601
CDUS43 KLOT 170650
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
150 AM CDT MON AUG 17 2026
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 16 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 86 2:15 PM 98 1983 83 3 95
1988
MINIMUM 70 11:59 PM 48 2004 65 5 73
AVERAGE 78 74 4 84
PRECIPITATION (IN)
YESTERDAY 0.12 3.79 1968 0.15 -0.03 0.59
MONTH TO DATE 4.10 2.24 1.86 1.11
SINCE JUN 1 14.46 10.05 4.41 9.03
SINCE JAN 1 30.05 24.70 5.35 18.53
SNOWFALL (IN)
YESTERDAY 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 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 11 33 -22 13
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 13 9 4 19
MONTH TO DATE 170 156 14 200
SINCE JUN 1 725 681 44 889
SINCE JAN 1 803 751 52 923
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 27 HIGHEST GUST DIRECTION SW (220)
AVERAGE WIND SPEED 9.1
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 6:00 AM
LOWEST 65 1:00 PM
AVERAGE 83
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 98 1947
1988
MINIMUM TEMPERATURE (F) 65 48 1976
SUNRISE AND SUNSET
AUGUST 17 2026........SUNRISE 6:02 AM CDT SUNSET 7:49 PM CDT
AUGUST 18 2026........SUNRISE 6:03 AM CDT SUNSET 7:47 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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