141
CDUS43 KLOT 160634
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
134 AM CDT THU OCT 16 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR OCTOBER 15 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 61 1:04 AM 88 1947 63 -2 51
MINIMUM 55 10:06 AM 28 1876 46 9 41
AVERAGE 58 54 4 46
PRECIPITATION (IN)
YESTERDAY 0.19 1.66 1967 0.12 0.07 0.27
MONTH TO DATE 1.55 1.69 -0.14 0.30
SINCE SEP 1 2.04 4.88 -2.84 1.62
SINCE JAN 1 24.49 31.59 -7.10 28.48
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 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 7 11 -4 19
MONTH TO DATE 57 130 -73 67
SINCE SEP 1 89 207 -118 82
SINCE JUL 1 94 213 -119 82
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 16 HIGHEST WIND DIRECTION NE (40)
HIGHEST GUST SPEED 23 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 10.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 93 10:00 AM
LOWEST 62 1:00 AM
AVERAGE 78
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 87 1963
MINIMUM TEMPERATURE (F) 45 28 1991
SUNRISE AND SUNSET
OCTOBER 16 2025.......SUNRISE 7:06 AM CDT SUNSET 6:08 PM CDT
OCTOBER 17 2025.......SUNRISE 7:07 AM CDT SUNSET 6:06 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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