Climatological Report (Monthly)
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CXUS53 KLOT 011420
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
920 AM CDT MON MAY 01 2023

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF APRIL 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2023

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           83   04/13                          84  04/23
                       04/14
                       04/15
LOWEST            30   04/02                          29  04/17
AVG. MAXIMUM    62.2               59.0     3.2     55.1
AVG. MINIMUM    41.3               40.3     1.0     38.9
MEAN            51.8               49.7     2.0     47.0
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32     0                0.1    -0.1        0
DAYS MIN <= 32     5                6.0    -1.0        5
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        8.68   2013
 MINIMUM        0.14   1899
TOTALS          2.02               3.75   -1.73     5.31
DAILY AVG.      0.07               0.13   -0.06     0.18
DAYS >= .01       14               12.3     1.7       17
DAYS >= .10        8                7.1     0.9       10
DAYS >= .50        1                2.5    -1.5        3
DAYS >= 1.00       0                0.8    -0.8        1
GREATEST
 24 HR. TOTAL   0.88   04/04 TO 04/05               1.58

SNOWFALL (INCHES)
RECORDS
 TOTAL          13.6   1938
TOTALS           0.5                1.3    -0.8      0.4
SINCE 7/1       20.2               38.4   -18.2       MM
SNOWDEPTH AVG.     0                                   0
DAYS >= 1.0        0                0.4    -0.4        0
GREATEST
 SNOW DEPTH        0                                   0  MM
 24 HR TOTAL     0.4R  04/17 TO 04/17                0.2

DEGREE DAYS
HEATING TOTAL    416                468     -52      533
 SINCE 7/1      5253               5745    -492       MM
COOLING TOTAL     25                  8      17        3
 SINCE 1/1        25                 10      15       MM
................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
HIGHEST WIND SPEED/DIRECTION    30/140    DATE  04/04
                                30/240          04/05
                                30/230          04/15
HIGHEST GUST SPEED/DIRECTION    47/210    DATE  04/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.62
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       3
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                4     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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