Climatological Report (Monthly)
Issued by NWS Sterling, VA

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000
CXUS51 KLWX 022159 CCB
CLMIAD

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
410 PM EST WED MAR 1 2017

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2017...

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

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              79   02/25/2000
                        02/24/1985
 LOW              -14   02/18/1979
HIGHEST            77   02/25        66      11
                        02/24
                        02/23
LOWEST             14   02/04         7       7
AVG. MAXIMUM     56.8              46.4    10.4     45.6
AVG. MINIMUM     32.9              26.0     6.9     28.2
MEAN             44.8              36.2     8.6
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32      0               1.9    -1.9
DAYS MIN <= 32     16              21.1    -5.1
DAYS MIN <= 0       0               0.1    -0.1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.27   2003
 MINIMUM         0.25   1978
TOTALS           0.71              2.74   -2.03     3.79
DAILY AVG.       0.03              0.10   -0.07
DAYS >= .01         4               9.0    -5.0
DAYS >= .10         2               5.4    -3.4
DAYS >= .50         0               1.7    -1.7
DAYS >= 1.00        0               0.7    -0.7
GREATEST
 24 HR. TOTAL    0.38   02/28 TO 02/28

SNOWFALL (INCHES)
RECORDS
 TOTAL           46.1   2010
TOTALS            0.6               7.6    -7.0
SINCE 7/1         1.6              18.9   -17.3
SNOWDEPTH AVG.      0
DAYS >= TRACE       5               2.6     2.4
DAYS >= 1.0         0               1.6    -1.6
GREATEST
 SNOW DEPTH         T   02/10
 24 HR TOTAL      0.6

DEGREE_DAYS
HEATING TOTAL     557               806    -249      805
 SINCE 7/1       2893              3590    -697     3091
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.5
HIGHEST WIND SPEED/DIRECTION    44/320    DATE  02/12
HIGHEST GUST SPEED/DIRECTION    58/310    DATE  02/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             13
NUMBER OF DAYS CLOUDY         10

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                3     SLEET                      0
FOG                       4     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

&&

WASHINGTON DULLES INTERNATIONAL AIRPORT...

THE MONTHLY AVERAGE TEMPERATURE RANKED AS THE WARMEST FEBRUARY ON
RECORD. THE PREVIOUS RECORD WAS 42.1 SET IN 1990.

MONTHLY PRECIPITATION WAS WELL BELOW NORMAL, AND RANKED AS THE 7TH
DRIEST ON RECORD.

SNOWFALL WAS WELL BELOW NORMAL.

THERE WERE SIX DAYS WHERE THE TEMPERATURE REACHED OR EXCEEDED 70
DEGREES. THIS TIES FOR THE MOST ON RECORD WITH FEBRUARY 1976.

THERE WERE FIVE DAYS WHERE THE TEMPERATURE DID NOT DROP BELOW 50
DEGREES. THIS IS THE MOST ON RECORD. THE PREVIOUS MOST WAS TWO DAYS
IN 1975 AND 1976.

THREE RECORD DAILY HIGH TEMPERATURES WERE SET THIS FEBRUARY:
HIGH OF 72 DEGREES ON THE 7TH BROKE THE RECORD OF 65 SET IN 2009
HIGH OF 71 DEGREES ON THE 8TH BROKE THE RECORD OF 70 SET IN 1965
HIGH OF 77 DEGREES ON THE 23RD BROKE THE RECORD OF 73 SET IN 1985

FIVE RECORD DAILY WARM LOW TEMPERATURES WERE SET THIS FEBRUARY:
LOW OF 50 DEGREES ON THE 7TH BROKE THE RECORD OF 46 SET IN 1991
LOW OF 52 DEGREES ON THE 8TH BROKE THE RECORD OF 41 SET IN 2009
LOW OF 50 DEGREES ON THE 19TH BROKE THE RECORD OF 46 SET IN 1981
LOW OF 52 DEGREES ON THE 23RD BROKE THE RECORD OF 51 SET IN 1975
LOW OF 53 DEGREES ON THE 24TH TIED THE RECORD PREVIOUSLY SET IN 1985.

CLIMATE RECORDS AT WASHINGTON DULLES INTERNATIONAL AIRPORT BEGAN IN
NOVEMBER OF 1962.

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

$$

DH/SMZ



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