Washington: Today - Rain, high near 50, low in 30s. Chance of preciptation 70 per cent today, 10 per cent tonight. Monday - Sunny, high in mid to upper 50s.

Maryland: Today - Rain and snow, highs in 40s, lows in 20s and 30s. Rain should end by evening in east, snow by noon in west. Monday - Sunny, highs in 40s and 50s.

Virginia: Today - Rain, highs in 40s to mid 50s, lows in 30s. Rain should end in west by late morning and in east by evening.

Lower Potomac and Chesapeake Bay: Today - Chance of rain or wet snow ending by tonight. Visibility should be from 5 miles or more to 2 miles or less. Winds should be southernly at 10 to 20 knots today becoming northwesterly at 12 to 25 knots late today through tonight.

Extended Area Outlook: For Tuesday through Thursday - Chance of precipitation Tuesday night with fair skies through remainder of period. Highs should average in upper 40s to 50s, lows in upper 20s to 30s. Washington's normal temperature range for this time of year is from 58 to 37.

West Virginia: Today - Rain, high in 40s, low in 20s. Rain is likely through state this morning ending during afternoon. Chance of snow flurries in north tonight. Monday - partly cloudy, highs in mid 40s to low 50s.

The Nation Yesterday: A late winter storm continued to force its way eastward. Heavy snow warnings were posted last night over the area around lower Lake Michigan and Lake Eric. Travelers advisories extend from east Nebraska across Iowa, south Minnesota, north east Missouri, south Wisconsin central Illinosi, a portion of north Indiana and the north portion of Lower Michigan. As much as 3 inches of snow should fall through the area and will be a hazard to travel. This storm dropped as much as 14 inches of wet snow at Shelton, Neb., about 25 miles southwest of Granu Island. A heavy snow warming also warning also was rosted over the northwest mountains of Wyoming last night through this morning. A travelers advisery covered the northern Colorado mountains during that same time. A travelers advisory last night warned of locally heavy snow through southeast Idaho. Advisories to stockmen and travelers were also posted over the west Montana mountains and foothills. A freeze warning was posted for last night over west and central Oklahoma. Afternoon temperatures had reached into the mid 80s in that area earlier this week. During the afternoon snowshowers extended through much of the northern Rockies.Snow through the northern Plains to the west end of the Great Lakes changed to rain showers and occasional thunder-showers from the east portion of the central Plains to the Ohio Valley. Showers and thunderstorms extended southwest reaching from east Texas through Georgia and South Carolina.

The National Weather Forecast for Today - Snow will continue along the central and lower Great Lakes into north portions of the Ohio Valley. Rainshowers will extend from central Waive to north Florida, across the Appalachians through much of the Ohio Valley, across the central Plains into the central Rockies. Snow will extend through the higher elevations. Showers will also remain over the Pacific northwest. Temperatures will be cool or cold over most of the nation. It will be mild through Florida.

Alamanac data for Sunday, March 20: Sun rises 6:12 a.m., sets 6:20 p.m.; moon rises 6:29 a.m., sets 7:27 p.m. Tides: High 8:39 a.m. and 8:58 p.m., low 2:52 a.m. and 3:17 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 National Weather Service forecasts that the Potomac River stage at Little Falls will remain nera 5.0 feet through today.

Washington data at 7 p!m. (EST) yesterday: Highest temperature since 7 a.m. yesterday, 55 degrees at 3:05 p.m. Lowest temperature since midnight, 39 degrees at 6:35 a.m. Excess of temperature since March 1, 196 degrees. Deficiency of temperature since Jan. 1, 61 degrees. Record high temperature for today, 83 degrees in 1945. Record low temperature for today, 12 degrees in 1885. Relative humidity: Maximum, 60 per cent at 3 a.m.; Minimum, 32 per cent at 4 p.m. 24 hour precipitation, none. Deficiency of precipitation since March 1, .99 inches. Deficiency of precipitation since Jan. 1, 3.90 inches. Highest observed wind since 7 a.m. 20 miles per hour from the N.W. at 7:53 a.m. Peak oust since 7 a.m., 36 miles per hour from the N.W. at 7:03 a.m. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)54(COLUMN)47 1 a.m.(COLUMN)51(COLUMN)54 2 a.m.(COLUMN)47(COLUMN)58 3 a.m.(COLUMN)45(COLUMN)60 5 a.m.(COLUMN)43(COLUMN)58 6 a.m.(COLUMN)43(COLUMN)45 6 a.m.(COLUMN)41(COLUMN)57 7 a.m.(COLUMN)39(COLUMN)57 8 a.m.(COLUMN)40(COLUMN)53 10 a.m.(COLUMN)45(COLUMN)45 11 a.m.(COLUMN)47(COLUMN)42 12 noon(COLUMN)49(COLUMN)41 1 p.m.(COLUMN)51(COLUMN)39 2 p.m.(COLUMN)52(COLUMN)38 3 p.m.(COLUMN)54(COLUMN)35 4 p.m.(COLUMN)44(COLUMN)58 5 p.m.(COLUMN)54(COLUMN)32(END TABLE) Temperatures ending 7 p.m. (EST) yesterday:(TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)(COLUMN)37 Albuquerque(COLUMN)(COLUMN)56 Amanillo(COLUMN)31(COLUMN)59 Anchorage(COLUMN)22(COLUMN)33 Asheville(COLUMN)41(COLUMN)59 Atlanta(COLUMN)5(COLUMN)73 Atlantic City(COLUMN)31(COLUMN)46 Austin(COLUMN)55(COLUMN)60 Baltimore(COLUMN)37(COLUMN)54 Billings(COLUMN)26(COLUMN)37 Birmingham(COLUMN)55(COLUMN)73 Bismarck(COLUMN)(COLUMN)42 Boise(COLUMN)32(COLUMN)49 Boston(COLUMN)(COLUMN)43 Brownsville(COLUMN)71(COLUMN)45 Buffalo(COLUMN)17(COLUMN)36 Burlington, Vt.(COLUMN)24(COLUMN)38 Casper(COLUMN)(COLUMN)37 Charltn, S.C.(COLUMN)63(COLUMN)70 Charltn, W.Va.(COLUMN)37(COLUMN)47 Charlotte, N.C.(COLUMN)50(COLUMN)61 Cheyenne(COLUMN)12(COLUMN)38 Chicago(COLUMN)22(COLUMN)42 Cincinnatl(COLUMN)34(COLUMN)42 Cleveland(COLUMN)26(COLUMN)41 Columbia, S.C.(COLUMN)51(COLUMN)51 Columbus, Ohio(COLUMN)31(COLUMN)42 Dal.-Ft. Worth(COLUMN)65(COLUMN)71 Dayton(COLUMN)(COLUMN) Denver(COLUMN)24(COLUMN)50 Des Moines(COLUMN)26(COLUMN)39 Detroit(COLUMN)15(COLUMN)40 Duluth(COLUMN)22(COLUMN)40 El Paso(COLUMN)36(COLUMN)64 Fairbanks(COLUMN)03(COLUMN)23 Fargo(COLUMN)23(COLUMN)45 Flagstaff(COLUMN)10(COLUMN)51 Great Falls(COLUMN)22(COLUMN)27 Hartford(COLUMN)38(COLUMN)42 Helena(COLUMN)22(COLUMN)29 Honolulu(COLUMN)64(COLUMN)84 Houston(COLUMN)65(COLUMN)82 Indianapolis(COLUMN)33(COLUMN)63 Jackson, Miss.(COLUMN)58(COLUMN)75 Jacksonville(COLUMN)68(COLUMN)87 Juneau(COLUMN)27(COLUMN)36 Kansas City(COLUMN)37(COLUMN)45 Las Vegas(COLUMN)35(COLUMN)68 Little Rock(COLUMN)49(COLUMN)63 Los Angeles(COLUMN)46(COLUMN)68 Louisville(COLUMN)40(COLUMN)43 Memphis(COLUMN)52(COLUMN)66 Miami Beach(COLUMN)70(COLUMN)84 Midland(COLUMN)46(COLUMN)66 Milwaukee(COLUMN)12(COLUMN)37 Mpls. St. Paul(COLUMN)20(COLUMN)44 Nashville(COLUMN)41(COLUMN)54 New Orleans(COLUMN)69(COLUMN)81 New York(COLUMN)29(COLUMN)46 Norfolk(COLUMN)47(COLUMN)53 North Platte(COLUMN)29(COLUMN)40 Oklahona City(COLUMN)45(COLUMN)65 Omaha(COLUMN)35(COLUMN) Orlando(COLUMN)66(COLUMN)86 Philadelphia(COLUMN)31(COLUMN)49 Phoenix(COLUMN)43(COLUMN)76 Pittsburgh(COLUMN)29(COLUMN)44 Portland, Me.(COLUMN)25(COLUMN)37 Portland, Ore.(COLUMN)43(COLUMN)50 Providence(COLUMN)30(COLUMN)43 Raleigh(COLUMN)27(COLUMN)61 Rapid City(COLUMN)20(COLUMN)43 Reno(COLUMN)24(COLUMN)57 Richmond(COLUMN)45(COLUMN)58 St. Louis(COLUMN)28(COLUMN)51 St. Petersburg(COLUMN)72(COLUMN)84 Salt Lake City(COLUMN)30(COLUMN)51 San Antonio(COLUMN)54(COLUMN)82 San Diego(COLUMN)47(COLUMN)64 San Francisco(COLUMN)48(COLUMN)59 San Juan, P.R.(COLUMN)69(COLUMN)85 St. Ste. Marie(COLUMN)15(COLUMN)33 Seattle(COLUMN)42(COLUMN)51 Shreveport(COLUMN)52(COLUMN)67 Sioux Falls(COLUMN)24(COLUMN)37 Spokane(COLUMN)32(COLUMN)45 Syracuse(COLUMN)17(COLUMN)36 Tucson(COLUMN)34(COLUMN)72 Tulsa(COLUMN)51(COLUMN)64 Washington(COLUMN)39(COLUMN)53 Wichita(COLUMN)39(COLUMN)60(END TABLE)