149
CDUS43 KLOT 210635
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1235 AM CST SUN DEC 21 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 20 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 40 3:16 PM 67 1877 35 5 35
MINIMUM 24 1:06 AM -9 1963 23 1 21
AVERAGE 32 29 3 28
PRECIPITATION (IN)
YESTERDAY T 1.67 1895 0.06 -0.06 0.08
MONTH TO DATE 0.91 1.41 -0.50 0.58
SINCE DEC 1 0.91 1.41 -0.50 0.58
SINCE JAN 1 28.63 37.16 -8.53 33.57
SNOWFALL (IN)
YESTERDAY 0.0 11.0 1960 0.2 -0.2 1.7
MONTH TO DATE 7.0 4.5 2.5 2.4
SINCE DEC 1 7.0 4.5 2.5 2.4
SINCE JUL 1 17.4 6.5 10.9 5.3
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 33 36 -3 37
MONTH TO DATE 829 662 167 704
SINCE DEC 1 829 662 167 704
SINCE JUL 1 1798 1813 -15 1471
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 25 HIGHEST WIND DIRECTION W (280)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION W (280)
AVERAGE WIND SPEED 15.0
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 71 1:00 AM
LOWEST 35 7:00 PM
AVERAGE 53
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 35 62 1967
MINIMUM TEMPERATURE (F) 23 -14 1989
SUNRISE AND SUNSET
DECEMBER 21 2025......SUNRISE 7:16 AM CST SUNSET 4:23 PM CST
DECEMBER 22 2025......SUNRISE 7:17 AM CST SUNSET 4:24 PM CST
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page