Climatological Report (Monthly)
Issued by NWS Raleigh/Durham, NC

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000
CXUS52 KRAH 011521
CLMRDU


CLIMATE REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
1117 AM EDT TUE OCT 1 2013

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

...THE RALEIGH-DURHAM INTL AIRPORT CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1887 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH             104   09/06/1954
 LOW               37   09/23/1983
                        09/26/1950
HIGHEST            91   09/11                         92
                        09/10
                        09/01
LOWEST             50   09/28                         48
AVG. MAXIMUM     81.0              82.1    -1.1     80.9
AVG. MINIMUM     60.4              61.7    -1.3     61.3
MEAN             70.7              71.9    -1.2     71.1
DAYS MAX >= 90      4                                  3
DAYS MAX <= 32      0                                  0
DAYS MIN <= 32      0                                  0
DAYS MIN <= 0       0                                  0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        21.79   1999
TOTALS           2.91              4.36   -1.45     7.83
DAYS >= .01         6
DAYS >= .10         5
DAYS >= .50         2
DAYS >= 1.00        1
GREATEST
 24 HR. TOTAL    1.16   09/01 TO 09/01
                        08/31 TO 09/01
                        09/01 TO 09/01

DEGREE_DAYS
HEATING TOTAL      11                20      -9       10
 SINCE 7/1         11                21     -10       10
COOLING TOTAL     189               227     -38      201
 SINCE 1/1       1495              1668    -173
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              4.2
HIGHEST WIND SPEED/DIRECTION    24/100    DATE  09/01
HIGHEST GUST SPEED/DIRECTION    31/270    DATE  09/03

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR            7
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          3

AVERAGE RH (PERCENT)     71

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       3
LIGHT RAIN                5     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      1
HAZE                      0

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

$$

NO RECORDS WERE SET AT RDU IN THE MONTH OF SEPTEMBER.

$$



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