Washington: Today - Partly cloudy, high in mid to upper 50s, low in mid to upper 30s. Chance of precipitation 10 per cent today, 70 per cent tonight. Monday - Rain ending, high in mid to upper 40s.

Maryland and Virginia: Today - Partly cloudy, high in 50s, low in 30s. Rain is likely through area tonight with wet snow in western Maryland. Chance of rain in southern Virginia today. Monday - Rain ending, highs in 40s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy today with rain likely tonight. Visibility 3 to 6 miles today decreasing to less than 2 miles tonight with mostly southerly winds at 5 to 15 knots through tonight.

Extended Area Outlook: For Tuesday through Thursday - Fair skies through period with highs in upper 50s and 60s, lows in 30s to low 40s. Washington's normal temperature range for this time of year is from 52 to 33.

West Vriginia: Today - Cloudy, highs in upper 40s to upper 50s, lows in upper 20s to mid 30s. Rain likely in south this afternoon spreading northward across state during late afternoon and evening, chance of snow in northwest tonight. Monday - Precipitation, ending, highs in upper 30s to mid 40s.

The Nation Yesterday: Rain fell across much of the southeastern states and the lower Mississippi Valley yesterday evening due to a stationary front that stretched from northern Florida into the central Gulf of Mexico. By early evening, the northern edge of this area of rain had moved into Tennessee and North Carolina and moved slowly northward. A low pressure center was forecast to develop on the stationary front last night and move northward across the Atlantic Coast states spreading rain through the middle Atlantic Coast states by late this afternoon. Snow fell across portions of Michigan and western New York but most amounts reported were light. Only light snow showers continued across the mountains of New Mexico, where as much as four inches of snow fell earlier yesterday morning. Widely scattered snow showers were also noted over the Texas Panhandle. Temperatures warmed into the 50s and 60s across most of the Atlantic Coast states, the southeastern states, the southern half of the Plains, the southwestern states and the Pacific Coast states yesterday afternoon. Elsewhere, afternoon temperatures climbed into the 30s and 40s. Lowland flooding occurred or was forecast to occur along the lower Ohio River. The river is forecast to crest nearly three feet above flood stage late Wednesday afternoon near the confluence of Ohio and Mississippi Rivers.

The National Weather Forecast for Today - Rain will fall from the lower Mississippi Valley across the southeastern states, the southern Atlantic Coast states, the south and central Appalachians and Virginia with a few scattered thundershowers in the southeast portion of this area. Rain will also fall along the north Pacific Coast and snow will fall across portions of northern Maine and Upper Michigan. Elsewhere, fair or partly cloudy skies will prevail. It will be mild from Montana across the north and central Plains, the upper Mississippi Valley, the northern and central Atlantic Coast states, Florida and the southern Atlantic Coastal area. Unseasonably cool weather will continue across New Mexico and western Texas. Elsewhere, seasonable temperatures are expected.

ALMANAC DATA FOR Sunday March 6. Sun rises 6:34 a.m., sets 6:06 p.m.; moon rises 7:31 p.m., a.m. and 8:44 p.m., low 2:48 a.m. and 3:11 p.m. High and low tides at the following points can be obtained by subtracting the hours indicated from the tides above. Annapolis (3 1/4); Bloody Point Lighthouse (4 1/2); Deale, Md. (4 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (1); Solomon's Island (6 1/2); Point Lookout (7).

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 9 to 10 a.m. period was 18 for the pollutant, carbon monoxide. Index values between 0 and 24 indicate good air quality. When the index exceeds 100 the air becomes hazardous and persons with lung, heart and eye problems should restrict their activity. The forecast for today indicates the air quality will deteriorate slightly.

The National Weather Service forecasts that the Potomac River stage at Little Falls will rise to near 5 feet this morning.

Washington data at 7 p.m. (EST) yesterday: Highest temperature since 7 a.m. yesterday, 70 degrees at 2:40 p.m. Lowest temperatures since midnight, 44 degrees at 5:40 a.m. Excess of temperature since March 1, 37 degrees. Deficiency of temperature since Jan. 1, 220 degrees. Record high temperature for today, 31 degrees in 1961. Record low temperature for today, 10 degrees in 1888. Relative humidity: Maximum, 100 per cent at 8 a.m.; Minimum, 31 per cent at 6 p.m. 24 hour precipitation, none. Deficiency of precipitation since March 1, 46 inches. Excess of precipitation since Jan. 1, 3:37 inches. Highest observed wind since 7 a.m. 16 miles per hour from the west at 1:53 p.m. Peak gust since 7 a.m., 28 miles per hour from the west at 3:50 a.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid(COLUMN)59(COLUMN) 81 1 a.m.(COLUMN)55(COLUMN) 90 2 a.m.(COLUMN)53(COLUMN) 93 3 a.m.(COLUMN)50(COLUMN) 96 4 a.m.(COLUMN)48(COLUMN) 96 5 a.m.(COLUMN)46(COLUMN) 96 6 a.m.(COLUMN)44(COLUMN) 96 7 a.m.(COLUMN)45(COLUMN) 96 8 a.m.(COLUMN)47(COLUMN)100 10 a.m.(COLUMN)60(COLUMN) 78 11 a.m.(COLUMN)64(COLUMN) 63 12 noon(COLUMN)66(COLUMN) 59 1 p.m.(COLUMN)69(COLUMN) 46 2 p.m.(COLUMN)69(COLUMN) 35 3 p.m.(COLUMN)70(COLUMN) 32 4 p.m.(COLUMN)70(COLUMN) 32 5 p.m.(COLUMN)68(COLUMN) 33 6 p.m.(COLUMN)67(COLUMN) 31 7 p.m.(COLUMN)64(COLUMN) 33 8 p.m.(COLUMN)63(COLUMN) 31 9 p.m.(COLUMN)61(COLUMN) 32 10 p.m.(COLUMN)60(COLUMN) 34 11 p.m.(COLUMN)58(COLUMN) 36(END TABLE) Temperatures ending 7 p.m. (EST) yesterday:(TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)36(COLUMN)55 Albuquerque(COLUMN)27(COLUMN)41 Amarillo(COLUMN)24(COLUMN)43 Anchorage(COLUMN)15(COLUMN)22 Asheville(COLUMN)40(COLUMN)56 Atlanta(COLUMN)44(COLUMN)54 Atlantic City(COLUMN)43(COLUMN)53 Baltimore(COLUMN)39(COLUMN)70 Billings(COLUMN)23(COLUMN)47 Birmingham(COLUMN)37(COLUMN)56 Bismarck(COLUMN) 7(COLUMN)37 Boise(COLUMN)24(COLUMN)51 Boston(COLUMN)39(COLUMN)58 Bronwsville(COLUMN)60(COLUMN)66 Buffalo(COLUMN)33(COLUMN)37 Burlington, Vt.(COLUMN)33(COLUMN)41 Casper(COLUMN)17(COLUMN)32 Charleston, S.C.(COLUMN)57(COLUMN)64 Charleston, W.V.(COLUMN)44(COLUMN)58 Charlotte, N.C.(COLUMN)44(COLUMN)65 Cheyenne(COLUMN) 9(COLUMN)33 Chicago(COLUMN)32(COLUMN)39 Cincinnati(COLUMN)30(COLUMN)44 Columbia, S.C.(COLUMN)56(COLUMN)63 Columbia, Ohio(COLUMN)35(COLUMN)41 Dal.-Ft. Worth(COLUMN)36(COLUMN)52 Dayton(COLUMN)34(COLUMN)40 Denver(COLUMN)18(COLUMN)40 Des Monies(COLUMN)23(COLUMN)42 Detroit(COLUMN)35(COLUMN)36 Duluth(COLUMN)23(COLUMN)31 El Paso(COLUMN)35(COLUMN)45 Fairbanks(COLUMN)-9(COLUMN)-1 Fargo(COLUMN) 5(COLUMN)28 Flagstaff(COLUMN)16(COLUMN)38 Hartford(COLUMN)33(COLUMN)59 Helena(COLUMN)26(COLUMN)43 Houston(COLUMN)51(COLUMN)54 Jackson, Miss.(COLUMN)42(COLUMN)55 Jacksonville(COLUMN)61(COLUMN)70 Juneau(COLUMN)34(COLUMN)38 Kansas City(COLUMN)24(COLUMN)47 Las Vegas(COLUMN)37(COLUMN)62 Little Rock(COLUMN)35(COLUMN)52 Los Angeles(COLUMN)47(COLUMN)71 Louisville(COLUMN)34(COLUMN)53 Memphis(COLUMN)36(COLUMN)56 Miami Beach(COLUMN)72(COLUMN)79 Midland(COLUMN)36(COLUMN)51 Milwaukee(COLUMN)32(COLUMN)35 Nashville(COLUMN)34(COLUMN)57 New Orleans(COLUMN)52(COLUMN)57 New York(COLUMN)48(COLUMN)63 Norfolk(COLUMN)58(COLUMN)66 North Platte(COLUMN)10(COLUMN)41 Oklahoma City(COLUMN)28(COLUMN)51 Orlando(COLUMN)69(COLUMN)86 Phoenix(COLUMN)46(COLUMN)70 Pittsburgh(COLUMN)36(COLUMN)45 Portland, Ore.(COLUMN)29(COLUMN)60 Providence(COLUMN)43(COLUMN)62 Raleigh(COLUMN)49(COLUMN)64 Rapid City(COLUMN)17(COLUMN)40 Reno(COLUMN)19(COLUMN)59 St. Louis(COLUMN)33(COLUMN)47 St. Prbg.-Tampa(COLUMN)68(COLUMN)85 Salt Lake City(COLUMN)15(COLUMN)41 San Antonio(COLUMN)42(COLUMN)63 San Diego(COLUMN)49(COLUMN)72 San Francisco(COLUMN)49(COLUMN)69 San Juan, P.R.(COLUMN)75(COLUMN)85 St. Ste. Marie(COLUMN)24(COLUMN)29 Seattle(COLUMN)39(COLUMN)55 Shreveport(COLUMN)40(COLUMN)57 Spokane(COLUMN)30(COLUMN)51 Syracuse(COLUMN)37(COLUMN)47 Tucson(COLUMN)34(COLUMN)61 Tulsa(COLUMN)30(COLUMN)52 Washington(COLUMN)44(COLUMN)70 Wichita(COLUMN)21(COLUMN)53(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)T. Aberdeen(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)50 Amsterdam(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)50 Ankara(COLUMN) cloudy(COLUMN) 3 p.m.(COLUMN)41 Athens(COLUMN) clear(COLUMN) 2 p.m.(COLUMN)61 Auckland(COLUMN) clear(COLUMN)midnight(COLUMN)68 Berlin(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)46 Birmingham(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)48 Brussels(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)46 Cairo(COLUMN) clear(COLUMN) 2 p.m.(COLUMN)73 Casablanca(COLUMN)pt. cldy(COLUMN) noon(COLUMN)77 Copenhagen(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)45 Dublin(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)50 Geneva(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)55 Hong Kong(COLUMN) clear(COLUMN) 8 p.m.(COLUMN)59 Lisbon(COLUMN)pt. cldy(COLUMN) noon(COLUMN)66 London(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)52 Madrid(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)66 Malta(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)66 Manila(COLUMN) clear(COLUMN) 8 p.m.(COLUMN)72 Moscow(COLUMN) snow(COLUMN) 3 p.m.(COLUMN)32 New Delhi(COLUMN) clear(COLUMN) 5 p.m.(COLUMN)81 Nice(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)59 Oslo(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)36 Paris(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)52 Peking(COLUMN) clear(COLUMN) 8 p.m.(COLUMN)34 Rome(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)59 Saigon(COLUMN) clear(COLUMN) 8 p.m.(COLUMN)79 Sofia(COLUMN) cloudy(COLUMN) 2 p.m.(COLUMN)41 Stockholm(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)36 Sydney(COLUMN) clear(COLUMN)10 p.m.(COLUMN)73 Tel Aviv(COLUMN) cloudy(COLUMN) 2 p.m.(COLUMN)63 Tokyo(COLUMN) clear(COLUMN) 9 p.m.(COLUMN)32 Tunis(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)73 Vienna(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)46 Warsaw(COLUMN) rain(COLUMN) 1 p.m.(COLUMN)41(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN) clear(COLUMN)83(COLUMN)72 Barbados(COLUMN) sunny(COLUMN)82(COLUMN)75 Bermuda(COLUMN) cloudy(COLUMN)68(COLUMN)62 Bogota(COLUMN) cloudy(COLUMN)64(COLUMN)50 Calgary(COLUMN) clear(COLUMN)41(COLUMN)18 Culiacan(COLUMN) fair(COLUMN)81(COLUMN)44 Edmonton(COLUMN) clear(COLUMN)37(COLUMN)18 Havana(COLUMN) cloudy(COLUMN)86(COLUMN)70 Montego Bay(COLUMN) sunny(COLUMN)86(COLUMN)71 Mexico City(COLUMN) clear(COLUMN)81(COLUMN)54 Monterrey(COLUMN) cloudy(COLUMN)72(COLUMN)44 Montreal(COLUMN) rain(COLUMN)34(COLUMN)23 Nassau(COLUMN)pt. cldy(COLUMN)81(COLUMN)71 Ottawa(COLUMN) rain(COLUMN)30(COLUMN)23 Regina(COLUMN) clear(COLUMN)39(COLUMN) 7 St. Kitts(COLUMN)pt. cldy(COLUMN)84(COLUMN)69 St. Thomas(COLUMN) sunny(COLUMN)85(COLUMN)74 Toronto(COLUMN)pt. cldy(COLUMN)41(COLUMN)32 Vancouver(COLUMN) rain(COLUMN)45(COLUMN)39 Veracruz(COLUMN)pt. cldy(COLUMN) 81(COLUMN)63 Winnipeg(COLUMN) clear(COLUMN)25(COLUMN)-4(END TABLE)