Climatological Report (Monthly)
Issued by NWS Chicago, IL

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046
CXUS53 KLOT 011211
CLMRFD


CLIMATE REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
643 AM CDT FRI MAY 1 2015

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

...THE ROCKFORD IL CLIMATE SUMMARY FOR THE MONTH OF APRIL 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1905 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              93   04/10/1930
 LOW                5   04/07/1982
HIGHEST            79   04/17                         80  04/20
LOWEST             26   04/04                         23  04/15
AVG. MAXIMUM     63.7              60.7     3.0     59.6
AVG. MINIMUM     38.2              38.1     0.1     37.4
MEAN             51.0              49.4     1.6     48.5
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.1    -0.1        0
DAYS MIN <= 32      5               7.5    -2.5        8
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.92   1973
 MINIMUM         0.28   1915
TOTALS           3.12              3.35   -0.23     2.87
DAILY AVG.       0.10              0.11   -0.01     0.10
DAYS >= .01         8              11.3    -3.3       13
DAYS >= .10         5               6.4    -1.4        6
DAYS >= .50         1               2.4    -1.4        2
DAYS >= 1.00        1               0.8     0.2        1
GREATEST
 24 HR. TOTAL    2.24   04/09 TO 04/09
                        04/08 TO 04/09
                        04/09 TO 04/09

SNOWFALL (INCHES)
RECORDS
 TOTAL            9.0   1936
TOTALS              T               0.9    -0.9      0.3
SINCE 7/1        35.5              36.7    -1.2     56.9
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.3    -0.3        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   04/22 TO 04/22
                        04/09 TO 04/09

DEGREE_DAYS
HEATING TOTAL     414               476     -62      487
 SINCE 7/1       6796              6340     456     7471
COOLING TOTAL       0                 8      -8        0
 SINCE 1/1          0                 8      -8        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              10.1
HIGHEST WIND SPEED/DIRECTION    36/300    DATE  04/21
HIGHEST GUST SPEED/DIRECTION    51/300    DATE  04/10

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            8
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     55

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      1
FOG                       8     FOG W/VIS <= 1/4 MILE      0
HAZE                      3

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

&&

RECORDS...

MONTHLY...NONE

DAILY
APRIL 9...RECORD DAILY RAINFALL OF 2.24 INCHES.  PREVIOUS RECORD
          WAS 1.10 INCHES SET IN 1943.


$$





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