Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 190635
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
135 AM CDT TUE AUG 19 2025
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR AUGUST 18 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 88 2:28 PM 99 1936 83 5 79
MINIMUM 73 MM 49 1963 66 7 68
AVERAGE 81 74 7 74
PRECIPITATION (IN)
YESTERDAY 0.47 1.80 1954 0.14 0.33 0.01
MONTH TO DATE 1.91 2.34 -0.43 2.86
SINCE JUN 1 13.94 9.90 4.04 12.61
SINCE JAN 1 23.51 22.38 1.13 28.59
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 16 10 6 9
MONTH TO DATE 256 187 69 189
SINCE JUN 1 1024 762 262 863
SINCE JAN 1 1075 844 231 976
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 24 HIGHEST WIND DIRECTION NW (300)
HIGHEST GUST SPEED 32 HIGHEST GUST DIRECTION NW (300)
AVERAGE WIND SPEED 9.4
SKY COVER
AVERAGE SKY COVER 0.8
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 90 10:00 PM
LOWEST 65 1:00 PM
AVERAGE 78
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 83 99 1947
1983
MINIMUM TEMPERATURE (F) 66 49 1933
SUNRISE AND SUNSET
AUGUST 19 2025........SUNRISE 6:04 AM CDT SUNSET 7:45 PM CDT
AUGUST 20 2025........SUNRISE 6:05 AM CDT SUNSET 7:43 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$