Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 070949
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
549 AM EDT THU JUL 7 2016

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 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             102   06/29/2012
 LOW               36   06/08/1977
HIGHEST            95   06/11        93       2
LOWEST             47   06/09        45       2
AVG. MAXIMUM     83.9              83.8     0.1     82.6
AVG. MINIMUM     62.3              61.0     1.3     64.2
MEAN             73.1              72.4     0.7
DAYS MAX >= 90      2               5.6    -3.6
DAYS MAX <= 32      0               0.0     0.0
DAYS MIN <= 32      0               0.0     0.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.19   1972
 MINIMUM         0.52   1988
TOTALS           6.35              3.98    2.37     7.44
DAILY AVG.       0.21              0.13    0.08
DAYS >= .01         8              10.9    -2.9
DAYS >= .10         5               6.6    -1.6
DAYS >= .50         4               2.6     1.4
DAYS >= 1.00        2               1.0     1.0
GREATEST
 24 HR. TOTAL    2.96   06/15 TO 06/16

DEGREE_DAYS
HEATING TOTAL       3                15     -12       15
 SINCE 7/1       4039              4717    -678     5131
COOLING TOTAL     253               237      16      277
 SINCE 1/1        351               329      22      459
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    36/290    DATE  06/08
HIGHEST GUST SPEED/DIRECTION    45/290    DATE  06/08

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             21
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       5
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      1
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 ABOVE NORMAL...AND RANKED AS THE 9TH HIGHEST
ON RECORD.

THREE WARM TEMPERATURE RECORDS WERE SET THIS JUNE. A RECORD DAILY
HIGH MINIMUM TEMPERATURE OF 70 DEGREES WAS SET ON THE 3RD...BREAKING
THE PREVIOUS RECORD OF 68 SET IN 2010. A SECOND RECORD DAILY HIGH
MINIMUM TEMPERATURE OF 70 DEGREES WAS SET ON THE 4TH...BREAKING THE
PREVIOUS RECORD OF 69 SET IN 1981. A THIRD RECORD DAILY HIGH MINIMUM
TEMPERATURE OF 68 DEGREES WAS TIED ON THE 5TH...TYING THE RECORD
PREVIOUSLY SET IN 2002. A RECORD DAILY HIGH MAXIMUM TEMPERATURE OF
95 DEGREES WAS SET ON THE 11TH...BREAKING THE OLD RECORD OF 93 SET
IN 2000 AND 1986.

TWO DAILY MAXIMUM RAINFALL RECORDS WERE SET THIS JUNE. A RECORD
DAILY MAXIMUM RAINFALL OF 2.82 INCHES WAS SET ON THE 16TH...BREAKING
THE OLD RECORD OF 1.78 SET IN 1974. A RECORD DAILY MAXIMUM RAINFALL
OF 0.59 INCHES WAS SET ON THE 23RD...BREAKING THE OLD RECORD OF 0.55
SET IN 2015.

TWO DAYS THIS JUNE HAD A HIGH TEMPERATURE AT OR GREATER THAN 90
DEGREES...WHICH IS THE FEWEST IN JUNE SINCE 2009.

ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE
NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION.


$$

DFH/RCM


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