Climatological Report (Monthly)
Issued by NWS

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CXUS53 KLOT 012150 CCA
CLMORD

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE CHICAGO IL
951 AM CDT THU MAY 1 2014

...................................
...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF APRIL 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2014

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            80   04/12                         85  04/30
LOWEST             26   04/16                         25  04/04
                        04/15                             04/03
                                                          04/02

AVG. MAXIMUM     59.2              59.0     0.2     56.3
AVG. MINIMUM     37.9              38.8    -0.9     37.5
MEAN             48.5              48.9    -0.4     46.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      6               6.3    -0.3        6
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.68   2013
 MINIMUM         0.14   1899

TOTALS           2.84              3.38   -0.54     8.68

DAILY AVG.       0.09              0.11   -0.02     0.29
DAYS >= .01        11              12.0    -1.0       14
DAYS >= .10         6               6.4    -0.4        8
DAYS >= .50         3               2.4     0.6        4
DAYS >= 1.00        0               0.8    -0.8        2
GREATEST
 24 HR. TOTAL    0.81   04/28 TO 04/29

SNOWFALL (INCHES)
RECORDS
 TOTAL           13.6   1938

TOTALS            1.4               1.2     0.2      0.1
SINCE 7/1        82.0              36.4    45.6     30.1

SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         1               0.3     0.7        0
GREATEST
 SNOW DEPTH         1   04/15                          0  MM
 24 HR TOTAL      1.4   04/14 TO 04/14

DEGREE_DAYS
HEATING TOTAL     488               492      -4      542
 SINCE 7/1       6928              6067     861     5938
COOLING TOTAL       1                 9      -8        8
 SINCE 1/1          1                10      -9        8
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.4
HIGHEST WIND SPEED/DIRECTION    33/200    DATE  04/12
HIGHEST GUST SPEED/DIRECTION    44/190    DATE  04/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      1
FOG                       6     FOG W/VIS <= 1/4 MILE      2
HAZE                      7


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

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