Climatological Report (Daily)
Issued by NWS
Issued by NWS
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208
CDUS43 KLOT 030643
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT WED SEP 03 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 2 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 81 2:17 PM 101 1953 80 1 76
MINIMUM 59 5:25 AM 44 1946 62 -3 58
AVERAGE 70 71 -1 67
PRECIPITATION (IN)
YESTERDAY 0.00 1.55 2010 0.12 -0.12 0.00
MONTH TO DATE 0.00 0.24 -0.24 0.00
SINCE SEP 1 0.00 0.24 -0.24 0.00
SINCE JAN 1 22.45 26.95 -4.50 26.86
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 0 0 0
MONTH TO DATE 0 0 0 0
SINCE SEP 1 0 0 0 0
SINCE JUL 1 5 6 -1 0
COOLING
YESTERDAY 5 6 -1 2
MONTH TO DATE 8 13 -5 5
SINCE SEP 1 8 13 -5 5
SINCE JAN 1 1000 885 115 991
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (80)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (90)
AVERAGE WIND SPEED 4.1
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 6:00 AM
LOWEST 36 3:00 PM
AVERAGE 63
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 97 1953
MINIMUM TEMPERATURE (F) 62 47 1974
SUNRISE AND SUNSET
SEPTEMBER 3 2025.....SUNRISE 6:20 AM CDT SUNSET 7:21 PM CDT
SEPTEMBER 4 2025.....SUNRISE 6:21 AM CDT SUNSET 7:20 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$