402
CDUS43 KLOT 210631
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1231 AM CST THU DEC 21 2023
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR DECEMBER 20 2023
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 45 3:07 PM 67 1877 35 10 33
MINIMUM 30 6:43 AM -9 1963 23 7 18
AVERAGE 38 29 9 26
PRECIPITATION (IN)
YESTERDAY 0.00 1.67 1895 0.06 -0.06 0.00
MONTH TO DATE 1.71 1.41 0.30 2.07
SINCE DEC 1 1.71 1.41 0.30 2.07
SINCE JAN 1 32.47 37.16 -4.69 31.90
SNOWFALL (IN)
YESTERDAY 0.0 11.0 1960 0.2 -0.2 0.0
MONTH TO DATE 0.3 4.5 -4.2 1.9
SINCE DEC 1 0.3 4.5 -4.2 1.9
SINCE JUL 1 3.0 6.5 -3.5 3.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 27 36 -9 39
MONTH TO DATE 538 662 -124 630
SINCE DEC 1 538 662 -124 630
SINCE JUL 1 1502 1813 -311 1695
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE DEC 1 0 0 0 0
SINCE JAN 1 1145 1003 142 1174
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 78 11:00 PM
LOWEST 43 2:00 PM
AVERAGE 61
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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 2023......SUNRISE 7:16 AM CST SUNSET 4:23 PM CST
DECEMBER 22 2023......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.
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