Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
659 CXUS51 KLWX 011356 CLMDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 956 AM EDT TUE OCT 01 2024 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 104 09/07/1881 LOW 36 09/23/1904 HIGHEST 87 09/10 92 -5 99 LOWEST 56 09/09 48 8 55 AVG. MAXIMUM 79.7 80.7 -1.0 81.6 AVG. MINIMUM 65.3 64.1 1.2 65.1 MEAN 72.5 72.4 0.1 73.4 DAYS MAX >= 90 0 3.6 -3.6 6 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 17.45 1934 MINIMUM 0.11 2005 TOTALS 2.31 3.93 -1.62 3.60 DAILY AVG. 0.08 0.13 -0.05 0.12 DAYS >= .01 13 8.7 4.3 11 DAYS >= .10 6 5.8 0.2 5 DAYS >= .50 1 2.5 -1.5 3 DAYS >= 1.00 0 1.0 -1.0 1 GREATEST 24 HR. TOTAL 0.59 09/25 TO 09/26 2.01 STORM TOTAL 0.57 1.36 (MM/DD(HH)) SNOWFALL (INCHES) RECORDS TOTAL MM MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 0.0 0.0 0.0 MM DAYS >= TRACE 0 0.0 0.0 0 DAYS >= 1.0 0 0.0 0.0 0 GREATEST SNOW DEPTH 0 0 DEGREE DAYS HEATING TOTAL 0 16 -16 9 SINCE 7/1 0 14 -14 MM COOLING TOTAL 233 238 -5 269 SINCE 1/1 1948 1690 258 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 7.6 HIGHEST WIND SPEED/DIRECTION 29/330 HIGHEST GUST SPEED/DIRECTION 39/340 SKY COVER AVERAGE SKY COVER 0.68 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 4 RAIN 7 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 12 FOG W/VIS <= 1/4 MILE 1 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$