044
CDUS41 KLWX 180647
CLIDCA
CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
247 AM EDT MON MAY 18 2026
...............................
..THE WASHINGTON NATIONAL DC CLIMATE SUMMARY FOR MAY 17 2026
CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1871 TO 2026
WEATHER ITEM OBSERVED TIME RECORD YEAR NORMAL DEPARTURE LAST
VALUE (LST) VALUE VALUE FROM YEAR
NORMAL
...............................................................
TEMPERATURE (F)
YESTERDAY
MAXIMUM 89 3:59 PM 92 1877 77 12 87
1896
1974
MINIMUM 64 5:40 AM 40 1875 58 6 66
1895
1956
AVERAGE 77 67 10 77
PRECIPITATION (IN)
YESTERDAY T 1.24 1947 0.13 -0.13 T
MONTH TO DATE 0.93 2.14 -1.21 4.75
SINCE MAR 1 4.38 8.85 -4.47 10.27
SINCE JAN 1 10.11 14.33 -4.22 15.06
SNOWFALL (IN)
YESTERDAY 0.0 MM MM 0.0 0.0 0.0
MONTH TO DATE 0.0 0.0 0.0 0.0
SINCE MAR 1 1.0 2.0 -1.0 0.0
SINCE JUL 1 10.6 13.7 -3.1 14.9
SNOW DEPTH 0
DEGREE DAYS
HEATING
YESTERDAY 0 2 -2 0
MONTH TO DATE 65 45 20 9
SINCE MAR 1 625 825 -200 521
SINCE JUL 1 3844 3748 96 3261
COOLING
YESTERDAY 12 4 8 12
MONTH TO DATE 35 51 -16 92
SINCE MAR 1 137 86 51 184
SINCE JAN 1 137 86 51 184
...............................................................
WIND (MPH)
HIGHEST WIND SPEED 14 HIGHEST WIND DIRECTION W (290)
HIGHEST GUST SPEED 21 HIGHEST GUST DIRECTION N (350)
AVERAGE WIND SPEED 5.5
SKY COVER
AVERAGE SKY COVER 0.5
WEATHER CONDITIONS
THE FOLLOWING WEATHER WAS RECORDED YESTERDAY.
LIGHT RAIN
RELATIVE HUMIDITY (PERCENT)
HIGHEST 87 6:00 AM
LOWEST 36 4:00 PM
AVERAGE 62
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THE WASHINGTON NATIONAL DC CLIMATE NORMALS FOR TODAY
NORMAL RECORD YEAR
MAXIMUM TEMPERATURE (F) 77 96 1877
MINIMUM TEMPERATURE (F) 59 40 1973
SUNRISE AND SUNSET
MAY 18 2026...........SUNRISE 5:53 AM EDT SUNSET 8:16 PM EDT
MAY 19 2026...........SUNRISE 5:52 AM EDT SUNSET 8:17 PM EDT
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
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