815
CDUS43 KLOT 290639
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
139 AM CDT MON SEP 29 2025
...............................
..THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 28 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 80 1:42 PM 92 1953 71 9 72
MINIMUM 62 6:05 AM 29 1942 52 10 65
AVERAGE 71 61 10 69
PRECIPITATION (IN)
YESTERDAY 0.00 3.65 1972 0.10 -0.10 T
MONTH TO DATE 0.49 3.00 -2.51 1.31
SINCE SEP 1 0.49 3.00 -2.51 1.31
SINCE JAN 1 22.94 29.71 -6.77 28.17
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 0 5 -5 0
MONTH TO DATE 32 64 -32 15
SINCE SEP 1 32 64 -32 15
SINCE JUL 1 37 70 -33 15
COOLING
YESTERDAY 6 2 4 4
MONTH TO DATE 147 114 33 179
SINCE SEP 1 147 114 33 179
SINCE JAN 1 1139 986 153 1165
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.6
SKY COVER
AVERAGE SKY COVER 0.1
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 5:00 AM
LOWEST 38 5:00 PM
AVERAGE 61
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THE CHICAGO-OHARE CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 99 1953
MINIMUM TEMPERATURE (F) 52 32 1984
SUNRISE AND SUNSET
SEPTEMBER 29 2025.....SUNRISE 6:47 AM CDT SUNSET 6:36 PM CDT
SEPTEMBER 30 2025.....SUNRISE 6:48 AM CDT SUNSET 6:34 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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