Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 170633
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
133 AM CDT SUN AUG 17 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 16 2025...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 96 1:44 PM 101 1988 83 13 88
MINIMUM 75 11:59 PM 49 1976 67 8 68
AVERAGE 86 75 11 78
PRECIPITATION (IN)
YESTERDAY 0.39 3.79 1968 0.14 0.25 1.27
MONTH TO DATE 0.74 2.06 -1.32 2.39
SINCE JUN 1 12.77 9.62 3.15 12.14
SINCE JAN 1 22.34 22.10 0.24 28.12
DEGREE DAYS
HEATING
YESTERDAY 0 0 0 0
MONTH TO DATE 0 0 0 0
SINCE JUN 1 9 25 -16 3
SINCE JUL 1 0 1 -1 0
COOLING
YESTERDAY 21 10 11 13
MONTH TO DATE 228 167 61 168
SINCE JUN 1 996 742 254 842
SINCE JAN 1 1047 824 223 955
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 25 HIGHEST WIND DIRECTION N (360)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION N (10)
AVERAGE WIND SPEED 7.7
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 82 5:00 AM
LOWEST 48 2:00 PM
AVERAGE 65
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 99 1988
MINIMUM TEMPERATURE (F) 67 48 1976
SUNRISE AND SUNSET
AUGUST 17 2025........SUNRISE 6:02 AM CDT SUNSET 7:48 PM CDT
AUGUST 18 2025........SUNRISE 6:03 AM CDT SUNSET 7:46 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$