Climatological Report (Daily)
Issued by NWS
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CDUS43 KLOT 210634
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT MON SEP 21 2026
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 20 2026...
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)
YESTERDAY
MAXIMUM 69 1:58 AM 93 2018 74 -5 77
MINIMUM 61 9:14 PM 36 1991 55 6 66
AVERAGE 65 65 0 72
PRECIPITATION (IN)
YESTERDAY 1.21 1.33 2001 0.11 1.10 0.11
MONTH TO DATE 2.96 2.16 0.80 0.39
SINCE SEP 1 2.96 2.16 0.80 0.39
SINCE JAN 1 33.93 28.87 5.06 22.84
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 3 -3 0
MONTH TO DATE 3 30 -27 32
SINCE SEP 1 3 30 -27 32
SINCE JUL 1 3 36 -33 37
COOLING
YESTERDAY 0 3 -3 7
MONTH TO DATE 186 96 90 94
SINCE SEP 1 186 96 90 94
SINCE JAN 1 1112 968 144 1086
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NE (30)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NE (30)
AVERAGE WIND SPEED 13.8
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 100 3:00 AM
LOWEST 84 11:00 PM
AVERAGE 92
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 74 94 2017
MINIMUM TEMPERATURE (F) 55 39 1889
1983
1991
SUNRISE AND SUNSET
SEPTEMBER 21 2026.....SUNRISE 6:38 AM CDT SUNSET 6:50 PM CDT
SEPTEMBER 22 2026.....SUNRISE 6:39 AM CDT SUNSET 6:49 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$