089
CXUS53 KLOT 021250 CCA
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1112 AM CDT WED MAY 01 2024

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2024...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             91   04/22/1980
                       04/30/1942
 LOW               7   04/07/1982
HIGHEST           81   04/14                          83  04/13
                       04/16                              04/14
                                                          04/15
LOWEST            32   04/06                          30  04/02
AVG. MAXIMUM    61.6               59.0     2.6     62.2
AVG. MINIMUM    43.8               40.3     3.5     41.3
MEAN            52.7               49.7     3.0     51.8
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     1                6.0    -5.0        5
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.68   2013
 MINIMUM        0.14   1899
TOTALS          3.47               3.75   -0.28     2.02
DAILY AVG.      0.12               0.13   -0.01     0.07
DAYS >= .01       14               12.3     1.7       14
DAYS >= .10       10                7.1     2.9        8
DAYS >= .50        1                2.5    -1.5        1
DAYS >= 1.00       0                0.8    -0.8        0
GREATEST
 24 HR. TOTAL   0.82   04/01 TO 04/02               0.88

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.6   1938
TOTALS             T                1.3    -1.3      0.5
SINCE 7/1       22.2               38.4   -16.2       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL       T   04/02 TO 04/03                0.4
                       04/04 TO 04/04

DEGREE DAYS
HEATING TOTAL    371                468     -97      416
 SINCE 7/1      4701               5745   -1044       MM
COOLING TOTAL      9                  8       1       25
 SINCE 1/1         9                 10      -1       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
HIGHEST WIND SPEED/DIRECTION    30/320    DATE  04/12
                                30/170          04/28
HIGHEST GUST SPEED/DIRECTION    45/250    DATE  04/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       8
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                3     SLEET                      1
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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