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Climatological Report (Seasonal)
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CXUS53 KLOT 012221
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CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
106 PM CST FRI MAR 1 2013

...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2012 TO 2/28/2013...

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

                                          NORMAL

.............................................................
TEMPERATURE (F)
HIGHEST            70   12/03
LOWEST             -1   01/22

AVG. MAXIMUM     37.0              33.6     3.4
AVG. MINIMUM     22.2              19.1     3.1
MEAN             29.6              26.4     3.2


DAYS MAX >= 90      0
DAYS MAX <= 32     30
DAYS MIN <= 32     77
DAYS MIN <= 0       2


PRECIPITATION (INCHES)
RECORD
 MAXIMUM        13.79   1950
 MINIMUM         1.60   1931


TOTALS           8.80              5.77    3.03

DAYS >= .01        34
DAYS >= .10        18
DAYS >= .50         5
DAYS >= 1.00        3


SNOWFALL (INCHES)
TOTALS           19.6              28.1    -8.5     19.5


DEGREE_DAYS
HEATING TOTAL    3152              3477    -325
 SINCE 7/1       4402              4734    -332

COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

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

WIND (MPH)
AVERAGE WIND SPEED              11.0
HIGHEST WIND SPEED/DIRECTION    36/310    DATE  12/21
HIGHEST GUST SPEED/DIRECTION    47/MM     DATE   MM


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               1
HEAVY RAIN                5     RAIN                      13
LIGHT RAIN               24     FREEZING RAIN              1
LT FREEZING RAIN          5     HAIL                       0
HEAVY SNOW                1     SNOW                       6
LIGHT SNOW               39     SLEET                      4
FOG                      51     FOG W/VIS <= 1/4 MILE      7
HAZE                     21


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

$$
National Weather Service National Headquarters
