Climatological Report (Monthly)
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916
CXUS53 KLOT 011558
CLMORD

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
931 AM CST SUN NOV 1 2015

...................................
...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015

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            79   10/11        63      16       77  10/27
LOWEST             33   10/18        43     -10       32  10/30
                        10/17

AVG. MAXIMUM     63.2              62.3     0.9     60.6
AVG. MINIMUM     46.2              42.8     3.4     43.4
MEAN             54.7              52.5     2.2     52.0
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        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        12.06   1954
 MINIMUM         0.18   1897

TOTALS           2.23              3.15   -0.92     2.48

DAILY AVG.       0.07              0.10   -0.03     0.08
DAYS >= .01         9              10.2    -1.2       12
DAYS >= .10         6               5.9     0.1        4
DAYS >= .50         1               2.1    -1.1        3
DAYS >= 1.00        0               0.6    -0.6        0
GREATEST
 24 HR. TOTAL    0.82   10/27 TO 10/28

SNOWFALL (INCHES)
RECORDS
 TOTAL            6.3   1989
 SNOW DEPTH        MM   MM

TOTALS            0.0               0.2    -0.2      0.1

SINCE 7/1           T               0.2    -0.2      0.1
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.1    -0.1        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   10/31 TO 10/31

DEGREE_DAYS
HEATING TOTAL     311               397     -86      396
 SINCE 7/1        366               515    -149      507
COOLING TOTAL       1                11     -10        3
 SINCE 1/1        806               843     -37      799
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.9
HIGHEST WIND SPEED/DIRECTION    33/320    DATE  10/15
HIGHEST GUST SPEED/DIRECTION    44/280    DATE  10/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      7

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

$$




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