Washington: Today - Mostly sunny, high in mid 80s, low in mid 60s. Chance of rain is 10 percent through tonight. Winds will be northeasterly at 10 mph. Sunday - Mostly sunny, high 85 to 90.

Maryland and Virginia: Today - Mostly sunny, high in 80s, low in 60s. Cloudiness will persist with a chance of rain near the coast. Sunday - Mostly sunny, high in 80s.

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

Atlantic Ocean Beaches from New Jersey to North Carolina: Today - Hurricane watch in effect for beaches in northeastern North Carolina. Today will be rainy and windy with rough surf. Highs will be in the 70s. Sunday - Partly cloudy, high in 80s. Otherwise the beaches should be partly sunny with highs in the 70s to around 80. Sunday - Partly sunny, high in near 80s. Water temperatures will be in the mid 70s to around 80.

Extended Area Lookout for Monday through Wednesday: Generally fair through the period. Highs will average in the 80s and lows in the 60s. Normal Washington temperatures for the period will be a high of 83 and a low of 64.

West Virginia: Today - Partly sunny and warm, high in mid 70s to low 80s, low in 50s. Sunday - mostly sunny, high in the low 80s.

The National Weather Forecast for today - Widely scattered showers and thundershowers will extend from west Texas over south Texas, the Gulf Coast region and Florida into extreme southern and southeast Georgia. They will also fall over the upper Mississippi Valley across the upper Great Lakes region, portions of the Rockies, Arizona, southern Utah and south eastern Oklahoma. It will be hot over Oklahoma and mild over the Pacific northwest and Idaho. The rest of the country will have seasonably warm temperatures.

Almanac Data for today: The sun rises at 6:38 a.m., sets 7:37 p.m., moon rises 6:32 a.m., sets 7:36 p.m., low 3:10 a.m. and 3:33 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 2 to 3 p.m. period was 19 for the pollutant, photochemical oxidents. Index values between 0 and 24 indicate good air quality. When the index exceeds 130 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 quality will remain good.

The National Weather Service forecasts the Potomac River Stage at Little Falls should remain at 3.3 feet today. Local Temps. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnite(COLUMN)76(COLUMN)88 1 a.m.(COLUMN)76(COLUMN)88 2 a.m.(COLUMN)76(COLUMN)88 3 a.m.(COLUMN)75(COLUMN)91 4 a.m.(COLUMN)75(COLUMN)91 5 a.m.(COLUMN)74(COLUMN)94 6 a.m.(COLUMN)74(COLUMN)91 7 a.m.(COLUMN)72(COLUMN)94 8 a.m.(COLUMN)72(COLUMN)94 9 a.m.(COLUMN)72(COLUMN)90 10 a.m.(COLUMN)72(COLUMN)90 11 a.m.(COLUMN)73(COLUMN)87 12 noon(COLUMN)74(COLUMN)85 1 p.m.(COLUMN)75(COLUMN)79 2 p.m.(COLUMN)77(COLUMN)74 3 p.m.(COLUMN)77(COLUMN)74 4 p.m.(COLUMN)78(COLUMN)71 5 p.m.(COLUMN)78(COLUMN)71 6 p.m.(COLUMN)78(COLUMN)65 7 p.m.(COLUMN)77(COLUMN)71(END TABLE) Temperatures ending 8 a.m. (EDI) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)63(COLUMN)57 Albuquerque(COLUMN)87(COLUMN)57 Amarillo(COLUMN)85(COLUMN)63 Anchorage(COLUMN)61(COLUMN)49 Asheville(COLUMN)85(COLUMN)67 Atlanta(COLUMN)90(COLUMN)66 Atlantic City(COLUMN)77(COLUMN)67 Austin(COLUMN)88(COLUMN)73 Baltimore(COLUMN)78(COLUMN)69 Billings(COLUMN)84(COLUMN)54 Birmingham(COLUMN)82(COLUMN)66 Bismack(COLUMN)85(COLUMN)59 Boise(COLUMN)83(COLUMN)69 Boston(COLUMN)70(COLUMN)62 Brownsville(COLUMN)91(COLUMN)76 Buffalo(COLUMN)71(COLUMN)50 Burlington(COLUMN)71(COLUMN)54 Casper(COLUMN)87(COLUMN)56 Charleston, S.C.(COLUMN)87(COLUMN)80 Charleston, W.Va.(COLUMN)77(COLUMN)63 Charlotte(COLUMN)90(COLUMN)72 Cheyenne(COLUMN)82(COLUMN)53 Chicago(COLUMN)81(COLUMN)62 Cincinnati(COLUMN)75(COLUMN)56 Cleveland(COLUMN)78(COLUMN)53 Columbia, S.C.(COLUMN)96(COLUMN)73 Columbus(COLUMN)76(COLUMN)53 Dal.-Ft. Worth(COLUMN)90(COLUMN)72 Dayton(COLUMN)75(COLUMN)52 Denver(COLUMN)85(COLUMN)54 Des Moines(COLUMN)83(COLUMN)62 Detroit(COLUMN)78(COLUMN)52 Duluth(COLUMN)72(COLUMN)54 El Paso(COLUMN)84(COLUMN)60 Fairbanks(COLUMN)70(COLUMN)48 Fargo(COLUMN)80(COLUMN)66 Flagstaff(COLUMN)81(COLUMN)45 Great Falls(COLUMN)81(COLUMN)61 Hartford(COLUMN)64(COLUMN)59 Helena(COLUMN)79(COLUMN)53 Honolulu(COLUMN)90(COLUMN)77 Houston(COLUMN)81(COLUMN)72 Indianapolis(COLUMN)82(COLUMN)55 Jackson, Miss.(COLUMN)87(COLUMN)66 Jacksonville(COLUMN)92(COLUMN)76 Juneau(COLUMN)57(COLUMN)4 Kansas City(COLUMN)83(COLUMN)60 Las Vegas(COLUMN)104(COLUMN)74 Little Rock(COLUMN)81(COLUMN)60 Los Angeles(COLUMN)34(COLUMN)66 Louisville(COLUMN)77(COLUMN)59 Memphis(COLUMN)73(COLUMN)65 Miami Beach(COLUMN)85(COLUMN)74 Midland-Odessa(COLUMN)83(COLUMN)67 Mpls.-St. Paul(COLUMN)79(COLUMN)63 Nashviles(COLUMN)73(COLUMN)66 New Orleans(COLUMN)89(COLUMN)74 New York(COLUMN)72(COLUMN)61 Norfolk(COLUMN)92(COLUMN)72 North Platte(COLUMN)88(COLUMN)60 Oklahoma City(COLUMN)92(COLUMN)67 Omaha(COLUMN)82(COLUMN)64 Orlando(COLUMN)93(COLUMN)72 Philadelphia(COLUMN)85(COLUMN)66 Phoenix(COLUMN)106(COLUMN)81 Pittsburgh(COLUMN)65(COLUMN)53 Portland, Ma.(COLUMN)63(COLUMN)59 Portland, Ore.(COLUMN)69(COLUMN)62 Providence(COLUMN)70(COLUMN)61 Raleigh(COLUMN)92(COLUMN)71 Rapid City(COLUMN)92(COLUMN)54 Reno(COLUMN)85(COLUMN)48 Richmonds(COLUMN)90(COLUMN)72 St. Louis(COLUMN)85(COLUMN)56 St. Ptbg-Tampa(COLUMN)91(COLUMN)75 Salt Lake City(COLUMN)86(COLUMN)59 San Antonio(COLUMN)88(COLUMN)74 San Diego(COLUMN)77(COLUMN)69 San Francisco(COLUMN)69(COLUMN)52 San Juan Pr.(COLUMN)91(COLUMN)77 St. Ste. Marie(COLUMN)69(COLUMN)43 Seattle(COLUMN)66(COLUMN)59 Shreveport(COLUMN)86(COLUMN)71 Sioux Falls(COLUMN)83(COLUMN)66 Spokane(COLUMN)66(COLUMN)53 Syracuse(COLUMN)73(COLUMN)56 Topeka(COLUMN)82(COLUMN)59 Tucson(COLUMN)97(COLUMN)79 Tulsa(COLUMN)90(COLUMN)67 Washington(COLUMN)86(COLUMN)72 Wichita(COLUMN)87(COLUMN)64(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Amsterdam(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)61 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)38 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)82 Auckland(COLUMN)rain(COLUMN)12 a.m.(COLUMN)48 Berlin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)57 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Bonn(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Casablanca(COLUMN)pt. cldy(COLUMN)12 p.m.(COLUMN)77 Copenhagan(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)81 Jerusalem(COLUMN)clear(COLUMN)2 p.m.(COLUMN)79 Lisbon(COLUMN)cloudy(COLUMN)12 p.m.(COLUMN)75 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)84 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)82 Manila(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)84 Moscow(COLUMN)pt. cldy(COLUMN)3 p.m.(COLUMN)70 New Delhi(COLUMN)rain(COLUMN)5 p.m.(COLUMN)75 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)75 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Peking(COLUMN)rain(COLUMN)8 p.m.(COLUMN)64 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Sofia(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)55 Stockholm(COLUMN)rain(COLUMN)1 p.m.(COLUMN)55 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)59 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)73 Vienna(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Warsaw(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)56(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)89(COLUMN)75 Barbados(COLUMN)fair(COLUMN)87(COLUMN)77 Bermuda(COLUMN)fair(COLUMN)86(COLUMN)81 Bogota(COLUMN)pt. cloudy(COLUMN)67(COLUMN)49 Havana(COLUMN)pt. cloudy(COLUMN)67(COLUMN)77 Kingston(COLUMN)fair(COLUMN)89(COLUMN)79 Montego Bay(COLUMN)pt. cloudy(COLUMN)89(COLUMN)73 Mexico City(COLUMN)fair(COLUMN)77(COLUMN)52 Monterrey(COLUMN)fair(COLUMN)86(COLUMN)71 St. Kitts(COLUMN)pt. cloudy(COLUMN)90(COLUMN)75 Veracruz(COLUMN)pt. cloudy(COLUMN)89(COLUMN)72(END TABLE)