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000
CXUS53 KLOT 011211
CLAORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
606 AM CST THU JAN 1 2009

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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE YEAR OF 2008...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1871 TO 2008

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH             105   07/24/1934
 LOW              -27   01/20/1985
HIGHEST            94   09/02        MM      MM
LOWEST             -6   12/21        MM      MM
AVG. MAXIMUM     57.6              58.3    -0.7
AVG. MINIMUM     39.8              39.8     0.0
MEAN             48.7              49.1    -0.4
DAYS MAX >= 90      6              17.8   -11.8
DAYS MAX <= 32     56              45.9    10.1
DAYS MIN <= 32    138             128.5     9.5
DAYS MIN <= 0      11              10.9     0.1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        49.35   1983
 MINIMUM        22.22   1962
TOTALS          50.86R            36.27   14.59
DAILY AVG.       0.14              0.10    0.04
DAYS >= .01       138             127.0    11.0
DAYS >= .10        77              69.9     7.1
DAYS >= .50        31              22.5     8.5
DAYS >= 1.00       12               8.1     3.9
GREATEST
 24 HR. TOTAL    6.83   09/13 TO 09/14
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           95.3   1978
 24 HR TOTAL       MM
 SNOW DEPTH        29   01/14/1979
TOTALS           64.9              37.5    27.4
 LIQUID EQUIV    6.49                MM      MM
SINCE 7/1        22.5              10.8    11.7
 LIQUID 7/1      2.25              1.10    1.15
SNOWDEPTH AVG.      1                MM      MM
DAYS >= TRACE      90              30.2    59.8
DAYS >= 1.0        21              11.9     9.1
GREATEST
 SNOW DEPTH         7   12/24
                        02/04
 24 HR TOTAL      4.8   12/16 TO 12/16
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL    6680              6498     182
 SINCE 7/1       2508              2438      70
COOLING TOTAL     828               830      -2
 SINCE 1/1        828               830      -2

FREEZE DATES
EARLIEST                        10/15
LATEST                          04/23
.................................................

WIND (MPH)
AVERAGE WIND SPEED              9.7
HIGHEST WIND SPEED/DIRECTION    38/280    DATE  06/28
HIGHEST GUST SPEED/DIRECTION    54/240    DATE  06/13



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

$$