822
CDUS43 KLOT 270633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SAT SEP 27 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 26 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 83 4:17 PM 92 2017 72 11 77
MINIMUM 59 6:20 AM 35 1928 53 6 57
AVERAGE 71 62 9 67
PRECIPITATION (IN)
YESTERDAY 0.00 2.71 1933 0.10 -0.10 0.00
MONTH TO DATE 0.49 2.80 -2.31 1.31
SINCE SEP 1 0.49 2.80 -2.31 1.31
SINCE JAN 1 22.94 29.51 -6.57 28.17
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 SEP 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 5 -5 0
MONTH TO DATE 32 54 -22 15
SINCE SEP 1 32 54 -22 15
SINCE JUL 1 37 60 -23 15
COOLING
YESTERDAY 6 2 4 2
MONTH TO DATE 131 110 21 171
SINCE SEP 1 131 110 21 171
SINCE JAN 1 1123 982 141 1157
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION SW (240)
HIGHEST GUST SPEED 22 HIGHEST GUST DIRECTION SW (240)
AVERAGE WIND SPEED 7.1
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 11:00 PM
LOWEST 36 2:00 PM
AVERAGE 65
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 91 1971
MINIMUM TEMPERATURE (F) 53 31 1942
SUNRISE AND SUNSET
SEPTEMBER 27 2025.....SUNRISE 6:45 AM CDT SUNSET 6:40 PM CDT
SEPTEMBER 28 2025.....SUNRISE 6:46 AM CDT SUNSET 6:38 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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