Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
403 CXUS51 KLWX 012138 CLMIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 538 PM EDT WED NOV 01 2023 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2023 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 96 10/02/2019 LOW 15 10/24/1969 HIGHEST 86 10/28 83 3 80 LOWEST 34 10/24 27 7 31 AVG. MAXIMUM 72.5 67.8 4.7 66.7 AVG. MINIMUM 47.8 45.3 2.5 43.3 MEAN 60.2 56.6 3.6 55.0 DAYS MAX >= 90 0 0.2 -0.2 0 DAYS MAX <= 32 0 0.0 0.0 0 DAYS MIN <= 32 0 2.4 -2.4 2 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 9.22 2005 MINIMUM T 1963 TOTALS 0.67 3.65 -2.98 2.24 DAILY AVG. 0.02 0.12 -0.10 0.07 DAYS >= .01 7 8.1 -1.1 8 DAYS >= .10 2 5.1 -3.1 6 DAYS >= .50 0 2.4 -2.4 2 DAYS >= 1.00 0 1.2 -1.2 0 GREATEST 24 HR. TOTAL 0.34 10/14 TO 10/15 0.90 STORM TOTAL 0.32 0.62 (MM/DD(HH)) SNOWFALL (INCHES) RECORDS TOTAL 1.3 1979 TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 T 0.0 0.0 MM DAYS >= TRACE 0 0.0 0.0 MM DAYS >= 1.0 0 0.0 0.0 MM GREATEST SNOW DEPTH 0 0 DEGREE DAYS HEATING TOTAL 190 284 -94 302 SINCE 7/1 206 329 -123 MM COOLING TOTAL 49 22 27 0 SINCE 1/1 1380 1230 150 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 5.6 HIGHEST WIND SPEED/DIRECTION 30/290 30/310 HIGHEST GUST SPEED/DIRECTION 43/310 SKY COVER AVERAGE SKY COVER 0.50 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 0 LIGHT RAIN 10 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 11 FOG W/VIS <= 1/4 MILE 1 HAZE 3 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && OCT 2023 WAS THE SEVENTH WARMEST OCT ON RECORD. THE MONTH HAD TWO STRETCHES OF WELL ABOVE NORMAL TEMPERATURES, ONE AT THE START OF THE MONTH AND ANOTHER ONE AT THE END OF THE MONTH, WITH HIGH TEMPERATURES WELL ABOVE 80 DEGREES. IN TERMS OF PRECIPITATION, OCT 2023 ENDED AS THE FOURTH DRIEST ON RECORD. A PERSISTENT UPPER LEVEL RIDGE RESULTED IN VERY WARM AND DRY CONDITIONS THROUGHOUT THE MONTH. $$ LFR