Washington: Today - Sunny, high in the mid 90s, low in the low 70s. The chance of rain is 10 per cent through tonight Tuesday - Partly cloudy, high in the mid 90s.

Maryland and Virginia: Today - Sunny, highs ranging from the 80s to the 100s, lows from the 60s to the 70s. Tuesdays - Partly sunny, highs ranging from the 80s to the 100s.

Lower Potomac and Chesapeake Bay: Today - Fair with visibility of more than five miles. Wind will be from the southwest at less than 15 knots. Waves in unprotected waters will be less than 3 feet.

Atlantic Ocean Beaches from Cape May to Delaware: Today and Tuesday - Partly sunny, humid, high near 90. There is a chance of thundershowers on Tuesday. Water temperatures will be from the low to mid 70s.

Atlantic Ocean Beaches from Maryland to Cape Hatteras: Today and Tuesday - Partly sunny, highs from the mid 80s to near 90. There is a chance of thundershowers on Tuesday. Water temperatures will be from the mid 70s to near 80.

Extended Area Forecast for Wednesday through Friday: Partly cloudy through the period. There will be a chance of thundershowers on each day throughout the area, except for a southern Virginia. Highs will be in the 90s, low from the 60s in the mountains, to the 70s elsewhere Normal Washington temperatures for the period are a high of 88 and a low of 69.

West Virginia: Today - Showers highs from the 80s to the low 90s, lows from the mid 60s to the low 70s. Tuesday - Showers, highs from the 80s to the late 90s.

The National Weather Forecast for today - Showers and thunderstorms will scatter over portions of the eastern Gulf Coast and from the middle Mississippi valley, the upper Great Lakes, the Ohio valley eastward to the Appalachians and over much of New England. Widely scattered showers and thunderstorms are likely over the lower Mississippi valley and along the Atlantic coast and west to the Appalachians, along the eastern Gulf coast and over the Rocky mountains. Temperatures will be seasonably mild over the central and northern plains. The remainder of the country will be from warm to hot.

ALAMANAC DATA FOR Monday, August 8, 1977: Sun rises 6:15 a.m., sets 8:12 p.m.; moon rises 1:01 a.m., sets 3:24 p.m. Tides: High 3:32 a.m. and 3:54 p.m. Low 10:35 a.m. and 10:45 p.m. High and low tides at the following locations can be obtained by subtracting the hours indicated from the tides above. Annapolis (3 1/2); Bloody Point Lighthouse (4 1/2); Deale, Md. (4 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (1); Solomons Island (6 1/2); Point Lookout (7).

The National Weather Service forecasts the Potomac River stage at Little Falls will be near 2.7 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mdt.(COLUMN)78(COLUMN)88 1 a.m.(COLUMN)78(COLUMN)88 3 a.m.(COLUMN)76(COLUMN)93 4 a.m.(COLUMN)76(COLUMN)93 5 a.m.(COLUMN)76(COLUMN)93 6 a.m.(COLUMN)75(COLUMN)97 7 a.m.(COLUMN)76(COLUMN)93 8 a.m.(COLUMN)77(COLUMN)93 9 a.m.(COLUMN)81(COLUMN)80 10 a.m.(COLUMN)85(COLUMN)70 11 a.m.(COLUMN)91(COLUMN)58 12 noon(COLUMN)93(COLUMN)51 1 p.m.(COLUMN)90(COLUMN)54 2 p.m.(COLUMN)93(COLUMN)49 3 p.m.(COLUMN)93(COLUMN)49 4 p.m.(COLUMN)93(COLUMN)49 5 p.m.(COLUMN)92(COLUMN)51 6 p.m.(COLUMN)92(COLUMN)51 7 p.m.(COLUMN)91(COLUMN)52(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday.(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)81(COLUMN)69 Albuquerque(COLUMN)99(COLUMN)69 Amarillo(COLUMN)95(COLUMN)71 Anchorage(COLUMN)69(COLUMN)57 Asheville(COLUMN)89(COLUMN)65 Atlanta(COLUMN)90(COLUMN)72 Atlantic City(COLUMN)90(COLUMN)77 Austin(COLUMN)98(COLUMN)75 Baltimore(COLUMN)78(COLUMN)74 Billinos(COLUMN)76(COLUMN)53 Birmingham(COLUMN)92(COLUMN)75 Bismarck(COLUMN)80(COLUMN)51 Boise(COLUMN)89(COLUMN)63 Boston(COLUMN)91(COLUMN)69 Brownsville(COLUMN)94(COLUMN)76 Burlington, Vt.(COLUMN)80(COLUMN)68 Casper(COLUMN)83(COLUMN)62 Charleston, S.C.(COLUMN)93(COLUMN)77 Charleston. W.V.(COLUMN)89(COLUMN)71 Charlotte, N.C.(COLUMN)94(COLUMN)75 Cheyenne(COLUMN)80(COLUMN)52 Chicago(COLUMN)80(COLUMN)72 Cincinnati(COLUMN)91(COLUMN)69 Cleveland(COLUMN)78(COLUMN)69 Columbia, S.C.(COLUMN)93(COLUMN)70 Columbus, Ohio(COLUMN)90(COLUMN)70 Dal, Ft. Worth(COLUMN)98(COLUMN)76 Dayton(COLUMN)88(COLUMN)69 Denver(COLUMN)88(COLUMN)62 Des Moines(COLUMN)79(COLUMN)70 Detroit(COLUMN)82(COLUMN)71 Duluth(COLUMN)72(COLUMN)57 El Paso(COLUMN)100(COLUMN)71 Fairbanks(COLUMN)66(COLUMN)50 Fargo(COLUMN)68(COLUMN)49 Flagstaff(COLUMN)87(COLUMN)60 Great Falls(COLUMN)73(COLUMN)50 Hartford(COLUMN)92(COLUMN)73 Helena(COLUMN)74(COLUMN)51 Honolulu(COLUMN)87(COLUMN)78 Houston(COLUMN)90(COLUMN)80 Indianapolis(COLUMN)92(COLUMN)70 Jackson, Miss.(COLUMN)92(COLUMN)73 Jacksonville(COLUMN)92(COLUMN)73 Juneau(COLUMN)74(COLUMN)57 Kansas City(COLUMN)88(COLUMN)77 Las Vegas(COLUMN)107(COLUMN)81 Little Rock(COLUMN)94(COLUMN)75 Los Angeles(COLUMN)85(COLUMN)65 Louisville(COLUMN)93(COLUMN)75 Memphis(COLUMN)94(COLUMN)79 Miami Beach(COLUMN)85(COLUMN)74 Midland Odessa(COLUMN)97(COLUMN)72 Milwaukee(COLUMN)76(COLUMN)68 Mpls.-St. Paul(COLUMN)77(COLUMN)61 Nashville(COLUMN)96(COLUMN)74 New Orleans(COLUMN)93(COLUMN)75 New York(COLUMN)93(COLUMN)75 Norfolk(COLUMN)100(COLUMN)80 North Platte(COLUMN)81(COLUMN)56 Oklahoma City(COLUMN)94(COLUMN)74 Omaha(COLUMN)79(COLUMN)67 Orlando(COLUMN)91(COLUMN)75 Philadelphia(COLUMN)93(COLUMN)73 Phoenix(COLUMN)109(COLUMN)88 Pittsburgh(COLUMN)84(COLUMN)66 Portland, Maine(COLUMN)83(COLUMN)69 Portland, Ore.(COLUMN)89(COLUMN)61 Providence(COLUMN)91(COLUMN)73 Rapid City(COLUMN)81(COLUMN)57 Reno(COLUMN)87(COLUMN)51 Richmond(COLUMN)99(COLUMN)76 St. Louis(COLUMN)93(COLUMN)75 St. Prbg.-Tampa(COLUMN)93(COLUMN)76 Salt Lake City(COLUMN)91(COLUMN)62 San Antonio(COLUMN)93(COLUMN)76 San Diego(COLUMN)76(COLUMN)69 San Francisco(COLUMN)63(COLUMN)59 San Juan, P.R.(COLUMN)86(COLUMN)74 St. Ste. Marie(COLUMN)73(COLUMN)52 Seattle(COLUMN)87(COLUMN)57 Shreveport(COLUMN)92(COLUMN)70 Sioux Falls(COLUMN)79(COLUMN)63 Spokane(COLUMN)86(COLUMN)59 Syracuse(COLUMN)78(COLUMN)67 Topeka(COLUMN)92(COLUMN)79 Tucson(COLUMN)97(COLUMN)80 Tulsa(COLUMN)99(COLUMN)77 Washington(COLUMN)95(COLUMN)75 Wichita(COLUMN)92(COLUMN)74(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61 Amsterdam(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)79 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)88 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)48 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)75 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Brussels(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)91 Casablanca(COLUMN)pt. cldy(COLUMN)noon(COLUMN)73 Copenhagen(COLUMN)pt. cldy(COLUMN)noon(COLUMN)73 Dublin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)63 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)75 Hong Kong(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)84 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)75 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)84 Malta(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)81 Manila(COLUMN)rain(COLUMN)8 p.m.(COLUMN)84 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)84 New Delhi(COLUMN)pt. cldy(COLUMN)5 p.m.(COLUMN)91 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)66 Paris(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)68 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)82 Saigon(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)84 Sofia(COLUMN)rain(COLUMN)2 p.m.(COLUMN)68 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)54 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)90 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)79 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)86 Vienna(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)77 Warsaw(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)70(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)TemP. Acapulco(COLUMN)pt. cldy(COLUMN)89(COLUMN)79 Barbados(COLUMN)pt. cldy(COLUMN)86(COLUMN)77 Bermuda(COLUMN)pt. cldy(COLUMN)86(COLUMN)78 Bogota(COLUMN)pt. cloudy(COLUMN)67(COLUMN)44 Calgary(COLUMN)clear(COLUMN)59(COLUMN)43 Culiacan(COLUMN)pt. cldy$100(COLUMN)75 Edmonton(COLUMN)clear(COLUMN)63(COLUMN)37 Havana(COLUMN)pt. cldy(COLUMN)87(COLUMN)75 Kingston(COLUMN)pt. cldy(COLUMN)91(COLUMN)79 Montego Bay(COLUMN)pt. cldy(COLUMN)91(COLUMN)75 Mexico City(COLUMN)pt. cldy(COLUMN)77(COLUMN)56 Monterry(COLUMN)pt. cldy(COLUMN)100(COLUMN)73 Montreal(COLUMN)pt. cldy(COLUMN)81(COLUMN)55 Nassau(COLUMN)cloudy(COLUMN)87(COLUMN)75 Ottawa(COLUMN)fog(COLUMN)79(COLUMN)59 Regina(COLUMN)pt. cldy(COLUMN)68(COLUMN)41 St. Kitts(COLUMN)pt. cldy(COLUMN)89(COLUMN)75 St. Thomas(COLUMN)pt. cldy(COLUMN)89(COLUMN)75 Toronto(COLUMN)cloudy(COLUMN)79(COLUMN)61 Vancouver(COLUMN)clear(COLUMN)81(COLUMN)59 Veracruz(COLUMN)pt. cldy(COLUMN)89(COLUMN)73 Winnipeg(COLUMN)clear(COLUMN)77(COLUMN)48(END TABLE)