CDUS42 KCHS 180610 CLICXM CLIMATE REPORT NATIONAL WEATHER SERVICE CHARLESTON SC 210 AM EDT MON MAY 18 2026 ................................... ...THE DOWNTOWN CHARLESTON SC CLIMATE SUMMARY FOR MAY 17 2026... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1870 TO 2026 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 82 230 PM 94 1899 79 3 87 MINIMUM 72 1210 AM 54 1984 68 4 77 AVERAGE 77 74 3 82 PRECIPITATION (IN) YESTERDAY 0.00 1.73 2023 0.07 -0.07 0.00 MONTH TO DATE 1.08 1.23 -0.15 5.33 SINCE MAR 1 1.79 7.22 -5.43 8.36 SINCE JAN 1 5.52 12.34 -6.82 11.03 DEGREE DAYS HEATING YESTERDAY 0 0 0 0 MONTH TO DATE 9 0 9 0 SINCE MAR 1 171 275 -104 172 SINCE JUL 1 1569 1619 -50 1512 COOLING YESTERDAY 12 9 3 17 MONTH TO DATE 94 124 -30 169 SINCE MAR 1 285 237 48 334 SINCE JAN 1 290 242 48 342 ................................................................... WIND (MPH) HIGHEST WIND SPEED 15 HIGHEST WIND DIRECTION S (180) HIGHEST GUST SPEED 18 HIGHEST GUST DIRECTION S (180) AVERAGE WIND SPEED 7.6 .......................................................... THE DOWNTOWN CHARLESTON SC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 79 98 1899 MINIMUM TEMPERATURE (F) 69 52 2009 SUNRISE AND SUNSET MAY 18 2026...........SUNRISE 619 AM EDT SUNSET 814 PM EDT MAY 19 2026...........SUNRISE 618 AM EDT SUNSET 815 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$