368
CDUS43 KLOT 182138
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
438 PM CDT MON AUG 18 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 18 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
MAXIMUM 87 2:57 PM 98 1947 83 4 80
MINIMUM 72 12:31 AM 49 1963 65 7 68
AVERAGE 80 74 6 74
PRECIPITATION (IN)
TODAY T 2.85 1990 0.14 -0.14 0.01
MONTH TO DATE 2.80 2.53 0.27 1.50
SINCE JUN 1 10.72 10.34 0.38 10.49
SINCE JAN 1 20.22 24.99 -4.77 25.76
SNOWFALL (IN)
TODAY 0.0 0.0 MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 T
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 13 33 -20 6
SINCE JUL 1 0 2 -2 0
COOLING
TODAY 15 9 6 9
MONTH TO DATE 225 174 51 173
SINCE JUN 1 914 699 215 767
SINCE JAN 1 948 769 179 847
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 16 HIGHEST WIND DIRECTION S (160)
HIGHEST GUST SPEED 24 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 9.3
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 2:00 AM
LOWEST 70 2:00 PM
AVERAGE 80
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 99 1947
1983
MINIMUM TEMPERATURE (F) 65 51 1992
SUNRISE AND SUNSET
AUGUST 18 2025........SUNRISE 6:03 AM CDT SUNSET 7:47 PM CDT
AUGUST 19 2025........SUNRISE 6:04 AM CDT SUNSET 7:45 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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