Climatological Report (Monthly)
Issued by NWS Chicago, IL

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115
CXUS53 KLOT 011351
CLMLOT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
835 AM CDT MON MAY 1 2017

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

...THE ROMEOVILLE  WFO CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              89   04/18/2002
                        04/26/1994
 LOW               16   04/07/1994
HIGHEST            80   04/15        MM      MM       82
LOWEST             31   04/01        MM      MM       22
AVG. MAXIMUM     64.3              60.8     3.5     59.3
AVG. MINIMUM     43.4              39.6     3.8     39.7
MEAN             53.9              50.2     3.7     49.5

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.86   2013
 MINIMUM         1.80   2012
TOTALS           6.88              3.96    2.92     2.90
DAILY AVG.       0.23              0.13    0.10     0.10
DAYS >= .01        13              11.5     1.5       14
DAYS >= .10        12               7.2     4.8        8
DAYS >= .50         4               2.5     1.5        2
DAYS >= 1.00        2               1.2     0.8        0
GREATEST
 24 HR. TOTAL    2.51   04/29 TO 04/29

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS              T               0.5    -0.5      0.4
SINCE 7/1        24.3              32.3    -8.0     22.3
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.3    -0.3
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T   04/10 TO 04/10

DEGREE_DAYS
HEATING TOTAL     339               449    -110      467
 SINCE 7/1       5109              5994    -885     5132
COOLING TOTAL      11                 5       6       11
 SINCE 1/1         11                 5       6       11
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              11.2
HIGHEST WIND SPEED/DIRECTION    35/050    DATE  04/29
HIGHEST GUST SPEED/DIRECTION    43/040    DATE  04/29

AVERAGE RH (PERCENT)     76


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

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