Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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693
CDUS41 KLWX 182128
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
528 PM EDT WED SEP 18 2024
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 18 2024...
VALID TODAY AS OF 0500 PM LOCAL TIME.
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1960 TO 2024
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...................................................................
TEMPERATURE (F)
TODAY
MAXIMUM 75 3:03 PM 91 1978 79 -4 79
MINIMUM 67 4:12 AM 37 1990 57 10 61
AVERAGE 71 68 3 70
PRECIPITATION (IN)
TODAY 0.53 1.76 2003 0.15 0.38 0.00
MONTH TO DATE 0.61 2.33 -1.72 3.61
SINCE SEP 1 0.61 2.33 -1.72 3.61
SINCE JAN 1 26.39 31.55 -5.16 22.83
SNOWFALL (IN)
TODAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 T
SINCE SEP 1 0.0 0.0 0.0 T
SINCE JUL 1 0.0 0.0 0.0 T
SNOW DEPTH 0
DEGREE DAYS
HEATING
TODAY 0 2 -2 0
MONTH TO DATE 11 10 1 1
SINCE SEP 1 11 10 1 1
SINCE JUL 1 13 11 2 1
COOLING
TODAY 6 4 2 5
MONTH TO DATE 67 116 -49 204
SINCE SEP 1 67 116 -49 204
SINCE JAN 1 1481 1172 309 1319
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 13 HIGHEST WIND DIRECTION E (70)
HIGHEST GUST SPEED 20 HIGHEST GUST DIRECTION NE (60)
AVERAGE WIND SPEED 8.1
SKY COVER
AVERAGE SKY COVER 1.0
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
HEAVY RAIN
RAIN
LIGHT RAIN
FOG
HAZE
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 4:00 AM
LOWEST 79 12:00 PM
AVERAGE 88
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 78 93 1977
1978
MINIMUM TEMPERATURE (F) 57 36 1984
SUNRISE AND SUNSET
SEPTEMBER 18 2024.....SUNRISE 6:54 AM EDT SUNSET 7:12 PM EDT
SEPTEMBER 19 2024.....SUNRISE 6:55 AM EDT SUNSET 7:11 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$