Climatological Report (Monthly)
Issued by NWS Chicago, IL

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000
CXUS53 KLOT 011130
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
614 AM CDT THU JUN 1 2017

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF MAY 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1992 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              96   05/27/2012
 LOW               12   05/12/1994
HIGHEST            86   05/16        MM      MM       89
LOWEST             35   05/03        MM      MM       35
AVG. MAXIMUM     68.5              71.1    -2.6     71.1
AVG. MINIMUM     48.1              49.9    -1.8     50.0
MEAN             58.3              60.5    -2.2     60.6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.17   2000
 MINIMUM         0.30   1992
TOTALS           4.71              4.26    0.45     3.53
DAILY AVG.       0.15              0.14    0.01     0.11
DAYS >= .01        14              12.8     1.2       14
DAYS >= .10        11               7.7     3.3        8
DAYS >= .50         3               3.1    -0.1        3
DAYS >= 1.00        0               1.3    -1.3        0
GREATEST
 24 HR. TOTAL    0.91   05/09 TO 05/09

DEGREE_DAYS
HEATING TOTAL     227               192      35      213
 SINCE 7/1       5336              6186    -850     5345
COOLING TOTAL      26                53     -27       82
 SINCE 1/1         37                58     -21       93
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.6
HIGHEST WIND SPEED/DIRECTION    32/200    DATE  05/17
HIGHEST GUST SPEED/DIRECTION    45/200    DATE  05/17

AVERAGE RH (PERCENT)     75


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

$$




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