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000
CXUS51 KLWX 011954
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
354 PM EDT TUE AUG 01 2023

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

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JULY 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2023

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE
                                          NORMAL
..............................................................
TEMPERATURE (F)
RECORD
 HIGH            105   07/22/2011
 LOW              41   07/01/1988
HIGHEST           98   07/27         96       2       96
                       07/28
                       07/29
LOWEST            61   07/23         52       9       60
AVG. MAXIMUM    91.2               87.6     3.6     88.3
AVG. MINIMUM    69.0               66.8     2.2     67.9
MEAN            80.1               77.2     2.9     78.1
DAYS MAX >= 90    21               12.5     8.5       13
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       11.21   2018
 MINIMUM        0.94   1983
TOTALS          5.09               4.15    0.94     5.23
DAILY AVG.      0.16               0.13    0.03     0.17
DAYS >= .01       14               11.0     3.0       16
DAYS >= .10        9                6.7     2.3       11
DAYS >= .50        5                2.7     2.3        3
DAYS >= 1.00       0                1.3    -1.3        2
GREATEST
 24 HR. TOTAL   0.96   07/19 TO 07/19               2.48
 STORM TOTAL    0.96                                1.48
 (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                  0       0        0
 SINCE 7/1         0                  0       0       MM
COOLING TOTAL    473                378      95      416
 SINCE 1/1       729                722       7       MM
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
HIGHEST WIND SPEED/DIRECTION    38/020
HIGHEST GUST SPEED/DIRECTION    59/020

SKY COVER
AVERAGE SKY COVER           0.53

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM             15     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       7
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      14     FOG W/VIS <= 1/4 MILE      0
HAZE                      9

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

&&

AT DULLES AIRPORT, JUL 2023 WAS THE FOURTH WARMEST JUL ON RECORD WITH AN AVERAGE
TEMPERATURE OF 80.1F DEGREES. ONLY 2020, 2011, AND 2012 WERE WARMER THAN 2023. AS
FOR PRECIPITATION, JUL 2023 WAS A LITTLE ABOVE NORMAL FINISHING AS THE FIFTEENTH
WETTEST ON RECORD.

$$