Climatological Report (Monthly)
Issued by NWS Chicago, IL

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CXUS53 KLOT 011128
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
623 AM CDT MON OCT 1 2018

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1992 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              94   09/20/2018
                        09/13/2005
                        09/08/2002
 LOW               29   09/23/1995
HIGHEST            94R  09/20        MM      MM       93
LOWEST             39   09/29        MM      MM       45
AVG. MAXIMUM     78.6              75.6     3.0     79.2
AVG. MINIMUM     59.2              54.6     4.6     57.4
MEAN             68.9              65.1     3.8     68.3

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.47   2008
 MINIMUM         0.39   2017
TOTALS           2.47              3.13   -0.66     0.39
DAILY AVG.       0.08              0.10   -0.02     0.01
DAYS >= .01         9               7.5     1.5        4
DAYS >= .10         6               4.8     1.2        2
DAYS >= .50         3               1.9     1.1        0
DAYS >= 1.00        0               0.9    -0.9        0
GREATEST
 24 HR. TOTAL    0.52   09/03 TO 09/03

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.0
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL      0.0   09/30 TO 09/30

DEGREE_DAYS
HEATING TOTAL      55                91     -36       49
 SINCE 7/1         55                99     -44       57
COOLING TOTAL     177                94      83      158
 SINCE 1/1       1132               847     285      855
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.3
HIGHEST WIND SPEED/DIRECTION    22/060    DATE  09/08
HIGHEST GUST SPEED/DIRECTION    30/270    DATE  09/21

AVERAGE RH (PERCENT)     73


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

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