Climatological Report (Monthly)
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CXUS53 KLOT 011612
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
957 AM CST SUN NOV 1 2020

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2020...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2020

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            82   10/09        MM      MM       86  10/01
LOWEST             30   10/31        MM      MM       25  10/31
AVG. MAXIMUM     60.9              62.3    -1.4     58.7
AVG. MINIMUM     42.1              42.8    -0.7     43.1
MEAN             51.5              52.5    -1.0     50.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      3               3.5    -0.5        2
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        12.06   1954
 MINIMUM         0.18   1897
TOTALS           3.65              3.15    0.50     6.76
DAILY AVG.       0.12              0.10    0.02     0.22
DAYS >= .01        12              10.2     1.8       13
DAYS >= .10         8               5.9     2.1        9
DAYS >= .50         2               2.1    -0.1        5
DAYS >= 1.00        1               0.6     0.4        2
GREATEST
 24 HR. TOTAL    1.67   10/22 TO 10/22

SNOWFALL (INCHES)
RECORDS
 TOTAL            6.3   1989
TOTALS              T               0.2    -0.2      4.6
SINCE 7/1           T               0.2    -0.2      4.6
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   10/26 TO 10/26
                        10/27 TO 10/27

DEGREE_DAYS
HEATING TOTAL     414               397      17      440
 SINCE 7/1        472               515     -43      451
COOLING TOTAL       4                11      -7       12
 SINCE 1/1       1290               843     447      960
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
RESULTANT WIND SPEED/DIRECTION   3/263
HIGHEST WIND SPEED/DIRECTION    32/020    DATE  10/29
HIGHEST GUST SPEED/DIRECTION    49/200    DATE  10/17


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       5
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

$$



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