Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 030432
CLMBWI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1232 AM EDT MON SEP 3 2018

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

...THE BALTIMORE MD CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             105   08/20/1983
                        08/07/1918
                        08/06/1918
 LOW               45   08/30/1986
HIGHEST            96   08/29        95       1
LOWEST             56   08/24        54       2
AVG. MAXIMUM     87.7              85.1     2.6     82.9
AVG. MINIMUM     69.2              65.2     4.0     64.2
MEAN             78.4              75.1     3.3
DAYS MAX >= 90     12               6.5     5.5
DAYS MAX <= 32      0               0.0     0.0
DAYS MIN <= 32      0               0.0     0.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        18.35   1955
 MINIMUM         0.64   1877
TOTALS           3.84              3.29    0.55     4.60
DAILY AVG.       0.12              0.11    0.01
DAYS >= .01        13               8.6     4.4
DAYS >= .10         8               5.7     2.3
DAYS >= .50         2               2.2    -0.2
DAYS >= 1.00        1               0.7     0.3
GREATEST
 24 HR. TOTAL    1.02   08/21 TO 08/21

DEGREE_DAYS
HEATING TOTAL       0                 1      -1        0
 SINCE 7/1          0                 1      -1        0
COOLING TOTAL     425               316     109      272
 SINCE 1/1       1263              1010     253     1092
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.0
HIGHEST WIND SPEED/DIRECTION    32/280    DATE  08/13
HIGHEST GUST SPEED/DIRECTION    44/230    DATE  08/13

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             17
NUMBER OF DAYS CLOUDY          8

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              M     MIXED PRECIP               0
HEAVY RAIN                M     RAIN                       6
LIGHT RAIN                M     FREEZING RAIN              0
LT FREEZING RAIN          M     HAIL                       0
HEAVY SNOW                M     SNOW                       0
LIGHT SNOW                M     SLEET                      0
FOG                       M     FOG W/VIS <= 1/4 MILE      0
HAZE                      2

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

&&

BALTIMORE MD...BALTIMORE-WASHINGTON INTERNATIONAL THURGOOD
MARSHALL AIRPORT...

THE AVERAGE TEMPERATURE IN AUGUST 2018 WAS WELL ABOVE NORMAL. IT WAS
THE WARMEST AUGUST SINCE 2016, WHEN THE AVERAGE TEMPERATURE WAS 79.1
DEGREES.

MONTHLY PRECIPITATION WAS 117 PERCENT OF NORMAL. HOWEVER, IT WAS THE
DRIEST AUGUST SINCE 2015, WHEN 2.46 INCHES OF PRECIPITATION FELL.

NO DAILY RECORDS WERE SET IN AUGUST 2018.

WEATHER RECORDS FOR THE BALTIMORE MD AREA HAVE BEEN RECORDED AT WHAT
IS NOW BALTIMORE-WASHINGTON INTERNATIONAL THURGOOD MARSHALL AIRPORT
SINCE 1950. THE OFFICIAL WEATHER RECORD CONSISTS OF THAT DATA BACK
TO 1950, AND OBSERVATIONS TAKEN IN DOWNTOWN BALTIMORE FROM 1871
THROUGH 1949. TEMPERATURE RECORDS FOR THE BALTIMORE MD AREA EXTEND
BACK TO JULY OF 1872. PRECIPITATION RECORDS EXTEND BACK TO JANUARY
OF 1871. SNOWFALL RECORDS BEGAN IN MARCH OF 1892.

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

$$

RCM



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