Climatological Report (Monthly)
Issued by NWS Chicago, IL

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CXUS53 KLOT 011151
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
642 AM CDT TUE MAY 1 2018

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              89   04/18/2002
                        04/26/1994
 LOW               16   04/07/1994
HIGHEST            79   04/30        MM      MM       80
LOWEST             17   04/07        MM      MM       31
AVG. MAXIMUM     51.2              60.8    -9.6     64.3
AVG. MINIMUM     31.6              39.6    -8.0     43.4
MEAN             41.4              50.2    -8.8     53.9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.86   2013
 MINIMUM         1.80   2012
TOTALS           2.12              3.96   -1.84     6.88
DAILY AVG.       0.07              0.13   -0.06     0.23
DAYS >= .01         9              11.5    -2.5       13
DAYS >= .10         5               7.2    -2.2       12
DAYS >= .50         2               2.5    -0.5        4
DAYS >= 1.00        0               1.2    -1.2        2
GREATEST
 24 HR. TOTAL    0.86   04/14 TO 04/14

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS            4.2               0.5     3.7        T
SINCE 7/1        37.7              32.3     5.4     24.3
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         2               0.3     1.7
GREATEST
 SNOW DEPTH         2   04/09
 24 HR TOTAL      1.5   04/09 TO 04/09

DEGREE_DAYS
HEATING TOTAL     701               449     252      339
 SINCE 7/1       6256              5994     262     5109
COOLING TOTAL       0                 5      -5       11
 SINCE 1/1          0                 5      -5       11
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              10.2
HIGHEST WIND SPEED/DIRECTION    30/050    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    41/050    DATE  04/14

AVERAGE RH (PERCENT)     66


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

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