Climatological Report (Annual)
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CXUS53 KLOT 011456
CLAORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
824 AM CST WED JAN 1 2014

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 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             105   07/24/1934
 LOW              -27   01/20/1985
HIGHEST            96   08/30                        103  07/06
                        08/27                             07/05
                        07/19
LOWEST             -6   12/10                          5  01/20
                                                          01/15
                                                          01/19
AVG. MAXIMUM     57.8              59.1    -1.3     63.8
AVG. MINIMUM     40.3              40.8    -0.5     45.1
MEAN             49.1              49.9    -0.8     54.4
DAYS MAX >= 90     13              14.0    -1.0       46
DAYS MAX <= 32     51              42.7     8.3       17
DAYS MIN <= 32    138             121.8    16.2      100
DAYS MIN <= 0       7               7.1    -0.1        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        50.86   2008
 MINIMUM        22.22   1962
TOTALS          42.09             36.89    5.20    26.91
DAILY AVG.       0.12              0.10    0.02     0.07
DAYS >= .01       144             124.1    19.9      109
DAYS >= .10        76              69.1     6.9       65
DAYS >= .50        31              22.7     8.3       18
DAYS >= 1.00        8               8.3    -0.3        4
GREATEST
 24 HR. TOTAL    5.42   04/17 TO 04/18              1.65

SNOWFALL (INCHES)
RECORDS
 TOTAL           95.3   1978
 24 HR TOTAL       MM
 SNOW DEPTH        99   MM
TOTALS           44.3              36.3     8.0     19.0
SINCE 7/1        15.1               9.7     5.4      0.9
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      74              28.0    46.0       43
DAYS >= 1.0        12              11.4     0.6        4
GREATEST
 SNOW DEPTH        10   03/06                          5
 24 HR TOTAL      9.2   03/05 TO 03/05               5.4

DEGREE_DAYS
HEATING TOTAL    6603              6339     264     5065
 SINCE 7/1       2566              2411     155     2137
COOLING TOTAL     933               842      91     1324
 SINCE 1/1        933               843      90     1324

FREEZE DATES
RECORD
 EARLIEST     09/22/1995
 LATEST       05/25/1992
EARLIEST                        10/15
LATEST                          04/23
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.6
HIGHEST WIND SPEED/DIRECTION    43/250    DATE  11/17
HIGHEST GUST SPEED/DIRECTION    58/260    DATE  11/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           71
NUMBER OF DAYS PC            151
NUMBER OF DAYS CLOUDY        143

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             42     MIXED PRECIP               0
HEAVY RAIN               41     RAIN                      60
LIGHT RAIN              136     FREEZING RAIN              1
LT FREEZING RAIN          8     HAIL                       4
HEAVY SNOW                2     SNOW                      14
LIGHT SNOW               64     SLEET                      7
FOG                     145     FOG W/VIS <= 1/4 MILE     10
HAZE                     45

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

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