456
CDUS43 KLOT 170632
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
132 AM CDT FRI OCT 17 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 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 69 1:23 PM 87 1963 63 6 58
MINIMUM 56 6:34 AM 28 1991 45 11 37
AVERAGE 63 54 9 48
PRECIPITATION (IN)
YESTERDAY 0.00 1.41 1878 0.11 -0.11 0.00
MONTH TO DATE 1.55 1.80 -0.25 0.30
SINCE SEP 1 2.04 4.99 -2.95 1.62
SINCE JAN 1 24.49 31.70 -7.21 28.48
SNOWFALL (IN)
YESTERDAY 0.0 T 1943 0.0 0.0 0.0
2009
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE SEP 1 0.0 0.0 0.0 0.0
SINCE JUL 1 0.0 0.0 0.0 0.0
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 2 11 -9 17
MONTH TO DATE 59 141 -82 84
SINCE SEP 1 91 218 -127 99
SINCE JUL 1 96 224 -128 99
COOLING
YESTERDAY 0 0 0 0
MONTH TO DATE 55 12 43 13
SINCE SEP 1 221 128 93 203
SINCE JAN 1 1213 1000 213 1189
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WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION SE (120)
HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION E (110)
AVERAGE WIND SPEED 6.8
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 75 6:00 AM
LOWEST 45 1:00 PM
AVERAGE 60
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 62 86 1950
MINIMUM TEMPERATURE (F) 45 26 1948
SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE 7:07 AM CDT SUNSET 6:06 PM CDT
OCTOBER 18 2025.......SUNRISE 7:08 AM CDT SUNSET 6:05 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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