836
CDUS43 KLOT 082135
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT MON SEP 08 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 8 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 71 2:59 PM 96 1933 78 -7 72
1959
1960
MINIMUM 50 5:57 AM 43 1986 60 -10 49
AVERAGE 61 69 -8 61
PRECIPITATION (IN)
TODAY 0.00 1.65 1885 0.11 -0.11 0.00
MONTH TO DATE 0.01 0.92 -0.91 0.04
SINCE SEP 1 0.01 0.92 -0.91 0.04
SINCE JAN 1 22.46 27.63 -5.17 26.90
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 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
TODAY 4 1 3 4
MONTH TO DATE 32 5 27 14
SINCE SEP 1 32 5 27 14
SINCE JUL 1 37 11 26 14
COOLING
TODAY 0 5 -5 0
MONTH TO DATE 8 48 -40 25
SINCE SEP 1 8 48 -40 25
SINCE JAN 1 1000 920 80 1011
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION S (190)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (170)
AVERAGE WIND SPEED 5.8
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 74 5:00 AM
LOWEST 35 2:00 PM
AVERAGE 55
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 95 1955
1959
1983
MINIMUM TEMPERATURE (F) 60 43 1986
SUNRISE AND SUNSET
SEPTEMBER 8 2025.....SUNRISE 6:25 AM CDT SUNSET 7:13 PM CDT
SEPTEMBER 9 2025.....SUNRISE 6:26 AM CDT SUNSET 7:11 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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