905
CXUS51 KLWX 091216
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
816 AM EDT THU JUL 09 2026

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 2026...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2026

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           94   06/11         93       1       97
                       06/12
LOWEST            50   06/03         45       5       43
                       06/04
AVG. MAXIMUM    85.0               83.1     1.9     85.2
AVG. MINIMUM    62.8               61.9     0.9     64.7
MEAN            73.9               72.5     1.4     74.9
DAYS MAX >= 90     5                5.7    -0.7       10
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       18.19   1972
 MINIMUM        0.52   1988
TOTALS          4.29               4.30   -0.01     6.93
DAILY AVG.      0.14               0.14   -0.00     0.23
DAYS >= .01        9               10.8    -1.8       14
DAYS >= .10        6                6.7    -0.7        8
DAYS >= .50        3                2.9     0.1        4
DAYS >= 1.00       1                1.2    -0.2        3
GREATEST
 24 HR. TOTAL   1.99   06/28 TO 06/28               2.98
 STORM TOTAL    1.99                                1.52
 (MM/DD(HH))

SNOWFALL (INCHES)
RECORDS
 TOTAL            MM   MM
TOTALS           0.0                0.0     0.0      0.0
SINCE 7/1       13.6               21.0    -7.4       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      1                 13     -12       15
 SINCE 7/1      4412               4603    -191       MM
COOLING TOTAL    278                238      40      321
 SINCE 1/1       451                344     107       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.4
HIGHEST WIND SPEED/DIRECTION    32/310
HIGHEST GUST SPEED/DIRECTION    67/300

SKY COVER
AVERAGE SKY COVER           0.58

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       5
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      10     FOG W/VIS <= 1/4 MILE      0
HAZE                      6

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

$$