CXUS51 KLWX 011221 CLMIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 821 AM EDT WED APR 01 2026 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF MARCH 2026... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2026 WEATHER OBSERVED NORMAL DEPART LAST YEAR'S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 89 03/30/1998 03/12/1990 LOW 03/04/2014 03/15/1993 HIGHEST 86 03/11 77 9 83 03/22 LOWEST 23 03/18 15 8 20 AVG. MAXIMUM 63.7 54.8 8.9 63.3 AVG. MINIMUM 38.3 33.6 4.7 38.4 MEAN 51.0 44.2 6.8 50.8 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.6 -0.6 0 DAYS MIN <= 32 10 15.2 -5.2 9 DAYS MIN <= 0 0 0.1 -0.1 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.65 1973 MINIMUM 0.07 2006 TOTALS 2.85 3.50 -0.65 1.42 DAILY AVG. 0.09 0.11 -0.02 0.05 DAYS >= .01 15 11.0 4.0 6 DAYS >= .10 6 6.7 -0.7 4 DAYS >= .50 1 2.2 -1.2 1 DAYS >= 1.00 0 0.9 -0.9 0 GREATEST 24 HR. TOTAL 0.98 03/15 TO 03/16 0.63 STORM TOTAL 0.91 0.63 (MM/DD(HH)) SNOWFALL (INCHES) RECORDS TOTAL 15.5 1993 TOTALS 1.0 3.9 -2.9 0.0 SINCE 7/1 13.6 20.9 -7.3 MM DAYS >= TRACE 4 1.8 2.2 0 DAYS >= 1.0 0 1.1 -1.1 0 GREATEST SNOW DEPTH MM 0 DEGREE DAYS HEATING TOTAL 442 647 -205 450 SINCE 7/1 4071 4157 -86 MM COOLING TOTAL 16 2 14 17 SINCE 1/1 16 2 14 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 8.7 HIGHEST WIND SPEED/DIRECTION 47/300 HIGHEST GUST SPEED/DIRECTION 66/300 SKY COVER AVERAGE SKY COVER 0.64 AVERAGE RH (PERCENT) 63 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 1 RAIN 2 LIGHT RAIN 15 FREEZING RAIN 0 LT FREEZING RAIN 1 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 2 SLEET 0 FOG 12 FOG W/VIS <= 1/4 MILE 4 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$