199
CDUS43 KLOT 172139
CLIMDW
CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
439 PM CDT FRI OCT 17 2025
...............................
..THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR OCTOBER 17 2025
VALID TODAY AS OF 0400 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1928 TO 2025
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
TODAY
MAXIMUM 74 2:59 PM 86 1950 63 11 65
MINIMUM 57 5:08 AM 26 1948 46 11 38
AVERAGE 66 54 12 52
PRECIPITATION (IN)
TODAY 0.00 1.48 1988 0.12 -0.12 0.00
MONTH TO DATE 1.59 1.96 -0.37 0.51
SINCE SEP 1 2.15 4.73 -2.58 2.40
SINCE JAN 1 26.97 28.76 -1.79 31.87
DEGREE DAYS
HEATING
TODAY 0 11 -11 13
MONTH TO DATE 46 136 -90 86
SINCE SEP 1 67 195 -128 96
SINCE JUL 1 69 199 -130 96
COOLING
TODAY 1 0 1 0
MONTH TO DATE 63 17 46 16
SINCE SEP 1 267 153 114 235
SINCE JAN 1 1408 1109 299 1358
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 18 HIGHEST WIND DIRECTION S (200)
HIGHEST GUST SPEED 30 HIGHEST GUST DIRECTION S (190)
AVERAGE WIND SPEED 10.5
SKY COVER
AVERAGE SKY COVER 0.7
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
NO SIGNIFICANT WEATHER WAS OBSERVED.
RELATIVE HUMIDITY (PERCENT)
HIGHEST 60 6:00 AM
LOWEST 45 3:00 PM
AVERAGE 53
......................................................
THE CHICAGO-MIDWAY CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 63 87 1950
MINIMUM TEMPERATURE (F) 46 20 1948
SUNRISE AND SUNSET
OCTOBER 17 2025.......SUNRISE 7:06 AM CDT SUNSET 6:06 PM CDT
OCTOBER 18 2025.......SUNRISE 7:07 AM CDT SUNSET 6:04 PM CDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page