Climatological Report (Monthly)
Issued by NWS

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337
CXUS52 KCHS 040318
CLMCXM

CLIMATE REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1115 PM EDT THU JUN 03 2021

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

...THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR THE MONTH OF MAY 2021...

CLIMATE NORMAL PERIOD 1991 TO 2020
CLIMATE RECORD PERIOD 1870 TO 2021

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH            100   05/27/2019
 LOW              45   05/20/1894
HIGHEST           92   05/27                          89  05/04
LOWEST            51   05/13                          54  05/07
AVG. MAXIMUM    79.7               79.0     0.7     78.0
AVG. MINIMUM    67.5               68.0    -0.5     67.4
MEAN            73.6               73.5     0.1     72.7
DAYS MAX >= 90     1                1.5    -0.5        0
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       11.93   1976
 MINIMUM        0.02   2000
TOTALS          1.47               2.58   -1.11     5.71
DAYS >= .01        5                6.8    -1.8        6
DAYS >= .10        2                4.3    -2.3        5
DAYS >= .50        1                1.6    -0.6        3
DAYS >= 1.00       0                0.8    -0.8        2
GREATEST
 24 HR. TOTAL   0.99   05/12


DEGREE DAYS
HEATING TOTAL      5                  6      -1        9
 SINCE 7/1      1287               1619    -332     1242
COOLING TOTAL    279                269      10      253
 SINCE 1/1       464                387      77      462
................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
HIGHEST WIND SPEED/DIRECTION    21/020
HIGHEST GUST SPEED/DIRECTION    28/350



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

&&

RECORDS ESTABLISHED IN DOWNTOWN CHARLESTON DURING THE MONTH:

*MAY 5 - RECORD HIGH MINIMUM TEMPERATURE OF 74 DEGREES
*MAY 12 - RECORD LOW TEMPERATURE OF 53 DEGREES

$$



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