Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 011151
CLMMDW


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
642 AM CDT TUE MAY 1 2018

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

...THE CHICAGO-MIDWAY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1928 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              92   04/30/1942
 LOW               10   04/07/1982
HIGHEST            80   04/30        MM      MM       82
LOWEST             21   04/07        MM      MM       33
AVG. MAXIMUM     50.7              59.2    -8.5     63.9
AVG. MINIMUM     33.9              41.7    -7.8     45.2
MEAN             42.3              50.4    -8.1     54.5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.33   1947
 MINIMUM         0.45   1971
TOTALS           1.43              3.64   -2.21     6.27

DEGREE_DAYS
HEATING TOTAL     674               448     226      326
 SINCE 7/1       5805              5771      34     4746
COOLING TOTAL       0                12     -12       19
 SINCE 1/1          0                13     -13       19
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.4
HIGHEST WIND SPEED/DIRECTION    31/050    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    39/040    DATE  04/14

AVERAGE RH (PERCENT)     60


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

$$


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