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.




$$