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000
CXUS53 KLOT 011923 CCA
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1009 AM CDT SAT JUN 1 2013

...................................
...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/31/1934
 LOW               27   05/02/1875

HIGHEST            91   05/14        70      21       97  05/27
LOWEST             36   05/13        48     -12       43  05/14
                                                          05/11

AVG. MAXIMUM     71.2              70.0     1.2     76.5
AVG. MINIMUM     50.7              48.3     2.4     54.6
MEAN             61.0              59.1     1.9     65.6

DAYS MAX >= 90      1               0.5     0.5        5
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.3    -0.3        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.59   1945
 MINIMUM         0.30   1992

TOTALS           4.96              3.68    1.28     4.38

DAILY AVG.       0.16              0.12    0.04     0.14
DAYS >= .01        15              11.6     3.4       10
DAYS >= .10        10               7.2     2.8        6
DAYS >= .50         4               2.2     1.8        3
DAYS >= 1.00        2               0.8     1.2        2
GREATEST
 24 HR. TOTAL    1.80   05/21 TO 05/22

DEGREE_DAYS
HEATING TOTAL     193               225     -32      103
 SINCE 7/1       6131              6292    -161     4893

COOLING TOTAL      76                44      32      128
 SINCE 1/1         84                54      30      171
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    31/240    DATE  05/20
HIGHEST GUST SPEED/DIRECTION    45/220    DATE  05/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM

AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              7     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       9
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      4


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

$$