Climatological Report (Annual)
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CXUS53 KLOT 011715
CLAORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
958 AM CST THU JAN 1 2015

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE YEAR OF 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             105   07/24/1934
 LOW              -27   01/20/1985
HIGHEST            91   06/17        MM      MM       96  08/30
                                                          08/27
                                                          07/19
LOWEST            -16   01/06        MM      MM       -6  12/10
AVG. MAXIMUM     56.4              59.1    -2.7     57.8
AVG. MINIMUM     38.6              40.8    -2.2     40.3
MEAN             47.5              49.9    -2.4     49.1
DAYS MAX >= 90      3              14.0   -11.0       13
DAYS MAX <= 32     72              42.7    29.3       51
DAYS MIN <= 32    134             121.8    12.2      138
DAYS MIN <= 0      21               7.1    13.9        7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        50.86   2008
 MINIMUM        22.22   1962
TOTALS          39.47             36.89    2.58    42.09
DAILY AVG.       0.11              0.10    0.01     0.12
DAYS >= .01       131             124.1     6.9      144
DAYS >= .10        72              69.1     2.9       76
DAYS >= .50        26              22.7     3.3       31
DAYS >= 1.00        9               8.3     0.7        8
GREATEST
 24 HR. TOTAL    2.76   MM                          5.42

SNOWFALL (INCHES)
RECORDS
 TOTAL           95.3   1978
 24 HR TOTAL       MM
 SNOW DEPTH        99   MM
TOTALS           69.8              36.3    33.5     44.3
SINCE 7/1         2.9               9.6    -6.7     15.1
SNOWDEPTH AVG.      1                MM      MM        0
DAYS >= TRACE      73              28.0    45.0       74
DAYS >= 1.0        20              11.4     8.6       12
GREATEST
 SNOW DEPTH        14   02/18                         10
 24 HR TOTAL      8.7   MM                           9.2

DEGREE_DAYS
HEATING TOTAL    7027              6339     688     6603
 SINCE 7/1       2458              2411      47     2566
COOLING TOTAL     799               842     -43      933
 SINCE 1/1        799               843     -44      933

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

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           52
NUMBER OF DAYS PC            155
NUMBER OF DAYS CLOUDY        158

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             33     MIXED PRECIP               0
HEAVY RAIN               29     RAIN                      43
LIGHT RAIN              124     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       1
HEAVY SNOW                6     SNOW                      19
LIGHT SNOW               65     SLEET                      6
FOG                     119     FOG W/VIS <= 1/4 MILE     12
HAZE                    112

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

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