Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
000 CXUS51 KLWX 030002 CLMDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 802 PM EDT MON OCT 02 2023 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1871 TO 2023 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 99 09/05 92 7 91 LOWEST 55 09/28 48 7 51 AVG. MAXIMUM 81.6 80.7 0.9 81.6 AVG. MINIMUM 65.1 64.1 1.0 63.8 MEAN 73.4 72.4 1.0 72.7 DAYS MAX >= 90 6 3.6 2.4 2 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 3.60 3.93 -0.33 2.27 DAILY AVG. 0.12 0.13 -0.01 0.08 DAYS >= .01 11 8.7 2.3 8 DAYS >= .10 5 5.8 -0.8 4 DAYS >= .50 3 2.5 0.5 2 DAYS >= 1.00 1 1.0 0.0 0 GREATEST 24 HR. TOTAL 2.01 09/23 TO 09/24 0.91 STORM TOTAL 1.36 0.86 (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 9 16 -7 17 SINCE 7/1 9 14 -5 MM COOLING TOTAL 269 238 31 258 SINCE 1/1 1635 1690 -55 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 8.0 HIGHEST WIND SPEED/DIRECTION 30/100 30/040 HIGHEST GUST SPEED/DIRECTION 43/060 SKY COVER AVERAGE SKY COVER 0.61 AVERAGE RH (PERCENT) 67 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 5 LIGHT RAIN 14 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 7 FOG W/VIS <= 1/4 MILE 0 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && AFTER RECORD HEAT TO BEGIN THE MONTH, SEPTEMBER WOUND UP JUST ABOUT 1 DEGREE ABOVE NORMAL. THUNDERSTORMS JUST AFTER THE EARLY MONTH HEAT BROKE, AND THE REMNANTS OF TROPICAL STORM OPHELIA LATE IN THE MONTH WERE NOT ENOUGH TO KEEP PRECIPITATION FROM BEING JUST BELOW NORMAL. $$ DHOF