Climatological Report (Daily)
Issued by NWS Sterling, VA
Issued by NWS Sterling, VA
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953
CDUS41 KLWX 122133
CLIIAD
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
533 PM EDT THU SEP 12 2024
...................................
...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 12 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 82 3:28 PM 95 1998 81 1 91
2019
MINIMUM 57 3:37 AM 40 1967 60 -3 65
AVERAGE 70 70 0 78
PRECIPITATION (IN)
TODAY 0.00 1.18 1965 0.13 -0.13 0.81
MONTH TO DATE T 1.48 -1.48 3.50
SINCE SEP 1 T 1.48 -1.48 3.50
SINCE JAN 1 25.78 30.70 -4.92 22.72
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 1 -1 0
MONTH TO DATE 11 3 8 0
SINCE SEP 1 11 3 8 0
SINCE JUL 1 13 4 9 0
COOLING
TODAY 5 6 -1 13
MONTH TO DATE 34 86 -52 178
SINCE SEP 1 34 86 -52 178
SINCE JAN 1 1448 1142 306 1293
...................................................................
WIND (MPH)
HIGHEST WIND SPEED 12 HIGHEST WIND DIRECTION E (90)
HIGHEST GUST SPEED 17 HIGHEST GUST DIRECTION SE (130)
AVERAGE WIND SPEED 2.8
SKY COVER
AVERAGE SKY COVER 0.3
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED TODAY.
FOG
RELATIVE HUMIDITY (PERCENT)
HIGHEST 97 7:00 AM
LOWEST 37 4:00 PM
AVERAGE 67
..........................................................
THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TOMORROW
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 80 94 1974
MINIMUM TEMPERATURE (F) 59 43 1985
SUNRISE AND SUNSET
SEPTEMBER 12 2024.....SUNRISE 6:49 AM EDT SUNSET 7:22 PM EDT
SEPTEMBER 13 2024.....SUNRISE 6:50 AM EDT SUNSET 7:20 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$