Climatological Report (Monthly)
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000
CXUS53 KLOT 011249
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
630 AM CST WED FEB 1 2017

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              67   01/25/1950
 LOW              -27   01/20/1985
HIGHEST            59   01/21                         48  01/31
LOWEST              0   01/07                         -4  01/18
                        01/06
AVG. MAXIMUM     34.6              31.0     3.6     31.7
AVG. MINIMUM     23.0              16.5     6.5     17.6
MEAN             28.8              23.8     5.0     24.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     10              16.1    -6.1       15
DAYS MIN <= 32     23              28.0    -5.0       27
DAYS MIN <= 0       2               3.8    -1.8        5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.84   1916
 MINIMUM         0.10   1981
TOTALS           2.87              1.73    1.14     0.84
DAILY AVG.       0.09              0.06    0.03     0.03
DAYS >= .01        13              10.5     2.5       11
DAYS >= .10         7               4.7     2.3        4
DAYS >= .50         1               0.9     0.1        0
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    1.38   01/16 TO 01/17


SNOWFALL (INCHES)
RECORDS
 TOTAL           42.5   1918
TOTALS            0.6              10.8   -10.2      6.3
SINCE 7/1        18.3              20.4    -2.1     22.0
SNOWDEPTH AVG.      0                 3      -3        1
DAYS >= 1.0         0               3.7    -3.7
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.2   01/09 TO 01/09
                        01/12 TO 01/12

DEGREE_DAYS
HEATING TOTAL    1117              1279    -162     1239
 SINCE 7/1       3177              3690    -513     3012
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
RESULTANT WIND SPEED/DIRECTION   5/274
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              2     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                0     SNOW                       3
LIGHT SNOW                9     SLEET                      2
FOG                      21     FOG W/VIS <= 1/4 MILE      5
HAZE                      8

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

&&
DAILY RECORDS ESTABLISHED DURING JANUARY 2017
* SET RECORD DAILY PRECIPITATION ON JANUARY 16TH WITH 0.90 INCHES.

MONTHLY RECORDS ESTABLISHED DURING JANUARY 2017
* 6TH LEAST SNOWIEST JANUARY ON RECORD WITH 0.6 INCHES SINCE 1885

$$





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