Climatological Report (Annual)
Issued by NWS Charleston, SC

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000 CXUS52 KCHS 011731 CLACHS CLIMATE REPORT NATIONAL WEATHER SERVICE CHARLESTON SC 1219 PM EST MON JAN 1 2018 ................................... ...THE NORTH CHARLESTON SC CLIMATE SUMMARY FOR THE YEAR OF 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1938 TO 2017 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 105 08/01/1999 LOW 6 01/21/1985 HIGHEST 98 08/16 100 07/13 07/08 LOWEST 22 01/08 23 01/20 AVG. MAXIMUM 78.3 76.2 2.1 78.6 AVG. MINIMUM 58.1 55.6 2.5 58.2 MEAN 68.2 65.9 2.3 68.4 DAYS MAX >= 90 62 55.2 6.8 98 DAYS MAX <= 32 0 0.4 -0.4 0 DAYS MIN <= 32 13 24.4 -11.4 20 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 74.89 2015 MINIMUM 30.31 1954 TOTALS 52.87 51.03 1.84 59.63 DAILY AVG. 0.14 0.14 0.00 0.16 DAYS >= .01 101 112.7 -11.7 101 DAYS >= .10 72 74.4 -2.4 64 DAYS >= .50 36 33.4 2.6 28 DAYS >= 1.00 18 14.8 3.2 19 GREATEST 24 HR. TOTAL 5.51 09/10 TO 09/11 SNOWFALL (INCHES) TOTALS T 0.5 -0.5 T SINCE 7/1 T 0.3 -0.3 0.0 SNOWDEPTH AVG. 0 0 DAYS >= TRACE 4 0.5 3.5 2 DAYS >= 1.0 0 0.1 -0.1 0 DEGREE_DAYS HEATING TOTAL 1398 1977 -579 1608 SINCE 7/1 703 738 -35 530 COOLING TOTAL 2682 2304 378 2965 SINCE 1/1 2682 2304 378 2965 .................................................. WIND (MPH) AVERAGE WIND SPEED 7.9 HIGHEST WIND SPEED/DIRECTION 43/070 DATE 09/11 HIGHEST GUST SPEED/DIRECTION 60/080 DATE 09/11 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 53 RAIN 58 LIGHT RAIN 127 FREEZING RAIN 0 LT FREEZING RAIN 1 HAIL 3 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 1 SLEET 0 FOG 193 FOG W/VIS <= 1/4 MILE 10 HAZE 18 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && 2017 BECOMES 3RD WARMEST YEAR ON RECORD AT THE CHARLESTON INTERNATIONAL AIRPORT. $$

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