Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 200643
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
143 AM CDT WED AUG 20 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR AUGUST 19 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 78 11:56 AM 99 1947 82 -4 77
1983
MINIMUM 69 11:59 PM 51 1992 65 4 63
AVERAGE 74 74 0 70
PRECIPITATION (IN)
YESTERDAY 0.15 2.07 1921 0.13 0.02 0.00
MONTH TO DATE 4.68 2.66 2.02 1.50
SINCE JUN 1 12.60 10.47 2.13 10.49
SINCE JAN 1 22.10 25.12 -3.02 25.76
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 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 0 0 0 0
SINCE JUN 1 13 33 -20 6
SINCE JUL 1 0 2 -2 0
COOLING
YESTERDAY 9 9 0 5
MONTH TO DATE 233 183 50 178
SINCE JUN 1 922 708 214 772
SINCE JAN 1 956 778 178 852
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION N (350)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.9
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 2:00 AM
LOWEST 71 3:00 PM
AVERAGE 84
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 82 98 1947
MINIMUM TEMPERATURE (F) 65 47 1950
SUNRISE AND SUNSET
AUGUST 20 2025........SUNRISE 6:05 AM CDT SUNSET 7:44 PM CDT
AUGUST 21 2025........SUNRISE 6:06 AM CDT SUNSET 7:42 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$