Washington: Today - Variably cloudy, high in the mid 60s, low un the upper 40s. The chance of rain is 20 per cent today and near zero tonight. Tueaday - Sunny, high in the mid 60s.

Maryland and Virginia: Today - Variably cloudy, highs from the 50s to the upper 60s, lows from the 40s to the upper 50s; Tuesday - Sunny, highs from the 50s to the upper 60s.

Lower Potamac and Chesapeake Bay: Today - Variably cloudy, visibility of more than 5 miles. Wind will be from the northeast at less from 15 to 25 knots, with gusts of from 20 to 31 knots. Waves in unprotected waters will be from 2 to 4 feet.

Extended Area Forecast for Wednesday through Friday: Partly cloudy through the period, but a chance of showers on Thursday. Highs will be from the 60s on Wednesday, to the mid 70s by Thursday. Lows will range from the 30s in the mountains to the mid 50s. Normal Washington temperatures for the period are a high of 74 and a low of 53.

West Virginia: Today - Partly cloudy, highs in the 50s, lows from the mid 30s to the mid 40s. Tuesday - Sunny, highs from the mid 50s to the mid 60s.

The National Weather Forecast for today - Sunny to partly sunny skies, will cover most of the nation. Scattered showers will persist over interior New England and northern portions of the Middle Atlantic states. Scattered showers are expected in southern Florida and southern and south-western Texas. Montana may also receive some rain. Mild weather will be confines to the Gulf coast southern Texas and southern Rockies and the desert Southwest, while Florida will enjoy warm temperatures

Almanac data for today - Sun rises 7:56 a.m. Sets 6:46 p.m. Moon rises 11:03 p.m. sets 12:46 p.m. Tides: high 12:45 p.m. Low 7:34 a.m. and 7:35 p.m. High and low tides at the following locations can be obtained by subtracting the hours indicated from the tides above, Annapolis (11 1/2); Bloody Point Lighthouse (4 1/2); Deale, Md. (4 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (7); Solomons Islands (6 1/2) Point Lookout (7)

The National Weather Service forecasts the Potamac River stage at Little Falls should be near 2.5 feet today.

Washington data at 8 p.m. (EDT) yesterday: Highest temperature since 8 a.m. yesterday, 82 degrees, at 1:05 p.m. Lowest temperature since midnight 67 degrees at 7:00 p.m. Excess of temperature since October 1, 16 degrees. Excess of temperature since Jan. 1 457 degrees. Record high temperature for today, 92 degrees in 1879. Record low temperature for today, 35 degrees in 1899. Relative humidity: Maximum, 84 per cent at 4 a.m.; Minimum, 43 per cent at 5 p.m. 24 hours precipation, .03 inches. Deficiency of precipation since October 1, 14 inches.Deficiency of precipation since Jan. 1, 9.31 inches. Highest observed wind since 8 a.m., 21 miles per hour from the northwest at 5 p.m. Peak gust since 8 a.m. 37 miles per hour from the northwest at 3:20 p.m. Local Temp. Humidity(TABLE) Time(COLUMN)T(COLUMN)H 12 mid(COLUMN)74(COLUMN)76 1 a.m.(COLUMN)73(COLUMN)79 2 a.m.(COLUMN)73(COLUMN)79 3 a.m.(COLUMN)71(COLUMN)82 4 a.m.(COLUMN)70(COLUMN)84 5 a.m.(COLUMN)71(COLUMN)84 6 a.m.(COLUMN)70(COLUMN)84 7 a.m.(COLUMN)70(COLUMN)84 8 a.m.(COLUMN)71(COLUMN)79 9 a.m.(COLUMN)72(COLUMN)79 10 a.m.(COLUMN)73(COLUMN)76 11 a.m.(COLUMN)79(COLUMN)60 12 noon(COLUMN)81(COLUMN)55 1 p.m.(COLUMN)79(COLUMN)58 2 p.m.(COLUMN)78(COLUMN)60 3 p.m.(COLUMN)77(COLUMN)50 4 p.m.(COLUMN)79(COLUMN)47 5 p.m.(COLUMN)75(COLUMN)43 6 p.m.(COLUMN)72(COLUMN)44 7 p.m.(COLUMN)68(COLUMN)47(END TABLE) Temperatures ending 8 a.m. (EDT) Yesterday(TABLE) City(COLUMN)H(COLUMN)L Albany(COLUMN)66(COLUMN)56 Albuquerque(COLUMN)77(COLUMN)56 Amarillo(COLUMN)76(COLUMN)45 Anchorage(COLUMN)51(COLUMN)35 Asheville(COLUMN)76(COLUMN)67 Atlanta(COLUMN)84(COLUMN)73 Atlantic City(COLUMN)72(COLUMN)63 Austin(COLUMN)95(COLUMN)76 Baltimore(COLUMN)74(COLUMN)66 Billings(COLUMN)52(COLUMN)36 Birmingham(COLUMN)87(COLUMN)74 Bismarck(COLUMN)56(COLUMN)30 Boise(COLUMN)61(COLUMN)43 Boston(COLUMN)73(COLUMN)66 Brownville(COLUMN)86(COLUMN)77 Buffalo(COLUMN)58(COLUMN)48 Burlington(COLUMN)58(COLUMN)48 Casper(COLUMN)55(COLUMN)26 Charleston, S.C.(COLUMN)88(COLUMN)77 Charleston, W. Va.(COLUMN)76(COLUMN)60 Charlotte(COLUMN)79(COLUMN)74 Chevenne(COLUMN)56(COLUMN)35 Cincinnati(COLUMN)73(COLUMN)55 Cleveland(COLUMN)73(COLUMN)53 Chicago(COLUMN)62(COLUMN)49 Columbia, S.C.(COLUMN)86(COLUMN)76 Columbus(COLUMN)76(COLUMN)52 Dal Ft. Worth(COLUMN)98(COLUMN)68 Dayton(COLUMN)72(COLUMN)50 Denver(COLUMN)65(COLUMN)35 Des Moines(COLUMN)57(COLUMN)49 Detroit(COLUMN)55(COLUMN)44 Duluth(COLUMN)51(COLUMN)32 El Paso(COLUMN)90(COLUMN)62 Fairbanks(COLUMN)40%H29 Fargo(COLUMN)59(COLUMN)29 Flagstaff(COLUMN)73(COLUMN)30 Great Falls(COLUMN)53(COLUMN)38 Hartford(COLUMN)72(COLUMN)65 Helena(COLUMN)56(COLUMN)31 Honolulu(COLUMN)87(COLUMN)79 Houston(COLUMN)92(COLUMN)83 Indianapolis(COLUMN)73(COLUMN)53 Jackson, Miss(COLUMN)91(COLUMN)73 Jacksonville(COLUMN)90(COLUMN)70 Kansas City(COLUMN)67(COLUMN)52 Las Vegas(COLUMN)83(COLUMN)58 Little Rock(COLUMN)89(COLUMN)67 Los Angeles(COLUMN)86(COLUMN)63 Louisville(COLUMN)77(COLUMN)57 Memphis(COLUMN)87(COLUMN)62 Miami Beach(COLUMN)85(COLUMN)81 Midland-Odessa(COLUMN)89(COLUMN)62 Milwaukee(COLUMN)54(COLUMN)43 Mpts.-St. Paul(COLUMN)60(COLUMN)35 Nashville(COLUMN)86(COLUMN)63 New Orleans(COLUMN)92(COLUMN)75 New York(COLUMN)70(COLUMN)40 Norfolk(COLUMN)85(COLUMN)70 North Platte(COLUMN)60(COLUMN)39 Oklahoma City(COLUMN)85(COLUMN)56 Omaha(COLUMN)53(COLUMN)46 Orlando(COLUMN)91(COLUMN)73 Philadelphia(COLUMN)71(COLUMN)65 Phoenix(COLUMN)96(COLUMN)70 Pittsburgh(COLUMN)73(COLUMN)54 Portland, Md.(COLUMN)59(COLUMN)56 Portland, Ore.(COLUMN)64(COLUMN)46 Providence(COLUMN)72(COLUMN)66 Raleigh(COLUMN)82(COLUMN)68 Rapid City(COLUMN)44(COLUMN)37 Reno(COLUMN)67(COLUMN)31 Richmond(COLUMN)82(COLUMN)67 St. Louis(COLUMN)76(COLUMN)52 St. Prog-Tampa(COLUMN)91(COLUMN)73 Salt Lake City(COLUMN)62(COLUMN)41 San Antonio(COLUMN)94(COLUMN)80 San Diego(COLUMN)75(COLUMN)67 San Francisco(COLUMN)74(COLUMN)60 San Juan(COLUMN)88(COLUMN)79 St. Ste Marie(COLUMN)58(COLUMN)39 Seattle(COLUMN)61(COLUMN)45 Shreveport(COLUMN)94(COLUMN)74 Soiux Falls(COLUMN)54(COLUMN)34 Spokane(COLUMN)56(COLUMN)37 Syracuse(COLUMN)64(COLUMN)52 Topeka(COLUMN)71(COLUMN)54 Tucson(COLUMN)93(COLUMN)64 Tuisa(COLUMN)84(COLUMN)56 Washington(COLUMN)77(COLUMN)70 Wichita(COLUMN)76(COLUMN)54(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)52 Amsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)59 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)73 Auckland(COLUMN)cloudy(COLUMN)midnight(COLUMN)54 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Birmingham(COLUMN)pt. Cldy(COLUMN)1 p.m.(COLUMN)52 Brussels(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)93 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)65 Copenhagen(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)52 Dublin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)54 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Hong Kong(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)87 Lisbon(COLUMN)clear(COLUMN)1 p.m.(COLUMN)noon 55 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)79 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)81 Moscow(COLUMN)rain(COLUMN)3 p.m.(COLUMN)46 New Delhi(COLUMN)pt. cldy.(COLUMN)5 p.m.(COLUMN)84 Nice(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)72 Oslo(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)52 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)61 Rome(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)73 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)66 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Sydney(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)68 Tel Aviv.(COLUMN)pt. cldy.(COLUMN)2 p.m.(COLUMN)81 Tokyo(COLUMN)pt. cldy.(COLUMN)9 p.m.(COLUMN)68 Tumis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)81 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)sunny(COLUMN)90(COLUMN)73 Bardados(COLUMN)pt. sunny(COLUMN)86(COLUMN)75 Bogota(COLUMN)pt. sunny(COLUMN)63(COLUMN)50 Calgary(COLUMN)clear(COLUMN)54(COLUMN)34 Edmonton(COLUMN)cloudy(COLUMN)54(COLUMN)43 Havana(COLUMN)sunny(COLUMN)83(COLUMN)75 Kingston(COLUMN)sunny(COLUMN)91(COLUMN)79 Montego Bay(COLUMN)sunny(COLUMN)85(COLUMN)72 Mexico City(COLUMN)pt. sunny(COLUMN)75(COLUMN)57 Monterrey(COLUMN)pt. sunny(COLUMN)93(COLUMN)75 Montreal(COLUMN)rain(COLUMN)50(COLUMN)46 Nassau(COLUMN)pt. sunny(COLUMN)86(COLUMN)73 Ottawa(COLUMN)rain(COLUMN)48(COLUMN)46 Regina(COLUMN)clear(COLUMN)57(COLUMN)32 St. Kitts(COLUMN)pt. sunny(COLUMN)90(COLUMN)78 St. Thomas(COLUMN)sunny(COLUMN)90(COLUMN)80 Toronto(COLUMN)rain(COLUMN)52(COLUMN)46 Vancouver(COLUMN)pt. cldy.(COLUMN)49(COLUMN)41 Veracruz(COLUMN)sunny(COLUMN)90(COLUMN)73 Winnipeg(COLUMN)clear(COLUMN)59(COLUMN)30(END TABLE)