44.9 MEAN 53.3 51.2 2.1 53.3 DAYS MAX >= 90 22 16.7 5.3 31 DAYS MAX <= 32 31 43.4 -12.4 19 DAYS MIN <= 32 107 121.3 -14.3 103 DAYS MIN <= 0 5 6.5 -1.5 1 PRECIPITATION (INCHES) RECORD MAXIMUM 50.86 2008 MINIMUM 22.22 1962 TOTALS 30.15 37.86 -7.71 39.22 DAILY AVG. 0.08 0.10 -0.02 0.11 DAYS >= .01 118 125.8 -7.8 118 DAYS >= .10 61 71.6 -10.6 77 DAYS >= .50 16 23.8 -7.8 22 DAYS >= 1.00 6 8.3 -2.3 7 GREATEST 24 HR. TOTAL 1.91 08/24 TO 08/24 3.53 SNOWFALL (INCHES) RECORDS TOTAL 95.3 1978 SNOW DEPTH 29 01/14/1979 TOTALS 47.2 38.4 8.8 28.0 SINCE 7/1 1.9 9.6 -7.7 3.5 DAYS >= TRACE 51 MM MM 56 DAYS >= 1.0 13 11.4 1.6 13 GREATEST SNOW DEPTH 21 02/16 3 24 HR TOTAL 6.3 01/31 TO 01/31 3.1 DEGREE DAYS HEATING TOTAL 5415 5974 -559 5472 SINCE 7/1 1799 2220 -421 1989 COOLING TOTAL 1316 1003 313 1295 SINCE 1/1 1316 1003 313 1295 ................................................................ WIND (MPH) AVERAGE WIND SPEED 9.3 HIGHEST WIND SPEED/DIRECTION 41/240 DATE 12/11 41/200 12/15 HIGHEST GUST SPEED/DIRECTION 66/200 DATE 12/15 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.62 NUMBER OF DAYS FAIR 74 NUMBER OF DAYS PC 146 NUMBER OF DAYS CLOUDY 145 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 43 MIXED PRECIP 0 HEAVY RAIN 37 RAIN 48 LIGHT RAIN 137 FREEZING RAIN 0 LT FREEZING RAIN 4 HAIL 0 HEAVY SNOW 5 SNOW 12 LIGHT SNOW 49 SLEET 6 FOG 133 FOG W/VIS <= 1/4 MILE 6 HAZE 60 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$