Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 020934
CLMDCA

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
534 AM EDT MON JUL 2 2018

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

...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             104   06/29/2012
 LOW               43   06/02/1897
HIGHEST            95   06/19        95       0
LOWEST             56   06/04        54       2
AVG. MAXIMUM     84.5              84.2     0.3     86.4
AVG. MINIMUM     67.8              66.3     1.5     68.2
MEAN             76.2              75.2     1.0
DAYS MAX >= 90      6               6.3    -0.3
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        14.02   2006
 MINIMUM         0.86   1940
TOTALS           5.21              3.78    1.43     1.13
DAILY AVG.       0.17              0.13    0.04
DAYS >= .01        11              10.7     0.3
DAYS >= .10         8               6.1     1.9
DAYS >= .50         4               2.5     1.5
DAYS >= 1.00        2               1.0     1.0
GREATEST
 24 HR. TOTAL    1.65   06/03 TO 06/03

DEGREE_DAYS
HEATING TOTAL       1                 6      -5        1
 SINCE 7/1       3762              4031    -269     3122
COOLING TOTAL     344               314      30      377
 SINCE 1/1        604               448     156      575
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.6
HIGHEST WIND SPEED/DIRECTION    26/060    DATE  06/03
HIGHEST GUST SPEED/DIRECTION    32/070    DATE  06/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            0
NUMBER OF DAYS PC             18
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              M     MIXED PRECIP               0
HEAVY RAIN                M     RAIN                       7
LIGHT RAIN                M     FREEZING RAIN              0
LT FREEZING RAIN          M     HAIL                       0
HEAVY SNOW                M     SNOW                       0
LIGHT SNOW                M     SLEET                      0
FOG                       M     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.

&&

WASHINGTON DC...RONALD REAGAN WASHINGTON NATIONAL AIRPORT...

THE AVERAGE TEMPERATURE WAS SLIGHTLY ABOVE NORMAL. IT WAS THE
WARMEST JUNE SINCE 2017, WHEN THE AVERAGE TEMPERATURE WAS 77.3
DEGREES.

MONTHLY PRECIPITATION WAS 138 PERCENT OF NORMAL. IT WAS THE WETTEST
JUNE SINCE 2015, WHEN 11.94 INCHES OF PRECIPITATION FELL.

A DAILY RECORD HIGH MINIMUM TEMPERATURE OF 77 DEGREES WAS SET ON
JUNE 19TH. THIS BROKE THE OLD RECORD OF 75 DEGREES SET IN 2011.

WEATHER RECORDS FOR THE WASHINGTON DC AREA HAVE BEEN RECORDED AT
WHAT IS NOW RONALD REAGAN WASHINGTON NATIONAL AIRPORT SINCE 1941.
THE OFFICIAL WEATHER RECORD CONSISTS OF THAT DATA BACK TO 1945, AND
OBSERVATIONS TAKEN IN DOWNTOWN WASHINGTON FROM 1871 THROUGH 1944.
TEMPERATURE RECORDS FOR THE WASHINGTON DC AREA EXTEND BACK TO
JANUARY OF 1872, WITH PRECIPITATION RECORDS EXTENDING BACK TO
JANUARY OF 1871 AND SNOWFALL RECORDS EXTENDING BACK TO JANUARY OF
1884.

ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE
NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI)

$$

RCM


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