Climatological Report (Monthly)
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CXUS53 KLOT 011252
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
657 AM CDT SUN JUN 1 2014

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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF MAY 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              98   05/31/1934
 LOW               27   05/02/1875
HIGHEST            89   05/08                         91  05/14
LOWEST             37   05/16                         36  05/13
AVG. MAXIMUM     71.0              70.0     1.0     71.2
AVG. MINIMUM     49.7              48.3     1.4     50.7
MEAN             60.4              59.1     1.3     61.0
DAYS MAX >= 90      0               0.5    -0.5        1
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           4.98              3.68    1.30     4.96
DAILY AVG.       0.16              0.12    0.04     0.16
DAYS >= .01        14              11.6     2.4       15
DAYS >= .10         9               7.2     1.8       10
DAYS >= .50         3               2.2     0.8        4
DAYS >= 1.00        2               0.8     1.2        2
GREATEST
 24 HR. TOTAL    2.09   05/12 TO 05/12

DEGREE_DAYS
HEATING TOTAL     195               225     -30      193
 SINCE 7/1       7123              6292     831     6131
COOLING TOTAL      60                44      16       76
 SINCE 1/1         61                54       7       84
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
HIGHEST WIND SPEED/DIRECTION    49/250    DATE  05/12
HIGHEST GUST SPEED/DIRECTION    55/250    DATE  05/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         15

AVERAGE RH (PERCENT)     60

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      11     FOG W/VIS <= 1/4 MILE      0
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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