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000
CXUS51 KLWX 051953
CLMBWI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
353 PM EDT WED JUN 5 2013

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

...THE BALTIMORE MD CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2013

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            92   05/30        90       2
LOWEST             34   05/14        39      -5
AVG. MAXIMUM     73.6              73.9    -0.3     79.2
AVG. MINIMUM     53.8              52.0     1.8     58.8
MEAN             63.7              62.9     0.8
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           3.43              3.99   -0.56     1.99
DAILY AVG.       0.11              0.13   -0.02
DAYS >= .01        10              11.4    -1.4
DAYS >= .10         6               6.9    -0.9
DAYS >= .50         4               2.8     1.2
DAYS >= 1.00        0               1.0    -1.0
GREATEST
 24 HR. TOTAL    1.20   05/10 TO 05/11

DEGREE_DAYS
HEATING TOTAL     136               134       2       27
 SINCE 7/1       4486              4749    -263     3586
COOLING TOTAL     105                70      35      160
 SINCE 1/1        131                84      47      192
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              6.8
HIGHEST WIND SPEED/DIRECTION    25/300    DATE  05/10
HIGHEST GUST SPEED/DIRECTION    33/280    DATE  05/25

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             14
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              6     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       4
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      2
HAZE                      7

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

&&

THE MONTHLY AVERAGE TEMPERATURE FOR MAY WAS NEAR NORMAL. IT WAS THE
FIRST TIME SINCE 2009 THAT THE MAY AVERAGE TEMPERATURE FOR BALTIMORE
WAS NOT WELL ABOVE NORMAL.

THE FIRST 90-DEGREE DAY OF THE MONTH DID NOT OCCUR UNTIL THE 30TH...
WHICH IS THE LATEST IN MAY WITHOUT A 90-DEGREE DAY SINCE 2009. THERE
WERE NO 90-DEGREE DAYS RECORDED IN MAY 2009.

THE MINIMUM TEMPERATURE OF 34F DEGREES ON THE 14TH TIED A DAILY
RECORD LOW THAT WAS SET IN 1996. IT WAS ONLY THE 4TH TIME BALTIMORE
RECORDED A MINIMUM TEMPERATURE OF 34F DEGREES OR COLDER THIS LATE IN
THE SPRING. THE OTHER OCCURRENCES WERE 17 MAY 1956 (33F)...21 MAY
2002 (34F) AND 14 MAY 1996 (34F).

RAINFALL THIS MAY WAS BELOW NORMAL. THE LAST TIME IN MAY THAT AT
LEAST AN AN INCH OF RAIN FELL IN A CALENDAR DAY WAS 27 MAY 2010.

$$
JRK