Climatological Report (Monthly)
Issued by NWS Sterling, VA

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000
CXUS51 KLWX 011812
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
212 PM EDT THU SEP 01 2022

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2022...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2022

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            104   08/20/1983
 LOW              38   08/29/1982
HIGHEST           97   08/04         95       2      100
LOWEST            57   08/18         50       7       57
AVG. MAXIMUM    88.4               86.3     2.1     88.9
AVG. MINIMUM    66.7               65.2     1.5     68.3
MEAN            77.5               75.7     1.8     78.6
DAYS MAX >= 90    15                9.3     5.7       16
DAYS MAX <= 32     0                0.0     0.0        0
DAYS MIN <= 32     0                0.0     0.0        0
DAYS MIN <= 0      0                0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM       10.71   1984
 MINIMUM        0.44   1998
TOTALS          2.30               3.53   -1.23     4.93
DAILY AVG.      0.07               0.11   -0.04     0.16
DAYS >= .01       12                9.3     2.7       15
DAYS >= .10        4                5.6    -1.6        8
DAYS >= .50        2                2.2    -0.2        7
DAYS >= 1.00       0                1.1    -1.1        0
GREATEST
 24 HR. TOTAL   0.99   08/09 TO 08/10               0.87
 STORM TOTAL    0.96                                0.85
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1        0.0                0.0     0.0       MM
DAYS >= TRACE      0                0.0     0.0        0
DAYS >= 1.0        0                0.0     0.0        0
GREATEST
 SNOW DEPTH        0                                   0

DEGREE DAYS
HEATING TOTAL      0                  1      -1        0
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    396                334      62      429
 SINCE 1/1      1178               1056     122       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.4
HIGHEST WIND SPEED/DIRECTION    43/290
HIGHEST GUST SPEED/DIRECTION    56/290

SKY COVER
AVERAGE SKY COVER           0.52

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              8     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       1
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      13     FOG W/VIS <= 1/4 MILE      0
HAZE                      1

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

&&

AUGUST AVERAGE TEMPERATURE WAS TWO DEGREES ABOVE NORMAL. AFTER A WETTER THAN NORMAL JULY, AUGUST
WAS DRIER ESPECIALLY THE SECOND HALF.

WEATHER RECORDS FOR THE DULLES VA AREA HAVE BEEN RECORDED AT WHAT IS
NOW WASHINGTON DULLES INTERNATIONAL AIRPORT (KIAD) SINCE 1960. THE
OFFICIAL WEATHER RECORD CONSISTS SOLELY OF DATA RECORDED AT THE
AIRPORT. TEMPERATURE AND PRECIPITATION RECORDS BEGAN IN 1960.
SNOWFALL RECORDS BEGAN IN 1962.

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

$$


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