Climatological Report (Daily)
Issued by NWS
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CDUS43 KLOT 310633
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SUN AUG 31 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 30 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 74 1:30 PM 96 1925 81 -7 83
1953
2013
MINIMUM 61 11:59 PM 47 1915 63 -2 69
1946
AVERAGE 68 72 -4 76
PRECIPITATION (IN)
YESTERDAY 0.00 4.31 2001 0.14 -0.14 0.28
MONTH TO DATE 5.03 4.11 0.92 2.60
SINCE JUN 1 12.95 11.92 1.03 11.59
SINCE JAN 1 22.45 26.57 -4.12 26.86
SNOWFALL (IN)
YESTERDAY 0.0 T 1949 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE JUN 1 0.0 0.0 0.0 T
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 5 0 5 0
SINCE JUN 1 18 33 -15 6
SINCE JUL 1 5 2 3 0
COOLING
YESTERDAY 3 7 -4 11
MONTH TO DATE 269 270 -1 304
SINCE JUN 1 958 795 163 898
SINCE JAN 1 992 865 127 978
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 19 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 70 10:00 PM
LOWEST 47 12:00 PM
AVERAGE 59
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 99 1953
MINIMUM TEMPERATURE (F) 63 47 1872
SUNRISE AND SUNSET
AUGUST 31 2025........SUNRISE 6:16 AM CDT SUNSET 7:26 PM CDT
SEPTEMBER 1 2025.....SUNRISE 6:18 AM CDT SUNSET 7:25 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$