879
CDUS43 KLOT 272132
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
432 PM CDT SAT SEP 27 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 27 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 87 2:59 PM 91 1971 71 16 72
MINIMUM 63 6:37 AM 31 1942 53 10 65
AVERAGE 75 62 13 69
PRECIPITATION (IN)
TODAY 0.00 2.28 2019 0.10 -0.10 0.00
MONTH TO DATE 0.49 2.90 -2.41 1.31
SINCE SEP 1 0.49 2.90 -2.41 1.31
SINCE JAN 1 22.94 29.61 -6.67 28.17
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 0 5 -5 0
MONTH TO DATE 32 59 -27 15
SINCE SEP 1 32 59 -27 15
SINCE JUL 1 37 65 -28 15
COOLING
TODAY 10 2 8 4
MONTH TO DATE 141 112 29 175
SINCE SEP 1 141 112 29 175
SINCE JAN 1 1133 984 149 1161
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 17 HIGHEST WIND DIRECTION W (260)
HIGHEST GUST SPEED 26 HIGHEST GUST DIRECTION W (250)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 12:00 AM
LOWEST 27 3:00 PM
AVERAGE 59
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 92 1953
MINIMUM TEMPERATURE (F) 52 29 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.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page