Climatological Report (Daily)
Issued by NWS
Issued by NWS
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799
CDUS43 KLOT 290640
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
140 AM CDT TUE SEP 29 2026
...................................
...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR SEPTEMBER 28 2026...
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 73 1:20 PM 92 1953 72 1 81
MINIMUM 50 5:34 AM 29 1942 54 -4 63
AVERAGE 62 63 -1 72
PRECIPITATION (IN)
YESTERDAY 0.00 3.65 1972 0.08 -0.08 0.00
MONTH TO DATE 4.49 2.60 1.89 0.56
SINCE SEP 1 4.49 2.60 1.89 0.56
SINCE JAN 1 36.63 26.63 10.00 25.38
DEGREE DAYS
HEATING
YESTERDAY 3 4 -1 0
MONTH TO DATE 27 49 -22 21
SINCE SEP 1 27 49 -22 21
SINCE JUL 1 27 53 -26 23
COOLING
YESTERDAY 0 2 -2 7
MONTH TO DATE 201 131 70 181
SINCE SEP 1 201 131 70 181
SINCE JAN 1 1172 1087 85 1322
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION NE (50)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NE (50)
AVERAGE WIND SPEED 4.8
SKY COVER
AVERAGE SKY COVER 0.2
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 4:00 AM
LOWEST 53 12:00 PM
AVERAGE 75
..........................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 71 99 1953
MINIMUM TEMPERATURE (F) 53 33 1942
SUNRISE AND SUNSET
SEPTEMBER 29 2026.....SUNRISE 6:46 AM CDT SUNSET 6:36 PM CDT
SEPTEMBER 30 2026.....SUNRISE 6:47 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.
$$