877
CDUS43 KLOT 200633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1233 AM CST SAT DEC 20 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 19 2025
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 24 11:59 PM 64 1877 36 -12 33
MINIMUM 10 8:46 AM -14 1983 24 -14 25
AVERAGE 17 30 -13 29
PRECIPITATION (IN)
YESTERDAY T 2.66 1895 0.07 -0.07 0.09
MONTH TO DATE 0.91 1.35 -0.44 0.50
SINCE DEC 1 0.91 1.35 -0.44 0.50
SINCE JAN 1 28.63 37.10 -8.47 33.49
SNOWFALL (IN)
YESTERDAY 0.1 8.3 1973 0.2 -0.1 0.5
MONTH TO DATE 7.0 4.3 2.7 0.7
SINCE DEC 1 7.0 4.3 2.7 0.7
SINCE JUL 1 17.4 6.3 11.1 3.6
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 48 36 12 36
MONTH TO DATE 796 626 170 667
SINCE DEC 1 796 626 170 667
SINCE JUL 1 1765 1777 -12 1434
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1215 1003 212 1212
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WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION W (270)
HIGHEST GUST SPEED 39 HIGHEST GUST DIRECTION W (260)
AVERAGE WIND SPEED 13.2
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 5:00 AM
LOWEST 51 2:00 PM
AVERAGE 63
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 67 1877
MINIMUM TEMPERATURE (F) 23 -9 1963
SUNRISE AND SUNSET
DECEMBER 20 2025......SUNRISE 7:16 AM CST SUNSET 4:23 PM CST
DECEMBER 21 2025......SUNRISE 7:16 AM CST SUNSET 4:23 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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