Climatological Report (Monthly)
Issued by NWS Sterling, VA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
000 CXUS51 KLWX 042146 CLMDCA CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 446 PM EST SAT FEB 4 2017 ................................... ...THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 79 01/26/1950 LOW -14 01/01/1881 HIGHEST 72 01/12 65 7 LOWEST 15 01/08 12 3 AVG. MAXIMUM 48.5 43.4 5.1 42.5 AVG. MINIMUM 35.7 28.6 7.1 27.3 MEAN 42.1 36.0 6.1 DAYS MAX >= 90 0 0.0 0.0 DAYS MAX <= 32 3 4.4 -1.4 DAYS MIN <= 32 8 19.3 -11.3 DAYS MIN <= 0 0 0.1 -0.1 PRECIPITATION (INCHES) RECORD MAXIMUM 7.83 1937 MINIMUM 0.31 1955 TOTALS 2.75 2.81 -0.06 2.68 DAILY AVG. 0.09 0.09 0.00 DAYS >= .01 13 9.6 3.4 DAYS >= .10 6 5.6 0.4 DAYS >= .50 2 2.1 -0.1 DAYS >= 1.00 0 0.6 -0.6 GREATEST 24 HR. TOTAL 0.91 01/02 TO 01/03 SNOWFALL (INCHES) RECORDS TOTAL 31.5 1922 TOTALS 1.4 5.6 -4.2 SINCE 7/1 1.4 8.4 -7.0 SNOWDEPTH AVG. 0 DAYS >= TRACE 5 3.0 2.0 DAYS >= 1.0 1 1.6 -0.6 GREATEST SNOW DEPTH 1 01/30 24 HR TOTAL 1.0 DEGREE_DAYS HEATING TOTAL 701 899 -198 923 SINCE 7/1 1898 2380 -482 1879 COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 0 .............................................................. WIND (MPH) AVERAGE WIND SPEED 9.5 HIGHEST WIND SPEED/DIRECTION 37/060 DATE 01/23 HIGHEST GUST SPEED/DIRECTION 47/050 DATE 01/23 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.80 NUMBER OF DAYS FAIR 2 NUMBER OF DAYS PC 5 NUMBER OF DAYS CLOUDY 24 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 6 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 1 SNOW 1 LIGHT SNOW 5 SLEET 1 FOG 14 FOG W/VIS <= 1/4 MILE 5 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && WASHINGTON DC...RONALD REAGAN NATIONAL AIRPORT... THE MONTHLY AVERAGE TEMPERATURE WAS WELL ABOVE NORMAL. MONTHLY PRECIPITATION WAS NEAR NORMAL. SNOWFALL WAS WELL BELOW NORMAL. THIS WAS THE LEAST SNOWIEST JANUARY IN THE WASHINGTON DC AREA SINCE 2013. IT WAS ALSO THE WARMEST JANUARY SINCE 2006. TWO RECORD DAILY WARM LOW TEMPERATURES WERE SET IN JANUARY. THE LOW OF 51 DEGREES ON THE 12TH BROKE THE OLD RECORD OF 47 SET IN 1890. THE LOW OF 47 DEGREES ON THE 21ST BROKE THE OLD RECORD OF 44 SET IN 1906. CLIMATE RECORDS HAVE BEEN KEPT AT RONALD REAGAN NATIONAL AIRPORT SINCE AUGUST OF 1941. ADDITIONAL TEMPERATURE RECORDS FOR THE WASHINGTON DC AREA 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/BJL

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.