749
CDUS43 KLOT 130632
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1232 AM CST SAT DEC 13 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 12 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 31 1:53 PM 61 1877 37 -6 15
MINIMUM 20 7:13 AM -8 2000 25 -5 4
AVERAGE 26 31 -5 10
PRECIPITATION (IN)
YESTERDAY T 1.76 1972 0.06 -0.06 0.00
MONTH TO DATE 0.72 0.89 -0.17 T
SINCE DEC 1 0.72 0.89 -0.17 T
SINCE JAN 1 28.44 36.64 -8.20 32.99
SNOWFALL (IN)
YESTERDAY T 11.3 1903 0.2 -0.2 0.0
MONTH TO DATE 6.9 2.6 4.3 0.2
SINCE DEC 1 6.9 2.6 4.3 0.2
SINCE JUL 1 17.3 4.6 12.7 3.1
SNOW DEPTH 1
DEGREE DAYS
HEATING
YESTERDAY 39 34 5 55
MONTH TO DATE 489 383 106 441
SINCE DEC 1 489 383 106 441
SINCE JUL 1 1458 1534 -76 1208
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
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 7.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT SNOW
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 81 9:00 PM
LOWEST 61 2:00 PM
AVERAGE 71
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 37 67 1975
MINIMUM TEMPERATURE (F) 25 -13 1903
SUNRISE AND SUNSET
DECEMBER 13 2025......SUNRISE 7:11 AM CST SUNSET 4:21 PM CST
DECEMBER 14 2025......SUNRISE 7:12 AM CST SUNSET 4:21 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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