Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 170647
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
147 AM CDT THU JUL 17 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR JULY 16 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 90 1:48 PM 100 1887 85 5 85
MINIMUM 70 11:59 PM 49 1945 67 3 69
AVERAGE 80 76 4 77
PRECIPITATION (IN)
YESTERDAY 0.36 2.48 1950 0.12 0.24 0.00
MONTH TO DATE 3.29 1.82 1.47 5.55
SINCE JUN 1 6.92 5.92 1.00 8.65
SINCE JAN 1 16.42 20.57 -4.15 23.92
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 31 -18 6
SINCE JUL 1 0 0 0 0
COOLING
YESTERDAY 15 11 4 12
MONTH TO DATE 221 167 54 176
SINCE JUN 1 517 366 151 454
SINCE JAN 1 551 436 115 534
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 41 HIGHEST WIND DIRECTION SW (230)
HIGHEST GUST SPEED 67 HIGHEST GUST DIRECTION SW (230)
AVERAGE WIND SPEED 9.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
THUNDERSTORM
LIGHT RAIN
FOG
HAZE
SANDSTORM
RELATIVE HUMIDITY (PERCENT)
HIGHEST 94 5:00 AM
LOWEST 52 2:00 PM
AVERAGE 73
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 85 100 1887
1942
MINIMUM TEMPERATURE (F) 67 51 1985
SUNRISE AND SUNSET
JULY 17 2025..........SUNRISE 5:31 AM CDT SUNSET 8:24 PM CDT
JULY 18 2025..........SUNRISE 5:32 AM CDT SUNSET 8:23 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$