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000
CXUS53 KLOT 011709
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
1047 AM CST FRI MAR 1 2013

...................................
...THE CHICAGO-OHARE IL CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 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              75   02/27/1976
 LOW              -21   02/09/1899

HIGHEST            52   02/18        35      17       59  02/29
LOWEST              0   02/01        19     -19       10  02/11
AVG. MAXIMUM     33.1              35.3    -2.2     40.2
AVG. MINIMUM     19.1              20.1    -1.0     25.6
MEAN             26.1              27.7    -1.6     32.9

DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     13              10.3     2.7        2
DAYS MIN <= 32     27              24.0     3.0       25
DAYS MIN <= 0       1               1.7    -0.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.98   1881
 MINIMUM         0.06   1877

TOTALS           2.96              1.79    1.17     1.64
DAILY AVG.       0.11              0.06    0.05     0.06
DAYS >= .01        13               8.8     4.2       11
DAYS >= .10         8               4.4     3.6        6
DAYS >= .50         1               0.9     0.1        1
DAYS >= 1.00        1               0.3     0.7        0
GREATEST
 24 HR. TOTAL    1.07   02/07 TO 02/07

SNOWFALL (INCHES)
RECORDS
 TOTAL           29.0   2011

TOTALS           16.1               9.1     7.0      5.6
SINCE 7/1        19.6              29.5    -9.9     19.5
SNOWDEPTH AVG.      1                 3      -2        0
DAYS >= 1.0         6               2.7     3.3        2
GREATEST
 SNOW DEPTH         5   02/27                          3  02/24
 24 HR TOTAL      4.8   MM

DEGREE_DAYS
HEATING TOTAL    1083              1044      39      923
 SINCE 7/1       4402              4734    -332     3973
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
HIGHEST WIND SPEED/DIRECTION    33/270    DATE  02/11
HIGHEST GUST SPEED/DIRECTION    44/270    DATE  02/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       4
LIGHT RAIN                4     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               17     SLEET                      2
FOG                      19     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

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

$$