000
CXUS53 KLOT 011909 CCA
CLAORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
110 PM CST SAT JAN 1 2011

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

...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE YEAR OF 2010...

CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1871 TO 2010

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   08/29        MM      MM
                        07/23
LOWEST             -1   01/03        MM      MM
AVG. MAXIMUM     60.1              58.3     1.8
AVG. MINIMUM     42.8              39.8     3.0
MEAN             51.5              49.1     2.4
DAYS MAX >= 90     21              17.8     3.2
DAYS MAX <= 32     64              45.9    18.1
DAYS MIN <= 32    120             128.5    -8.5
DAYS MIN <= 0       2              10.9    -8.9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        50.86   2008
 MINIMUM        22.22   1962
TOTALS          37.61             36.27    1.34
DAILY AVG.       0.10              0.10    0.00
DAYS >= .01       116             127.0   -11.0
DAYS >= .10        70              69.9     0.1
DAYS >= .50        22              22.5    -0.5
DAYS >= 1.00        6               8.1    -2.1
GREATEST
 24 HR. TOTAL    4.70   07/24
 STORM TOTAL       MM
 (MM/DD(HH))            MM

SNOWFALL (INCHES)
RECORDS
 TOTAL           95.3   1978
 24 HR TOTAL       MM
 SNOW DEPTH        MM   MM
TOTALS           49.6              37.5    12.1
 LIQUID EQUIV    4.96                MM      MM
SINCE 7/1        16.2              10.8     5.4
 LIQUID 7/1      1.62              1.10    0.52
SNOWDEPTH AVG.      1                MM      MM
DAYS >= TRACE      60              30.2    29.8
DAYS >= 1.0        12              11.9     0.1
GREATEST
 SNOW DEPTH         9   02/10
 24 HR TOTAL     12.6   02/09 TO 02/09
 STORM TOTAL       MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL    5991              6498    -507
 SINCE 7/1       2362              2438     -76
COOLING TOTAL    1181               830     351
 SINCE 1/1       1181               830     351

FREEZE DATES
EARLIEST                        10/15
LATEST                          04/23

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

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    47/310    DATE  04/05
HIGHEST GUST SPEED/DIRECTION    68/320    DATE  04/05



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

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