Climatological Report (Monthly)
Issued by NWS Sterling, VA

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000 CXUS51 KLWX 020134 CLMDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 934 PM EDT SAT JUL 1 2017 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF JUNE 2017... CLIMATE NORMAL PERIOD 1981 TO 2010 CLIMATE RECORD PERIOD 1871 TO 2017 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL ............................................................. TEMPERATURE (F) RECORD HIGH 104 06/29/2012 LOW 43 06/02/1897 HIGHEST 95 06/13 95 0 06/12 LOWEST 56 06/08 54 2 AVG. MAXIMUM 86.4 84.2 2.2 85.2 AVG. MINIMUM 68.2 66.3 1.9 67.2 MEAN 77.3 75.2 2.1 DAYS MAX >= 90 8 6.3 1.7 DAYS MAX <= 32 0 0.0 0.0 DAYS MIN <= 32 0 0.0 0.0 DAYS MIN <= 0 0 0.0 0.0 PRECIPITATION (INCHES) RECORD MAXIMUM 14.02 2006 MINIMUM 0.86 1940 TOTALS 1.13 3.78 -2.65 3.68 DAILY AVG. 0.04 0.13 -0.09 DAYS >= .01 5 10.7 -5.7 DAYS >= .10 3 6.1 -3.1 DAYS >= .50 1 2.5 -1.5 DAYS >= 1.00 0 1.0 -1.0 GREATEST 24 HR. TOTAL 0.53 06/19 TO 06/19 DEGREE_DAYS HEATING TOTAL 1 6 -5 0 SINCE 7/1 3122 4031 -909 3340 COOLING TOTAL 377 314 63 345 SINCE 1/1 575 448 127 473 .............................................................. WIND (MPH) AVERAGE WIND SPEED 9.3 HIGHEST WIND SPEED/DIRECTION 40/260 DATE 06/19 HIGHEST GUST SPEED/DIRECTION 52/250 DATE 06/19 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.60 NUMBER OF DAYS FAIR 3 NUMBER OF DAYS PC 20 NUMBER OF DAYS CLOUDY 7 AVERAGE RH (PERCENT) 62 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 3 RAIN 4 LIGHT RAIN 7 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 4 FOG W/VIS <= 1/4 MILE 0 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && WASHINGTON DC...RONALD REAGAN WASHINGTON NATIONAL AIRPORT... THE MONTHLY AVERAGE TEMPERATURE WAS ABOVE NORMAL. MONTHLY PRECIPITATION WAS WELL BELOW NORMAL...AND RANKED AS THE 3RD DRIEST JUNE ON RECORD. JUNE 2017 BEGAN WITH A RECORD DRY PERIOD. ONLY A TRACE OF RAINFALL WAS OBSERVED FROM THE 1ST THROUGH THE 15TH. THIS IS ONLY THE 3RD TIME ON RECORD NO MEASURABLE RAINFALL WAS OBSERVED DURING THE FIRST HALF OF JUNE (ALSO HAPPENED IN 1976 AND 1967)...AND THE SECOND LONGEST STREAK OF CONSECUTIVE DAYS WITHOUT MEASURABLE RAINFALL IN JUNE (LONGEST STREAK WAS 17 DAYS JUNE 1-17 1967). A RECORD DAILY HIGH TEMPERATURE OF 95 WAS SET ON THE 12TH...TYING THE RECORD PREVIOUSLY SET IN 2002...1986...1942...1938...1914 AND 1880. A RECORD DAILY WARM LOW TEMPERATURE OF 75 DEGREES WAS SET ON THE 13TH...TYING THE RECORD PREVIOUSLY SET IN 2015...2005...1984 AND 1981. CLIMATE RECORDS HAVE BEEN KEPT AT RONALD REAGAN WASHINGTON NATIONAL AIRPORT SINCE AUGUST OF 1941. ADDITIONAL TEMPERATURE RECORDS FOR THE WASHINGTON DC AREA OBSERVED DOWNTOWN EXTEND BACK TO JANUARY OF 1872. PRECIPITATION RECORDS EXTEND BACK TO JANUARY OF 1871. SNOWFALL RECORDS BEGAN IN JANUARY OF 1884. ALL CLIMATE DATA ARE CONSIDERED PRELIMINARY UNTIL REVIEWED BY THE NATIONAL CENTERS FOR ENVIRONMENTAL INFORMATION (NCEI). $$ DH/HTS

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