National Weather Service Text Product
AFOS product CLIIAD
Dates interpreted at 00:00 UTCDisplaying AFOS PIL: CLIIAD
Product Timestamp: 2023-09-17 05:23 UTC
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741 CDUS41 KLWX 170523 CLIIAD CLIMATE REPORT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 123 AM EDT SUN SEP 17 2023 ................................... ...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR SEPTEMBER 16 2023... CLIMATE NORMAL PERIOD: 1991 TO 2020 CLIMATE RECORD PERIOD: 1960 TO 2023 WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST VALUE (LST) VALUE VALUE FROM YEAR NORMAL ................................................................... TEMPERATURE (F) YESTERDAY MAXIMUM 84 3:07 PM 97 1991 79 5 82 MINIMUM 49 5:47 AM 37 1984 58 -9 52 AVERAGE 67 69 -2 67 PRECIPITATION (IN) YESTERDAY 0.00 2.05 1999 0.15 -0.15 0.00 MONTH TO DATE 3.50 2.04 1.46 2.78 SINCE SEP 1 3.50 2.04 1.46 2.78 SINCE JAN 1 22.72 31.26 -8.54 30.28 SNOWFALL (IN) YESTERDAY 0.0 MM MM 0.0 0.0 0.0 MONTH TO DATE T 0.0 0.0 0.0 SINCE SEP 1 T 0.0 0.0 0.0 SINCE JUL 1 T 0.0 0.0 0.0 SNOW DEPTH 0 DEGREE DAYS HEATING YESTERDAY 0 1 -1 0 MONTH TO DATE 0 7 -7 0 SINCE SEP 1 0 7 -7 0 SINCE JUL 1 0 8 -8 0 COOLING YESTERDAY 2 5 -3 2 MONTH TO DATE 199 107 92 141 SINCE SEP 1 199 107 92 141 SINCE JAN 1 1314 1163 151 1319 ................................................................... WIND (MPH) HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (290) HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION NW (310) AVERAGE WIND SPEED 4.1 SKY COVER AVERAGE SKY COVER 0.1 WEATHER CONDITIONS THE FOLLOWING WEATHER WAS RECORDED YESTERDAY. NO SIGNIFICANT WEATHER WAS OBSERVED. RELATIVE HUMIDITY (PERCENT) HIGHEST 93 6:00 AM LOWEST MM AVERAGE MM .......................................................... THE WASHINGTON DULLES DC CLIMATE NORMALS FOR TODAY NORMAL RECORD YEAR MAXIMUM TEMPERATURE (F) 79 97 1991 MINIMUM TEMPERATURE (F) 58 35 1986 SUNRISE AND SUNSET SEPTEMBER 17 2023.....SUNRISE 6:53 AM EDT SUNSET 7:15 PM EDT SEPTEMBER 18 2023.....SUNRISE 6:54 AM EDT SUNSET 7:14 PM EDT - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. $$