


Climatological Report (Monthly)
Issued by NWS
Issued by NWS
853 CXUS52 KILM 022102 CLMCRE CLIMATE REPORT NATIONAL WEATHER SERVICE WILMINGTON NC 502 PM EDT THU OCT 02 2025 ................................... ...THE N.MYRTLE BEACH SOUTH CAROLINA CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2025... CLIMATE NORMAL PERIOD 1991 TO 2020 CLIMATE RECORD PERIOD 1931 TO 2025 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE DATE(S) NORMAL ................................................................ TEMPERATURE (F) RECORD HIGH 99 09/04/1944 LOW 45 09/30/1967 HIGHEST 87 09/21 MM MM 88 09/04 LOWEST 57 09/17 MM MM 57 09/10 AVG. MAXIMUM 81.6 83.2 -1.6 82.0 AVG. MINIMUM 65.7 67.7 -2.0 69.0 MEAN 73.7 75.5 -1.8 75.5 DAYS MAX >= 90 0 2.0 -2.0 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 23.16 1999 MINIMUM 0.87 2012 TOTALS 1.35 6.65 -5.30 4.51 DAILY AVG. 0.05 0.22 -0.17 DAYS >= .01 6 10.9 -4.9 DAYS >= .10 3 6.0 -3.0 DAYS >= .50 1 3.3 -2.3 DAYS >= 1.00 0 1.6 -1.6 GREATEST 24 HR. TOTAL 0.90 09/29 TO 09/30 DEGREE DAYS HEATING TOTAL 0 3 -3 0 SINCE 7/1 0 0 0 COOLING TOTAL 268 317 -49 321 SINCE 1/1 2001 1877 124 FREEZE DATES RECORD EARLIEST MM LATEST MM EARLIEST 01/01 LATEST 03/29 ................................................................ WIND (MPH) AVERAGE WIND SPEED 7.2 RESULTANT WIND SPEED/DIRECTION 3/040 HIGHEST WIND SPEED/DIRECTION 21/030 DATE 09/08 HIGHEST GUST SPEED/DIRECTION 30/020 DATE 09/30 SKY COVER AVERAGE SKY COVER 0.28 AVERAGE RH (PERCENT) 77 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 4 MIXED PRECIP MM HEAVY RAIN 1 RAIN 4 LIGHT RAIN 7 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL MM HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET MM FOG 12 FOG W/VIS <= 1/4 MILE 2 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$