Climatological Report (Monthly)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
904 CXUS51 KLWX 010929 CLMIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 429 AM EST THU FEB 01 2024 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2024... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2024 WEATHER OBSERVED NORMAL DEPART LAST YEAR`S VALUE DATE(S) VALUE FROM VALUE NORMAL .............................................................. TEMPERATURE (F) RECORD HIGH 79 01/26/2024 LOW -18 01/22/1984 HIGHEST 79R 01/26 63 16 69 LOWEST 7 01/22 2 5 23 AVG. MAXIMUM 45.5 42.6 2.9 50.9 AVG. MINIMUM 28.3 25.2 3.1 33.8 MEAN 36.9 33.9 3.0 42.3 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 6 5.6 0.4 0 DAYS MIN <= 32 21 24.3 -3.3 15 DAYS MIN <= 0 0 0.3 -0.3 0 PRECIPITATION (INCHES) RECORD MAXIMUM 6.61 1979 MINIMUM 0.40 1981 TOTALS 6.00 2.94 3.06 1.36 DAILY AVG. 0.19 0.09 0.10 0.04 DAYS >= .01 12 10.3 1.7 10 DAYS >= .10 9 5.9 3.1 5 DAYS >= .50 4 2.0 2.0 0 DAYS >= 1.00 2 0.6 1.4 0 GREATEST 24 HR. TOTAL 1.76 01/09 TO 01/09 0.46 STORM TOTAL 1.76 0.46 (MM/DD(HH)) SNOWFALL (INCHES) RECORDS TOTAL 30.9 1996 TOTALS 9.5 6.9 2.6 T SINCE 7/1 10.0 10.0 0.0 MM DAYS >= TRACE 7 3.1 3.9 2 DAYS >= 1.0 2 1.6 0.4 0 GREATEST SNOW DEPTH 6R 01/20 0 DEGREE DAYS HEATING TOTAL 867 964 -97 693 SINCE 7/1 2313 2702 -389 MM COOLING TOTAL 3 0 3 0 SINCE 1/1 3 0 3 MM .............................................................. WIND (MPH) AVERAGE WIND SPEED 7.4 HIGHEST WIND SPEED/DIRECTION 32/300 HIGHEST GUST SPEED/DIRECTION 50/130 SKY COVER AVERAGE SKY COVER 0.66 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 5 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 1 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 7 SLEET 0 FOG 13 FOG W/VIS <= 1/4 MILE 2 HAZE 4 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$