Climatological Report (Daily)
Issued by NWS Sterling, VA

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CDUS41 KLWX 160524
CLIIAD


CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1223 AM EST MON JAN 16 2017


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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR JANUARY 15 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2017


WEATHER ITEM   OBSERVED TIME   RECORD YEAR NORMAL DEPARTURE LAST
                VALUE   (LST)  VALUE       VALUE  FROM      YEAR
                                                  NORMAL
..................................................................
TEMPERATURE (F)
 YESTERDAY
  MAXIMUM         47    158 PM  68    2007  42      5       49
  MINIMUM         33    833 AM  -7    1964  24      9       27
  AVERAGE         40                        33      7       38

PRECIPITATION (IN)
  YESTERDAY        0.00          1.56 1995   0.09  -0.09     0.51
  MONTH TO DATE    1.60                      1.25   0.35     1.79
  SINCE DEC 1      3.96                      4.21  -0.25     5.55
  SINCE JAN 1      1.60                      1.25   0.35     1.79

SNOWFALL (IN)
  YESTERDAY        0.0           1.4  1968   0.3   -0.3
  MONTH TO DATE    0.7                       3.0   -2.3
  SINCE JUL 1      0.7                       7.0   -6.3
  SNOW DEPTH       0

DEGREE DAYS
 HEATING
  YESTERDAY       25                        32     -7       27
  MONTH TO DATE  428                       480    -52      458
  SINCE DEC 1   1251                      1362   -111      961
  SINCE JUL 1   1978                      2278   -300     1711

 COOLING
  YESTERDAY        0                         0      0        0
  MONTH TO DATE    0                         0      0        0
  SINCE DEC 1      0                         0      0        2
  SINCE JAN 1      0                         0      0        0
..................................................................


WIND (MPH)
  HIGHEST WIND SPEED    14   HIGHEST WIND DIRECTION     N (360)
  HIGHEST GUST SPEED    21   HIGHEST GUST DIRECTION     N (350)
  AVERAGE WIND SPEED     5.2


SKY COVER
  POSSIBLE SUNSHINE  MM
  AVERAGE SKY COVER 0.9


WEATHER CONDITIONS
 THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
  FOG
  HAZE


RELATIVE HUMIDITY (PERCENT)
 HIGHEST   100           200 AM
 LOWEST     33           200 PM
 AVERAGE    67

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


THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY
                         NORMAL    RECORD    YEAR
 MAXIMUM TEMPERATURE (F)   42        65      1974
 MINIMUM TEMPERATURE (F)   24        -4      1964


SUNRISE AND SUNSET
JANUARY 16 2017.......SUNRISE   726 AM EST   SUNSET   513 PM EST
JANUARY 17 2017.......SUNRISE   726 AM EST   SUNSET   514 PM EST


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




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