Climatological Report (Seasonal)
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CXUS53 KLOT 011528
CLSORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
922 AM CST WED MAR 1 2017

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2016 TO 2/28/2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              75   02/27/1976
 LOW              -27   01/20/1985
HIGHEST            70   02/20        MM      MM       62
                        02/18
LOWEST            -13   12/19        MM      MM       -4
AVG. MAXIMUM     37.8              33.6     4.2     37.8
AVG. MINIMUM     23.4              19.1     4.3     24.9
MEAN             30.6              26.4     4.2     31.3
DAYS MAX >= 90      0
DAYS MAX <= 32     28
DAYS MIN <= 32     70
DAYS MIN <= 0       5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        13.79   1950
 MINIMUM         1.60   1931
TOTALS           6.16              5.77    0.39
DAYS >= .01        28
DAYS >= .10        18
DAYS >= .50         3
DAYS >= 1.00        0

SNOWFALL (INCHES)
TOTALS           18.3              28.1    -9.8     16.3

DEGREE_DAYS
HEATING TOTAL    3096              3477    -381
 SINCE 7/1         MM              4734      MM
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
HIGHEST WIND SPEED/DIRECTION    40/260    DATE  01/10
HIGHEST GUST SPEED/DIRECTION    56/260    DATE  01/10


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       8
LIGHT RAIN               30     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                1     SNOW                       7
LIGHT SNOW               24     SLEET                      3
FOG                      46     FOG W/VIS <= 1/4 MILE     11
HAZE                     23

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

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