578
CDUS43 KLOT 140637
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
137 AM CDT SUN SEP 14 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 13 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 78 4:56 PM 98 1939 77 1 85
MINIMUM 64 8:26 AM 39 1890 58 6 66
AVERAGE 71 68 3 76
PRECIPITATION (IN)
YESTERDAY 0.27 6.64 2008 0.10 0.17 0.00
MONTH TO DATE 0.28 1.43 -1.15 0.04
SINCE SEP 1 0.28 1.43 -1.15 0.04
SINCE JAN 1 22.73 28.14 -5.41 26.90
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 2 -2 0
MONTH TO DATE 32 12 20 14
SINCE SEP 1 32 12 20 14
SINCE JUL 1 37 18 19 14
COOLING
YESTERDAY 6 4 2 11
MONTH TO DATE 32 71 -39 63
SINCE SEP 1 32 71 -39 63
SINCE JAN 1 1024 943 81 1049
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 28 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 40 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 8.4
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 96 7:00 AM
LOWEST 53 3:00 AM
AVERAGE 75
......................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 99 1939
MINIMUM TEMPERATURE (F) 58 40 1985
SUNRISE AND SUNSET
SEPTEMBER 14 2025.....SUNRISE 6:31 AM CDT SUNSET 7:02 PM CDT
SEPTEMBER 15 2025.....SUNRISE 6:32 AM CDT SUNSET 7:01 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