Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
000 CXUS51 KLWX 011954 CLMIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 354 PM EDT TUE AUG 01 2023 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JULY 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 105 07/22/2011 LOW 41 07/01/1988 HIGHEST 98 07/27 96 2 96 07/28 07/29 LOWEST 61 07/23 52 9 60 AVG. MAXIMUM 91.2 87.6 3.6 88.3 AVG. MINIMUM 69.0 66.8 2.2 67.9 MEAN 80.1 77.2 2.9 78.1 DAYS MAX >= 90 21 12.5 8.5 13 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 11.21 2018 MINIMUM 0.94 1983 TOTALS 5.09 4.15 0.94 5.23 DAILY AVG. 0.16 0.13 0.03 0.17 DAYS >= .01 14 11.0 3.0 16 DAYS >= .10 9 6.7 2.3 11 DAYS >= .50 5 2.7 2.3 3 DAYS >= 1.00 0 1.3 -1.3 2 GREATEST 24 HR. TOTAL 0.96 07/19 TO 07/19 2.48 STORM TOTAL 0.96 1.48 (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 0 0 0 SINCE 7/1 0 0 0 MM COOLING TOTAL 473 378 95 416 SINCE 1/1 729 722 7 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 5.0 HIGHEST WIND SPEED/DIRECTION 38/020 HIGHEST GUST SPEED/DIRECTION 59/020 SKY COVER AVERAGE SKY COVER 0.53 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 15 MIXED PRECIP 0 HEAVY RAIN 5 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 14 FOG W/VIS <= 1/4 MILE 0 HAZE 9 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && AT DULLES AIRPORT, JUL 2023 WAS THE FOURTH WARMEST JUL ON RECORD WITH AN AVERAGE TEMPERATURE OF 80.1F DEGREES. ONLY 2020, 2011, AND 2012 WERE WARMER THAN 2023. AS FOR PRECIPITATION, JUL 2023 WAS A LITTLE ABOVE NORMAL FINISHING AS THE FIFTEENTH WETTEST ON RECORD. $$