Climatological Report (Monthly)
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543
CXUS53 KLOT 011319
CLMORD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
811 AM CDT TUE AUG 1 2017

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

...THE CHICAGO-OHARE CLIMATE SUMMARY FOR THE MONTH OF JULY 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             105   07/24/1934
 LOW               45   07/07/1983
HIGHEST            93   07/06                         93  07/24
LOWEST             56   07/17                         54  07/02
AVG. MAXIMUM     83.8              84.1    -0.3     84.4
AVG. MINIMUM     65.5              63.9     1.6     66.5
MEAN             74.6              74.0     0.6     75.5
DAYS MAX >= 90      2               5.9    -3.9        6
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.15   2011
 MINIMUM         0.22   1936
TOTALS           7.68              3.70    3.98     6.23
DAILY AVG.       0.25              0.12    0.13     0.20
DAYS >= .01        10               9.8     0.2       11
DAYS >= .10         8               6.0     2.0        9
DAYS >= .50         6               2.3     3.7        6
DAYS >= 1.00        3               1.0     2.0        3
GREATEST
 24 HR. TOTAL    1.77   07/20 TO 07/20           07/23 TO 07/24
                        07/12 TO 07/12                    07/31 TO 07/31
                                                          07/31 TO 07/31

DEGREE_DAYS
HEATING TOTAL       0                 4      -4        0
 SINCE 7/1          0                 4      -4        0
COOLING TOTAL     306               283      23      332
 SINCE 1/1        569               502      67      622
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.0
RESULTANT WIND SPEED/DIRECTION   2/357
HIGHEST WIND SPEED/DIRECTION    35/320    DATE  07/19
HIGHEST GUST SPEED/DIRECTION    43/320    DATE  07/19


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             10     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       8
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                     10

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

$$





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