Climatological Report (Daily)
Issued by NWS
Issued by NWS
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CDUS43 KLOT 282131
CLIORD
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
431 PM CDT SUN SEP 28 2025
...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR SEPTEMBER 28 2025...
VALID TODAY AS OF 0400 PM LOCAL TIME.
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)
TODAY
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)
TODAY 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)
TODAY 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
TODAY 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
TODAY 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 12 HIGHEST WIND DIRECTION NE (60)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION E (80)
AVERAGE WIND SPEED 6.2
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 84 5:00 AM
LOWEST 43 3:00 PM
AVERAGE 64
..........................................................
THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 70 99 1953
MINIMUM TEMPERATURE (F) 52 32 1984
SUNRISE AND SUNSET
SEPTEMBER 28 2025.....SUNRISE 6:46 AM CDT SUNSET 6:38 PM CDT
SEPTEMBER 29 2025.....SUNRISE 6:47 AM CDT SUNSET 6:36 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$