Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 150633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT MON SEP 15 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 14 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 82 3:40 PM 99 1939 76 6 88
MINIMUM 64 5:18 AM 40 1985 58 6 67
AVERAGE 73 67 6 78
PRECIPITATION (IN)
YESTERDAY 0.00 2.42 1896 0.10 -0.10 0.00
MONTH TO DATE 0.28 1.53 -1.25 0.04
SINCE SEP 1 0.28 1.53 -1.25 0.04
SINCE JAN 1 22.73 28.24 -5.51 26.90
SNOWFALL (IN)
YESTERDAY 0.0 T 1928 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 14 18 14
SINCE SEP 1 32 14 18 14
SINCE JUL 1 37 20 17 14
COOLING
YESTERDAY 8 4 4 13
MONTH TO DATE 40 75 -35 76
SINCE SEP 1 40 75 -35 76
SINCE JAN 1 1032 947 85 1062
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 7.1
SKY COVER
AVERAGE SKY COVER 0.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 5:00 AM
LOWEST 50 5:00 PM
AVERAGE 74
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 99 1939
MINIMUM TEMPERATURE (F) 58 39 2007
SUNRISE AND SUNSET
SEPTEMBER 15 2025.....SUNRISE 6:32 AM CDT SUNSET 7:01 PM CDT
SEPTEMBER 16 2025.....SUNRISE 6:33 AM CDT SUNSET 6:59 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$