Climatological Report (Monthly)
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CXUS53 KLOT 011404
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
900 AM CDT WED NOV 1 2017

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 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  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   10/06/1963
 LOW               14   10/25/1887
HIGHEST            83   10/02                         82  10/17
LOWEST             33   10/29                         36  10/25
AVG. MAXIMUM     65.5              62.3     3.2     65.8
AVG. MINIMUM     49.7              42.8     6.9     47.9
MEAN             57.6              52.5     5.1     56.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               3.5    -3.5        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        12.06   1954
 MINIMUM         0.18   1897
TOTALS           8.70              3.15    5.55     3.77
DAILY AVG.       0.28              0.10    0.18     0.12
DAYS >= .01        11              10.2     0.8        8
DAYS >= .10         9               5.9     3.1        6
DAYS >= .50         5               2.1     2.9        3
DAYS >= 1.00        1               0.6     0.4        1
GREATEST
 24 HR. TOTAL    4.19   10/14 TO 10/14


SNOWFALL (INCHES)
RECORDS
 TOTAL            6.3   1989
TOTALS              T               0.2    -0.2      0.0
SINCE 7/1           T               0.2    -0.2      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   10/28 TO 10/28

DEGREE_DAYS
HEATING TOTAL     251               397    -146      266
 SINCE 7/1        293               515    -222      289
COOLING TOTAL      29                11      18       24
 SINCE 1/1        991               843     148     1154
..................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
RESULTANT WIND SPEED/DIRECTION   5/219
HIGHEST WIND SPEED/DIRECTION    38/320    DATE  10/14
HIGHEST GUST SPEED/DIRECTION    45/310    DATE  10/14


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       8
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                     12

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

$$




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