Washington: Today -- Fair and warmer, high in the upper 60s, low in the mid 40s. The chance of rain is near zero. Monday - Fair, high in the mid 70s.

Maryland and Virginia: Today - Fair and warmer, high in the 60s, low from the upper 30s to mid 40s. Monday - Fair, high in the mid 70s.

Extended Area Outlook for Tuesday through Thursday: Fair and warm through the period, highs averaging from the 70s to the low 80s and lows from the 40s to the mid 50s. Normal Washington temperatures for the period are a high moon sets 9:34 a.m.

Lower Potomac and Chesapeake Bay: Today -- Fair, with winds shifting to the southwest at 8 to 15 knots by nightfall. Visibility will be 5 miles or more. Waves in unprotected waters will average 1 foot or less.

West Virginia: Today -- Partly cloudy and warmer, highs from the mid 60s to mid 70s, lows in the 40s. Monday - Sunny, highs in the mid 70s to mid 80s.

The National Weather Forecast for Today -- Widely scattered showers will fall from the Paciic northwest across the Plateau and Rocky Mountain region. Cloudy conditions are expected across the northern Plains. Elsewhere, fair skies are forecast. Temperatures will be mild across the northern and central Atlantic Coast states. Unseasonably warm weather will continue throughout the Mississippi River valley and most of the Great Plains and will move into the Ohio River Valley. Coller temperatures are expected over the northern Plains and from the Rocky Mountains westward.

Almanac data for April 10, 19877: Sun rises 5:40 a.m., sets 6:40 p.m.; moon rises 00:00 a.m., sets 9:34 a.m.

Tides: High 12:47 a.m. and 1:13 p.m, low 7:37 a.m. and 8:16 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 Lighthous (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 that the Potomac River stage at Little Falls will fall to 5 2 feet.

Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)38(COLUMN)37 1 a.m.(COLUMN)37(COLUMN)37 2 a.m.(COLUMN)35(COLUMN)42 3 a.m.(COLUMN)35(COLUMN)44 4 a.m.(COLUMN)34(COLUMN)45 5 a.m.(COLUMN)33(COLUMN)45 6 a.m.(COLUMN)32(COLUMN)47 7 a.m.(COLUMN)33(COLUMN)45 7a.m.(COLUMN)33(COLUMN)45 8a.m.(COLUMN)35(COLUMN)44 9 a.m.(COLUMN)38(COLUMN)39 10 a.m.(COLUMN)40(COLUMN)34 11 a.m.(COLUMN)42(COLUMN)33 12 noon(COLUMN)44(COLUMN)32 1 p.m.(COLUMN)46(COLUMN)28 2 p.m.(COLUMN)48(COLUMN)28 3 p.m.(COLUMN)50(COLUMN)26 4 p.m.(COLUMN)50(COLUMN)29 5 p.m.(COLUMN)51(COLUMN)27 6 p.m.(COLUMN)51(COLUMN)26(END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)37(COLUMN)16 Abuquerque(COLUMN)79(COLUMN)47 Amarillo(COLUMN)83(COLUMN)50 Anchorage(COLUMN)42(COLUMN)36 Asheville(COLUMN)70(COLUMN)35 Atlanta(COLUMN)79(COLUMN)44 Atlantic City(COLUMN)49(COLUMN)27 Austin(COLUMN)78(COLUMN)57 Baltimore(COLUMN)51(COLUMN)29 Billings(COLUMN)75(COLUMN)52 Birmingham(COLUMN)82(COLUMN)42 Bismarck(COLUMN)75(COLUMN)47 Boise(COLUMN)81(COLUMN)45 Boston(COLUMN)45(COLUMN)26 Brownsville(COLUMN)82(COLUMN)53 Buffalo(COLUMN)31(COLUMN)20 Burlington, Vt.(COLUMN)28(COLUMN)18 Casper(COLUMN)73(COLUMN)43 Ch'tn, S.C.(COLUMN)86(COLUMN)54 Cha'tn., W.Va.(COLUMN)58(COLUMN)27 Charlotte(COLUMN)77(COLUMN)40 Cheyenne(COLUMN)70(COLUMN)35 Chicago(COLUMN)39(COLUMN)29 Cincinnati(COLUMN)50(COLUMN)27 Cleveland(COLUMN)35(COLUMN)18 Columbia, S.C.(COLUMN)86(COLUMN)47 Columbus(COLUMN)43(COLUMN)22 Dal.-Ft.W'th(COLUMN)83(COLUMN)52 Dayton(COLUMN)43(COLUMN)24 Denver(COLUMN)75(COLUMN)45 Des Moines(COLUMN)68(COLUMN)45 Detroit(COLUMN)40(COLUMN)22 Duluth(COLUMN)50(COLUMN)29 El Paso(COLUMN)88(COLUMN)49 Fairbanks(COLUMN)31(COLUMN)14 Fargo(COLUMN)65(COLUMN)45 Flagstaff(COLUMN)69(COLUMN)29 Great Falls(COLUMN)77(COLUMN)39 Hartford(COLUMN)46(COLUMN)23 Helena(COLUMN)79(COLUMN)45 Honolulu(COLUMN)84(COLUMN)73 Houston(COLUMN)78(COLUMN)54 Indianapolis(COLUMN)51(COLUMN)28 Jackson(COLUMN)81(COLUMN)50 Jacksonville(COLUMN)87(COLUMN)51 Juneau(COLUMN)41(COLUMN)38 Kansas City(COLUMN)76(COLUMN)55 Las Vegas(COLUMN)89(COLUMN)58 Little Rock(COLUMN)81(COLUMN)58 Los Angeles(COLUMN)70(COLUMN)52 Louisville(COLUMN)59(COLUMN)33 Memphis(COLUMN)79(COLUMN)51 Miami Beach(COLUMN)74(COLUMN)71 Midland(COLUMN)83(COLUMN)46 Milwaukee(COLUMN)36(COLUMN)25 Mpls.-St. Paul(COLUMN)58(COLUMN)39 Nashville(COLUMN)69(COLUMN)39 New Orleans(COLUMN)82(COLUMN)55 New York(COLUMN)44(COLUMN)25 Norfolk(COLUMN)62(COLUMN)39 North Platte(COLUMN)81(COLUMN)37 Oklahoma City(COLUMN)84(COLUMN)51 Omaha(COLUMN)78(COLUMN)49 OrlandO(COLUMN)83(COLUMN)53 Philadelphia(COLUMN)50(COLUMN)26 Phoenix(COLUMN)95(COLUMN)62 Pittsburgh(COLUMN)36(COLUMN)15 Portland, Me.40(COLUMN)18 Portland, Or.(COLUMN)58(COLUMN)42 Providence(COLUMN)48(COLUMN)23 Raleigh(COLUMN)74(COLUMN)33 Rapid City(COLUMN)81(COLUMN)64 Reno(COLUMN)70(COLUMN)42 Richmond(COLUMN)68(COLUMN)29 St. Louis(COLUMN)62(COLUMN)40 St. Prbg.-Tampa(COLUMN)82(COLUMN)55 Salt Lake City(COLUMN)81(COLUMN)58 San Antonio(COLUMN)78(COLUMN)55 San Diego(COLUMN)70(COLUMN)52 San Francisco(COLUMN)59(COLUMN)48 San Juan(COLUMN)86(COLUMN) St. Ste. Marie(COLUMN)29(COLUMN)09 Seattle(COLUMN)57(COLUMN)44 Shreveport(COLUMN)84(COLUMN)49 Sioux Falls(COLUMN)73(COLUMN)47 Spokane(COLUMN)70(COLUMN)34 Syracuse(COLUMN)40(COLUMN)15 Topeka(COLUMN)84(COLUMN)51 Tucson(COLUMN)89(COLUMN)56 Tulsa(COLUMN)86(COLUMN)51 Washington(COLUMN)53(COLUMN)32 Wichita(COLUMN)83(COLUMN)49(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN) cloudy(COLUMN)1 p.m.(COLUMN)41 Amsterdam(COLUMN) clear(COLUMN)1 p.m.(COLUMN)41 Ankara(COLUMN) clear(COLUMN)3 p.m.(COLUMN)70 Athens(COLUMN) cloudy(COLUMN)2 p.m.(COLUMN)72 Aucklan(COLUMN)pt. cldy(COLUMN) mid.(COLUMN)59 Berlin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)41 Birmingham(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)43 Brussels(COLUMN) snow(COLUMN)1 p.m. %H34 Cairo(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)82 Casablanca(COLUMN)pt. cldy(COLUMN) noon(COLUMN)64 Copenhagen(COLUMN) clear(COLUMN)1 p.m.(COLUMN)34 Dublin(COLUMN) clear(COLUMN)1 p.m.(COLUMN)48 Geneva(COLUMN) cloudy(COLUMN)1 p.m.(COLUMN)37 Hong Kong(COLUMN) clear(COLUMN)8 p.m.(COLUMN)75 Lisbon(COLUMN) clear(COLUMN) noon(COLUMN)57 London(COLUMN) rain(COLUMN)1 p.m.(COLUMN)45 Madrid(COLUMN) clear(COLUMN)1 p.m.(COLUMN)48 Malta(COLUMN) clear(COLUMN)1 p.m.(COLUMN)63 Manila(COLUMN) clear(COLUMN)8 p.m.(COLUMN)84 Moscow(COLUMN) clear(COLUMN)3 p.m.(COLUMN)59 New Delhi(COLUMN)pt. cldy(COLUMN)5 p.m.(COLUMN)90 Nice(COLUMN) cloudy(COLUMN)1 p.m.(COLUMN)54 Oslo(COLUMN)pt. cldy(COLUMN)1p.m.(COLUMN)32 Paris(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)43 Peking(COLUMN) clear(COLUMN)8 p.m.(COLUMN)59 Rome(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)52 Saigon(COLUMN) clear(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN) cloudy(COLUMN)2 p.m.(COLUMN)64 Stockholm(COLUMN) clear(COLUMN)1 p.m.(COLUMN)32 Sydney(COLUMN)pt. cldy(COLUMN)10 p.m.(COLUMN)59 Tel Aviv(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)75 Tokyo(COLUMN) rain(COLUMN)9 p.m.(COLUMN)48 Tunis(COLUMN) cloudy(COLUMN)1 p.m.(COLUMN)63 Vienna(COLUMN) rain(COLUMN)1 p.m.(COLUMN)39 Warsaw(COLUMN) rain(COLUMN)10 p.m.(COLUMN)34(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)pt. cldy(COLUMN)90(COLUMN)72 Barbados(COLUMN) clear(COLUMN)82(COLUMN)75 Bermuda(COLUMN) cloudy(COLUMN)68(COLUMN)62 Bogota(COLUMN) cloudy(COLUMN)68(COLUMN)50 Calgary(COLUMN)pt. cldy(COLUMN)77(COLUMN)41 Culiacan(COLUMN)pt. cldy(COLUMN)95(COLUMN)57 Edmonton(COLUMN) cloudy(COLUMN)77(COLUMN)43 Havana(COLUMN)pt. cldy(COLUMN)77(COLUMN)72 Kingston(COLUMN) clear(COLUMN)88(COLUMN)73 Montego Bay(COLUMN) clear(COLUMN)83(COLUMN)72 Mexico City(COLUMN)pt. cldy(COLUMN)79(COLUMN)44 Monterrey(COLUMN)pt. cldy(COLUMN)81(COLUMN)55 Montreal(COLUMN)pt. cldy(COLUMN)34(COLUMN)09 Nassau(COLUMN) clear(COLUMN)81(COLUMN)68 Ottawa(COLUMN) clear(COLUMN)28(COLUMN)14 Reginia(COLUMN)pt. cldy(COLUMN)82(COLUMN)39 St. Kitts(COLUMN) clear(COLUMN)84(COLUMN)75 St. Thomas(COLUMN)pt. cldy(COLUMN)85(COLUMN)74 Toronto(COLUMN) clear(COLUMN)28(COLUMN)18 Vancouver(COLUMN) rain(COLUMN)54(COLUMN)45 Veracruz(COLUMN) cloudy(COLUMN)76(COLUMN)68 Winnipeg(COLUMN) clear(COLUMN)59(COLUMN)37(END TABLE)