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000
CXUS53 KLOT 012336
CLSORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
612 PM CDT WED JUN 1 2011

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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE SEASON, FROM
3/1/2011 TO 5/31/2011...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1871 TO 2011

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
HIGHEST            90   05/10
LOWEST             21   03/28
AVG. MAXIMUM     55.9              58.0    -2.1
AVG. MINIMUM     38.7              37.9     0.8
MEAN             47.3              47.9    -0.6
DAYS MAX >= 90      1
DAYS MAX <= 32      1
DAYS MIN <= 32     28
DAYS MIN <= 0       0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        17.51   1983
 MINIMUM         2.73   1887
TOTALS          14.79              9.71    5.08
DAYS >= .01        41
DAYS >= .10        29
DAYS >= .50         8
DAYS >= 1.00        4

SNOWFALL (INCHES)
RECORDS
 TOTALS          29.7   1926

TOTALS            1.6               7.6     -5.0
SINCE 7/1        57.9              38.0     19.9

SNOWDEPTH AVG.      0
DAYS >= TRACE       2                MM       MM
DAYS >= 1.0         2                MM       MM

GREATEST
 SNOW DEPTH       1.0   3/6 & 4/18
 24 HR TOTAL      0.7   3/5 TO 3/5

DEGREE_DAYS
HEATING TOTAL    1671              1603      68
 SINCE 7/1       6485              6449      36
COOLING TOTAL      66                58       8
 SINCE 1/1         66                58       8
.................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
HIGHEST WIND SPEED/DIRECTION    33/220    DATE  04/04
HIGHEST GUST SPEED/DIRECTION    43/220    DATE  04/04


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               15     RAIN                      23
LIGHT RAIN               49     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                6     SLEET                      1
FOG                      52     FOG W/VIS <= 1/4 MILE      3
HAZE                     14

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

$$