Climatological Report (Daily)
Issued by NWS
Issued by NWS
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553
CDUS43 KLOT 152136
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
436 PM CDT TUE SEP 15 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 15 2026...
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 85 MM 99 1939 76 9 83
MINIMUM 67 7:56 AM 39 2007 58 9 65
AVERAGE 76 67 9 74
PRECIPITATION (IN)
TODAY 0.07 1.38 1936 0.10 -0.03 0.00
MONTH TO DATE 0.15 1.63 -1.48 0.28
SINCE SEP 1 0.15 1.63 -1.48 0.28
SINCE JAN 1 31.12 28.34 2.78 22.73
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 2 -2 0
MONTH TO DATE 3 16 -13 32
SINCE SEP 1 3 16 -13 32
SINCE JUL 1 3 22 -19 37
COOLING
TODAY 11 4 7 9
MONTH TO DATE 167 79 88 49
SINCE SEP 1 167 79 88 49
SINCE JAN 1 1093 951 142 1041
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 20 HIGHEST WIND DIRECTION S (180)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION S (180)
AVERAGE WIND SPEED 9.7
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
RAIN
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 10:00 AM
LOWEST 51 12:00 AM
AVERAGE 69
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 76 92 1931
1955
MINIMUM TEMPERATURE (F) 57 37 1984
SUNRISE AND SUNSET
SEPTEMBER 15 2026.....SUNRISE 6:32 AM CDT SUNSET 7:01 PM CDT
SEPTEMBER 16 2026.....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.
$$