Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 080057
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
857 PM EDT TUE JUL 7 2015

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2015

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            93   06/23        93       0
LOWEST             54   06/29        45       9
AVG. MAXIMUM     82.6              83.8    -1.2     82.3
AVG. MINIMUM     64.2              61.0     3.2     62.5
MEAN             73.4              72.4     1.0
DAYS MAX >= 90      7               5.6     1.4
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           7.44              3.98    3.46     4.62
DAILY AVG.       0.25              0.13    0.12
DAYS >= .01        16              10.9     5.1
DAYS >= .10        12               6.6     5.4
DAYS >= .50         6               2.6     3.4
DAYS >= 1.00        3               1.0     2.0
GREATEST
 24 HR. TOTAL    1.47   06/27 TO 06/27

DEGREE_DAYS
HEATING TOTAL      15                15       0        2
 SINCE 7/1       5131              4717     414     5166
COOLING TOTAL     277               237      40      232
 SINCE 1/1        459               329     130      318
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.2
HIGHEST WIND SPEED/DIRECTION    40/040    DATE  06/18
HIGHEST GUST SPEED/DIRECTION    64/350    DATE  06/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     74

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              9     MIXED PRECIP               0
HEAVY RAIN               10     RAIN                       8
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       2
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      18     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

-  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 AND PRECIPITATION WERE ABOVE NORMAL.
LAST MONTH RANKED AS THE FIFTH WETTEST JUNE ON RECORD.

A RECORD DAILY HIGH MINIMUM TEMPERATURE OF 71 DEGREES WAS SET ON THE
21ST...BREAKING THE OLD RECORD OF 70 SET IN 1997.

TWO MAXIMUM DAILY RAINFALL RECORDS WERE TIED OR BROKEN LAST MONTH.

A DAILY RAINFALL OF 0.55 INCHES ON THE 23RD BROKE THE OLD RECORD OF
0.48 INCHES SET IN 1974.

A DAILY RAINFALL OF 1.47 INCHES ON THE 27TH TIED THE RECORD
PREVIOUSLY SET IN 2006.

$$

DFH/HTS


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