Climatological Report (Monthly)
Issued by NWS Sterling, VA

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CXUS51 KLWX 042047
CLMBWI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
445 PM EDT THU JUN 4 2015

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

...THE BALTIMORE MD CLIMATE SUMMARY FOR THE MONTH OF MAY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/30/2011
                        05/30/1991
                        05/19/1962
 LOW               32   05/11/1966
HIGHEST            91   05/28        90       1
LOWEST             43   05/02        39       4
AVG. MAXIMUM     80.6              73.9     6.7     75.6
AVG. MINIMUM     57.6              52.0     5.6     54.1
MEAN             69.1              62.9     6.2
DAYS MAX >= 90      2               1.2     0.8
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         8.71   1989
 MINIMUM         0.37   1986
TOTALS           2.10              3.99   -1.89     3.35
DAILY AVG.       0.07              0.13   -0.06
DAYS >= .01         7              11.4    -4.4
DAYS >= .10         4               6.9    -2.9
DAYS >= .50         1               2.8    -1.8
DAYS >= 1.00        1               1.0     0.0
GREATEST
 24 HR. TOTAL    1.69   05/18 TO 05/19

DEGREE_DAYS
HEATING TOTAL      48               134     -86       74
 SINCE 7/1       4950              4749     201     5004
COOLING TOTAL     184                70     114       78
 SINCE 1/1        189                84     105       85
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              5.5
HIGHEST WIND SPEED/DIRECTION    26/310    DATE  05/12
HIGHEST GUST SPEED/DIRECTION    37/310    DATE  05/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             23
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       4
LIGHT RAIN               13     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                      5

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

&&
THE MONTHLY AVERAGE TEMPERATURE WAS WELL ABOVE NORMAL. MONTHLY
PRECIPITATION WAS WELL BELOW NORMAL.

PRELIMINARY DATA INDICATES THAT LAST MONTH WAS THE 7TH WARMEST MAY
ON RECORD.

BALTIMORE HAD ITS FIRST 90 DEGREE DAY OF 2015 ON THE 28TH WHEN THE
TEMPERATURE REACHED 91 DEGREES. THIS WAS ALSO THE FIRST DAY AT OR
ABOVE 90 DEGREES SINCE SEPTEMBER 6TH 2014 WHEN THE TEMPERATURE
REACHED 93 DEGREES.

DESPITE THE BELOW NORMAL PRECIPITATION FOR THE MONTH...A RECORD
DAILY MAXIMUM RAINFALL OF 1.54 INCHES WAS SET ON THE 18TH. THIS
BROKE THE OLD RECORD OF 1.47 INCHES SET IN 1879.

$$
SMZ/DH


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