Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 090638
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
138 AM CDT THU OCT 09 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 8 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 64 1:14 PM 88 1997 66 -2 74
MINIMUM 48 6:23 AM 27 1987 48 0 50
AVERAGE 56 57 -1 62
PRECIPITATION (IN)
YESTERDAY 0.00 1.26 1884 0.11 -0.11 0.00
MONTH TO DATE 1.35 0.89 0.46 0.01
SINCE SEP 1 1.84 4.08 -2.24 1.33
SINCE JAN 1 24.29 30.79 -6.50 28.19
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 9 9 0 3
MONTH TO DATE 14 60 -46 18
SINCE SEP 1 46 137 -91 33
SINCE JUL 1 51 143 -92 33
COOLING
YESTERDAY 0 1 -1 0
MONTH TO DATE 55 8 47 9
SINCE SEP 1 221 124 97 199
SINCE JAN 1 1213 996 217 1185
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 8.2
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 80 5:00 AM
LOWEST 53 12:00 PM
AVERAGE 67
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 66 86 1949
2010
MINIMUM TEMPERATURE (F) 48 30 2000
SUNRISE AND SUNSET
OCTOBER 9 2025.......SUNRISE 6:58 AM CDT SUNSET 6:19 PM CDT
OCTOBER 10 2025.......SUNRISE 6:59 AM CDT SUNSET 6:18 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$