Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 021956
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
356 PM EDT MON MAY 2 2016

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              93   04/06/2010
                        04/17/2002
 LOW               17   04/01/1969
HIGHEST            84   04/26        85      -1
LOWEST             24   04/06        25      -1
AVG. MAXIMUM     65.9              66.7    -0.8     66.9
AVG. MINIMUM     42.3              42.1     0.2     42.5
MEAN             54.1              54.4    -0.3
DAYS MAX >= 90      0               0.3    -0.3
DAYS MAX <= 32      0               0.0     0.0
DAYS MIN <= 32      5               3.9     1.1
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.41   2014
 MINIMUM         0.33   1985
TOTALS           1.88              3.47   -1.59     2.46
DAILY AVG.       0.06              0.12   -0.06
DAYS >= .01        12              10.7     1.3
DAYS >= .10         3               6.8    -3.8
DAYS >= .50         1               2.0    -1.0
DAYS >= 1.00        0               0.8    -0.8
GREATEST
 24 HR. TOTAL    0.94   04/06 TO 04/07
                        04/07 TO 04/07
                        04/07 TO 04/08

SNOWFALL (INCHES)
RECORDS
 TOTAL            4.0   1990
TOTALS              T               0.3    -0.3
SINCE 7/1        34.3              22.0    12.3
SNOWDEPTH AVG.      0
DAYS >= TRACE       3               0.3     2.7
DAYS >= 1.0         0               0.1    -0.1
GREATEST
 SNOW DEPTH         0   MM
 24 HR TOTAL        T

DEGREE_DAYS
HEATING TOTAL     335               335       0      305
 SINCE 7/1       3872              4572    -700     5067
COOLING TOTAL      18                17       1        3
 SINCE 1/1         23                20       3        3
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.7
HIGHEST WIND SPEED/DIRECTION    51/300    DATE  04/02
HIGHEST GUST SPEED/DIRECTION    65/310    DATE  04/02

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           11
NUMBER OF DAYS PC             10
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                1     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

&&

DULLES INTERNATIONAL AIRPORT...

THE MONTHLY AVERAGE TEMPERATURE WAS NEAR NORMAL. MONTHLY
PRECIPITATION WAS WELL BELOW NORMAL.

THIS WAS THE DRIEST APRIL SINCE 2012.

A RECORD DAILY HIGH MINIMUM TEMPERATURE OF 64 DEGREES WAS SET ON THE
1ST...BREAKING THE OLD RECORD OF 57 SET IN 2006.

A RECORD DAILY LOW TEMPERATURE OF 24 DEGREES WAS SET ON THE
6TH...TYING THE OLD RECORD PREVIOUSLY SET IN 1966.

A RECORD DAILY HIGH MINIMUM TEMPERATURE OF 62 DEGREES WAS SET ON THE
22ND...TYING THE RECORD PREVIOUSLY SET IN 1977.

$$



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