Washington: Today - Partly cloudy, high in mid 80s, low in upper 60s. Chance of rain is 30 percent through tonight.Winds will be light and variable. Monday - Cloudy, high in mid 80s.

Maryland and Virginia: Today - Considerable Cloudiness with a chance of showers, high in mid 80s. Low in mid 60s. Monday - Cloudy, high in mid 80s.

Lower Potomac and Chesapeake Bay: Today - Fair, visibility more than five miles. Winds will be southeasterly at 15 knots. Waves in unprotected waters will be one foot.

Atlantic Ocean Beaches from New Jersey to North Carolina: Today and Monday - Partly cloudy with a chance of showers in the north, highs from 70 to around 80. Water temperatures will be near 70 in the northe and near 80 in the south.

The Nation Yesterday: Showers and thunderstorms extended from parts of the eastern Dakotas across much of Minnesota into northwestern Wisconsin. A thunderstorm in Minnesota produced 70 mph winds at St. Cloud. Other thundershower activity ranged from eastern Missouri and eastern Iowa through the Ohio Valley to New England. Small hail fell early this afternoon near Marissa in southwestern Illinois. Widely scattered showers were spotted from southern California into New Mexico, in western Washington state, along the Gulf of Mexico coast area, and along the Atlantic Coast. Skies were mostly sunny from California into the Great Basin, from the northern Plains to west Texas, over North Carolina, portions of Virginia, and through parts of the central Great Lakes region. Cool temperatures prevailed across large sections of the West and through the extreme north central United States. Near midday today readings in the 50s and 60s prevailed from the Pacific northwest through the northern Rockies, in portions of northern North Dakota, and from northern Minnesota into upper Michigan and parts of northern Wisconsin. A few readings in the 40s ranged from Washington state into Montana. There were still some hot spots though, with 90s showing up in the southern Plains, the lower and middle Mississipi Valley, and the southeastern states.In Kansas' Medicine Lodge and Hutchinson had climbed into the low 100s. There were many lows in the 40s and 50s from the Dakotas across the upper Missippi Valley through the Great Lakes region to New England.

The national weather forecast for today: Showers and thundershowers will range from the middle and upper Mississippi Valley through the upper and central Great Lakes and Ohio Valley, and from southeast Texas along the Gulf Coast through Florida. There will be scattered to widely scattered thundershowers from Washington state across Montana, through portions of the remainder of southern Texas across the lower Mississippi Valley to Georgia and South Carolina, and from the lower Great Lakes to the north Atlantic Coast states. Skies will be mostly sunny from the California across the Great Basin into the central Plains. Temperatures will be warm from southern Arizona acorss the lower and middle Mississippi Valley to the south and middle Atlantic Coast states. Cool to mild temperatures will prevail through much of the remainder of the nation.

Almanac Data for today: The sun rises 6:51 a.m., sets 7:14 p.m.; moon rises 7:54 p.m., sets 7:39 a.m. Tides: high 9:12 a.m. and 9:40 p.m., low 3:30 a.m. and 3:51 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolis (3 1/4), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/4), Point Lookout (7).

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 1 p.m. period was 44 for the pollutant, photochemical oxidants. Index values between 25 and 49 indicate fair air quality. When the index exceeds 100 the air is considered very unhealthy and individuals with lung, heart and eye ailments are urged to restrict their activity. The forecast for today indicates that the air will improve.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 3.0 feet today. Local Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnight(COLUMN)72(COLUMN)79 1 a.m.(COLUMN)71(COLUMN)82 2 a.m.(COLUMN)70(COLUMN)84 3 a.m.(COLUMN)70(COLUMN)84 4 a.m.(COLUMN)69(COLUMN)87 5 a.m.(COLUMN)70(COLUMN)84 6 a.m.(COLUMN)69(COLUMN)87 7 a.m.(COLUMN)67(COLUMN)93 8 a.m.(COLUMN)69(COLUMN)87 9 a.m.(COLUMN)71(COLUMN)82 10 a.m.(COLUMN)73(COLUMN)76 11 a.m.(COLUMN)78(COLUMN)65 12 noon(COLUMN)82(COLUMN)57 1 p.m.(COLUMN)85(COLUMN)48 3 p.m.(COLUMN)87(COLUMN)47 4 p.m.(COLUMN)87(COLUMN)47 5 p.m.(COLUMN)85(COLUMN)50 6 p.m.(COLUMN)83(COLUMN)53(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)64 Ankara(COLUMN)pt. cldy(COLUMN)3 p.m.(COLUMN)75 Athens(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)77 Auckland(COLUMN)cloudy(COLUMN)12 a.m.(COLUMN)54 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)67 Birmingham(COLUMN)pt. cloudy(COLUMN)1 p.m.(COLUMN)66 Bonn(COLUMN)pt. cldy(COLUMN)1 a.m.(COLUMN)66 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)91 Casablanca(COLUMN)pt. cldy(COLUMN)12 p.m.(COLUMN)77 Copenhagen(COLUMN)pg. cldy(COLUMN)1 p.m.(COLUMN)61 Dublin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)43 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)66 Hong Kong(COLUMN)pt. cloudy(COLUMN)8 p.m.(COLUMN)84 Jerusalem(COLUMN)clear(COLUMN)2 p.m.(COLUMN)87 Lisbon(COLUMN)clear(COLUMN)12 p.m.(COLUMN)79 London(COLUMN)clear(COLUMN)1 p.m.(COLUMN)68 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)82 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Manila(COLUMN)rain(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)54 New Delhi(COLUMN)pt. cldy(COLUMN)5 p.m.(COLUMN)91 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)75 Oslo(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)61 Paris(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Peking(COLUMN)storm(COLUMN)8 p.m.(COLUMN)73 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)79 Sofia(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)64 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)54 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)70 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)84 Vienna(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55(END TABLE)