Climatological Report (Seasonal)
Issued by NWS

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CXUS53 KLOT 011452
CLSORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
845 AM CST THU MAR 1 2018

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE SEASON, FROM
12/1/2017 TO 2/28/2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

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            66   02/20        MM      MM       70
LOWEST             -9   01/02        MM      MM      -13
                        01/01
AVG. MAXIMUM     34.7              33.6     1.1     37.8
AVG. MINIMUM     19.0              19.1    -0.1     23.4
MEAN             26.9              26.4     0.5     30.6
DAYS MAX >= 90      0
DAYS MAX <= 32     37
DAYS MIN <= 32     73
DAYS MIN <= 0      11

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        13.79   1950
 MINIMUM         1.60   1931
TOTALS           6.77              5.77    1.00
DAYS >= .01        36
DAYS >= .10        14
DAYS >= .50         4
DAYS >= 1.00        1

SNOWFALL (INCHES)
TOTALS           30.2              28.1     2.1     18.3

DEGREE_DAYS
HEATING TOTAL    3415              3477     -62
 SINCE 7/1         MM              4734      MM
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.9
HIGHEST WIND SPEED/DIRECTION    38/250    DATE  12/05
HIGHEST GUST SPEED/DIRECTION    50/280    DATE  12/05


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       7
LIGHT RAIN               19     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                1     SNOW                       5
LIGHT SNOW               33     SLEET                      2
FOG                      43     FOG W/VIS <= 1/4 MILE      6
HAZE                     27

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

$$



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