These data are preliminary and have not undergone final quality control by the National Climatic Data Center (NCDC). Therefore, these data are subject to revision. Final and certified climate data can be accessed at the NCDC - http://www.ncdc.noaa.gov.

Climatological Report (Daily)


000
CDUS43 KLOT 252135
CLIORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
435 PM CDT SUN APR 25 2021

...................................

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR APRIL 25 2021...
VALID TODAY AS OF 0400 PM LOCAL TIME.

CLIMATE NORMAL PERIOD: 1981 TO 2010
CLIMATE RECORD PERIOD: 1871 TO 2021


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
...................................................................
TEMPERATURE (F)
 TODAY
  MAXIMUM         47   1:00 PM  87    1990  63    -16       47
  MINIMUM         40   5:41 AM  27    1887  42     -2       42
  AVERAGE         44                        52     -8       45

PRECIPITATION (IN)
  TODAY            0.00          1.95 1902   0.12  -0.12     0.19
  MONTH TO DATE    0.63                      2.78  -2.15     1.33
  SINCE MAR 1      1.88                      5.28  -3.40     4.81
  SINCE JAN 1      5.08                      8.80  -3.72     8.38

SNOWFALL (IN)
  TODAY            0.0           2.5  1910   0.0    0.0      0.0
  MONTH TO DATE    T                         1.2   -1.2      4.7
  SINCE MAR 1      1.8                       6.8   -5.0      7.9
  SINCE JUL 1     48.8                      36.3   12.5     34.8

DEGREE DAYS
 HEATING
  TODAY           21                        13      8       20
  MONTH TO DATE  359                       433    -74      436
  SINCE MAR 1    997                      1274   -277     1116
  SINCE JUL 1   5337                      6008   -671     5502

 COOLING
  TODAY            0                         0      0        0
  MONTH TO DATE   14                         0     14        1
  SINCE MAR 1     14                         1     13        1
  SINCE JAN 1     14                         1     13        1
...................................................................


WIND (MPH)
  HIGHEST WIND SPEED    18   HIGHEST WIND DIRECTION    NE (30)
  HIGHEST GUST SPEED    24   HIGHEST GUST DIRECTION    NE (30)
  AVERAGE WIND SPEED    11.4


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.7


WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
  NO SIGNIFICANT WEATHER WAS OBSERVED.


RELATIVE HUMIDITY (PERCENT)
 HIGHEST    80          12:00 AM
 LOWEST     42          12:00 PM
 AVERAGE    61

..........................................................


THE CHICAGO-OHARE CLIMATE NORMALS FOR TOMORROW
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   63        89      1986
 MINIMUM TEMPERATURE (F)   42        27      2006


SUNRISE AND SUNSET
APRIL 25 2021.........SUNRISE   5:56 AM CDT   SUNSET   7:44 PM CDT
APRIL 26 2021.........SUNRISE   5:54 AM CDT   SUNSET   7:45 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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