CXUS51 KLWX 091216 CLMIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 816 AM EDT THU JUL 09 2026 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 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 102 06/29/2012 LOW 36 06/08/1977 HIGHEST 94 06/11 93 1 97 06/12 LOWEST 50 06/03 45 5 43 06/04 AVG. MAXIMUM 85.0 83.1 1.9 85.2 AVG. MINIMUM 62.8 61.9 0.9 64.7 MEAN 73.9 72.5 1.4 74.9 DAYS MAX >= 90 5 5.7 -0.7 10 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 18.19 1972 MINIMUM 0.52 1988 TOTALS 4.29 4.30 -0.01 6.93 DAILY AVG. 0.14 0.14 -0.00 0.23 DAYS >= .01 9 10.8 -1.8 14 DAYS >= .10 6 6.7 -0.7 8 DAYS >= .50 3 2.9 0.1 4 DAYS >= 1.00 1 1.2 -0.2 3 GREATEST 24 HR. TOTAL 1.99 06/28 TO 06/28 2.98 STORM TOTAL 1.99 1.52 (MM/DD(HH)) SNOWFALL (INCHES) RECORDS TOTAL MM MM TOTALS 0.0 0.0 0.0 0.0 SINCE 7/1 13.6 21.0 -7.4 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 1 13 -12 15 SINCE 7/1 4412 4603 -191 MM COOLING TOTAL 278 238 40 321 SINCE 1/1 451 344 107 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 6.4 HIGHEST WIND SPEED/DIRECTION 32/310 HIGHEST GUST SPEED/DIRECTION 67/300 SKY COVER AVERAGE SKY COVER 0.58 AVERAGE RH (PERCENT) 65 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 5 LIGHT RAIN 12 FREEZING RAIN 0LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 10 FOG W/VIS <= 1/4 MILE 0 HAZE 6 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$