173
CDUS43 KLOT 260637
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT TUE AUG 26 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 25 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 70 3:25 PM 95 1959 82 -12 93
1991
2003
MINIMUM 55 6:00 AM 47 1917 64 -9 74
AVERAGE 63 73 -10 84
PRECIPITATION (IN)
YESTERDAY 0.00 1.88 1972 0.13 -0.13 0.00
MONTH TO DATE 4.68 3.45 1.23 1.50
SINCE JUN 1 12.60 11.26 1.34 10.49
SINCE JAN 1 22.10 25.91 -3.81 25.76
SNOWFALL (IN)
YESTERDAY 0.0 T 1941 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
YESTERDAY 2 0 2 0
MONTH TO DATE 2 0 2 0
SINCE JUN 1 15 33 -18 6
SINCE JUL 1 2 2 0 0
COOLING
YESTERDAY 0 8 -8 19
MONTH TO DATE 261 232 29 220
SINCE JUN 1 950 757 193 814
SINCE JAN 1 984 827 157 894
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION NW (330)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION W (290)
AVERAGE WIND SPEED 8.8
SKY COVER
AVERAGE SKY COVER 0.4
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 4:00 AM
LOWEST 43 5:00 PM
AVERAGE 62
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 81 97 1953
1973
MINIMUM TEMPERATURE (F) 64 47 1887
SUNRISE AND SUNSET
AUGUST 26 2025........SUNRISE 6:11 AM CDT SUNSET 7:34 PM CDT
AUGUST 27 2025........SUNRISE 6:12 AM CDT SUNSET 7:33 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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