Washington: Today -- Rain, possibly changing to snow flurries before ending, high near 50, to 20. The chance of precipitation is 80 percent today, diminishing to near zero tonight. Winds will shift to the northwest at 15 to 25 mph. Tuesday -- Fair and colder, high near 30.

Marland and Virginia: Today -- Rain, possibly changing to light snow or snow flurries before ending, high near 50, lows mostly in the teens. Tuesday -- Fair and colder, high from the 20s to the low 30s.

West Virginia: Today -- Blustery and cold with periods of light snow, temperatures will fall into the teens and 20s. Tuesday -- Partly cloudy, high in the 20s.

Extended Area Forecast for Wednesday through Friday -- Fair Wednesday with a chance of precipitation on Thursday and Friday. Highs will average in the 30s, lows in the 20s. Normal Washington temperatures are a high of 43 and a low of 28.

Lower Potomac and Chesapeake Bay -- Rain ending by late morning then becoming fair. Visibility will be less than 1 mile in morning fog and rain increasing to 5 milles or more by afternoon. Winds will shift to the northwest at 15 to 25 knots. Waves will build to near 2 feet.

The Nation Yesterday: A winter storm system spread precipitation over most of the nation east of the Mississippi River. Snow fell from lower Michigan through northern Ohio, the lower Great Lakes region, and into northern New England. A narrow ban of freezing rain, freezing drizzle and sleet stretched from central Tennessee through southeastern Ohio, across the western half of Pennsylvania, and into southern New England. Rand and drizzle covered much of the remainder of the eastern third of the nation from the Florida panhandle to southeastern Louisiana and northward across the remainder of the south and middle Atlantic Coast states. Winter storm warnings are posted for today across Vermont, New York and interior portions of New Hampshire and Maine.

The National Weather Forecast for Today -- Snow or snowshowers will reach from the upper Ohio Valley through the lower Great Lakes region to northern Maine. Rain will fall along the Atlantic Coast from North Carolina to southern Maine, across central Florida, and over the central and southern Pacific Coast. Mostly cloudy skies will reach from the Great Basin into Oregon, across the southern half of Texas through Louisiana, from notthern Florida into Ohio and over the upper Mississippi Valley. Elsewhere mostly sunny conditions are forecast. Temperatures will be mild along the northern two thirds of the Atlantic Coast as opposed to very cold readings in the northern Rockies, the southern half of the Plains, the middle and lower Mississippi Valley and from the lower Ohio Valley southward through the Florida panhandle. The remainder of the nation will be seasonably cold.

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 10 a.m. period was 6 for the pollutant, photochemical oxidants. Index values between 0 and 24 indicate good air quality. When the index exceeds 100 the air is considered very unhealthy and individuals with lung, heart and eye ailments are urged to restrict their activity. The forecast for today indicates that the air quality will remain good.

The National Weather Service forecasts the Potomac River stage at Little Falls should rise from 4.9 feet to near 5.7 feet today.

Washington data for yesterday: Highest temperature since midnight yeaterday, 47 degrees at 3:30 p.m. Lowest temperature since midnight, 35 degrees at 12:01 a.m. Excess of temperature since Jan. 1, 9 degress. Record high temperature for today, 69 degrees in 1937. Record low temperature for today, zero in 1878. Relative humidity: maximum, 96 percent at 4 p.m.; minimum, 79 percent at 1 a.m. 24-hour precipitation,.78 inches. Excess of precipitation since Jan. 1, 1.88 inches. Highest observed wind since 7 a.m.; 9 miles per hour from the south at 11:27 a.m. Peak gust since 7 a.m., 14 miles per hour from the southeast at 10:25 a.m.

Local Temp., Humidity (TABLE) Time(COLUMN)T.(COLUMN)H. 12 m'night(COLUMN)35(COLUMN)85 1 a.m.(COLUMN)35(COLUMN)79 2 a.m.(COLUMN)35(COLUMN)85 3 a.m.(COLUMN)36(COLUMN)85 4 a.m.(COLUMN)36(COLUMN)85 5 a.m.(COLUMN)36(COLUMN)82 6 a.m.(COLUMN)37(COLUMN)82 7 a.m.(COLUMN)37(COLUMN)89 8 a.m.(COLUMN)38(COLUMN)89 9 a.m.(COLUMN)39(COLUMN)89 10 a.m.(COLUMN)39(COLUMN)82 11 a.m.(COLUMN)41(COLUMN)89 12 noon(COLUMN)43(COLUMN)86 1 p.m.(COLUMN)43 $79 2 p.m.(COLUMN)45(COLUMN)89 3 p.m.(COLUMN)45(COLUMN)80 4 p.m.(COLUMN)44(COLUMN)96 5 p.m.(COLUMN)46(COLUMN)96 6 p.m.(COLUMN)46(COLUMN)93 7 p.m.(COLUMN)45(COLUMN)89 8 p.m.(COLUMN)45(COLUMN)93 9 p.m.(COLUMN)46(COLUMN)89 10 p.m.(COLUMN)45(COLUMN)93 11 p.m.(COLUMN)45(COLUMN)96(END TABLE)

Temperatures ending 7 p.m. (EST) yesterday: (TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)05(COLUMN)33 Albuquerque(COLUMN)34(COLUMN)48 Amarillo(COLUMN)10(COLUMN)16 Anchorage(COLUMN)14(COLUMN)27 Asheville(COLUMN)43(COLUMN)54 Atlanta(COLUMN)45(COLUMN)60 Atlantic City(COLUMN)30(COLUMN)49 Austin(COLUMN)31(COLUMN)35 Baltimore(COLUMN)33(COLUMN)38 Billings(COLUMN)-03(COLUMN)10 Birmingham(COLUMN)41(COLUMN)62 Bismarck(COLUMN)-09(COLUMN)00 Boise(COLUMN)-10(COLUMN)17 Boston(COLUMN)28(COLUMN)37 Brownsville(COLUMN)43(COLUMN)51 Buffalo(COLUMN)18(COLUMN)22 Burlington, Vt.(COLUMN)11(COLUMN)25 Casper(COLUMN)-14(COLUMN)09 Charleston, S. C.(COLUMN)49(COLUMN)63 Charleston, W. V.(COLUMN)33(COLUMN)36 Charlotte(COLUMN)40(COLUMN)57 Cheyenne(COLUMN)-09(COLUMN)16 Chicago(COLUMN)05(COLUMN)16 Cincinnati(COLUMN)20(COLUMN)22 Cleveland(COLUMN)12(COLUMN)23 Columbia, S. C.(COLUMN)43(COLUMN)64 Columbus(COLUMN)19(COLUMN)22 Dal.-Ft. Worth(COLUMN)27(COLUMN)30 Dayton(COLUMN)17(COLUMN)21 Denver(COLUMN)00(COLUMN)21 Des Moines(COLUMN)-01(COLUMN)11 Defroit(COLUMN)06(COLUMN)21 Duluth(COLUMN)-12(COLUMN)03 El Paso(COLUMN)45(COLUMN)59 Evansville(COLUMN)18(COLUMN)22 Fairbanks(COLUMN)-18(COLUMN)-13 Fargo(COLUMN)-18(COLUMN)03 Flagstaff(COLUMN)22(COLUMN)38 Great Falls(COLUMN)-04(COLUMN)16 Hartford(COLUMN)19(COLUMN)32 Helena(COLUMN)-24(COLUMN)-08 Honolulu(COLUMN)65(COLUMN)79 Houston(COLUMN)35(COLUMN)42 Indianapolis(COLUMN)14(COLUMN)20 Jackson(COLUMN)32(COLUMN)41 Jacksonville(COLUMN)49(COLUMN)71 Juneau(COLUMN)-04(COLUMN)18 Kansas City(COLUMN)05(COLUMN)14 Las Vegas(COLUMN)37(COLUMN)51 Little Rock(COLUMN)25(COLUMN)28 Los Angeles(COLUMN)49(COLUMN)64 Louisville(COLUMN)22(COLUMN)29 Memphis(COLUMN)26(COLUMN)29 Miami Beach(COLUMN)72(COLUMN)75 Midland(COLUMN)25(COLUMN)29 Milwaukee(COLUMN)00(COLUMN)12 Mpls.-St. Paul(COLUMN)-07(COLUMN)06 Nashville(COLUMN)26(COLUMN)35 New Orleans(COLUMN)45(COLUMN)63 New York(COLUMN)31(COLUMN)49 Norfolk(COLUMN)40(COLUMN)64 North Platte(COLUMN)-23(COLUMN)07 Oklahoma City(COLUMN)17(COLUMN)20 Omaha(COLUMN)00(COLUMN)07 Orlando(COLUMN)55(COLUMN)82 Philadelphia(COLUMN)30(COLUMN)51 Phoenix(COLUMN)48(COLUMN)60 Pittsburgh(COLUMN)23(COLUMN)28 Portland, Me.(COLUMN)08(COLUMN)28 Portland, Ore.(COLUMN)17(COLUMN)29 Providence(COLUMN)23(COLUMN)40 Raleigh(COLUMN)42(COLUMN)63 Rapid City(COLUMN)-02(COLUMN)13 Reno(COLUMN)24(COLUMN)33 Richmond(COLUMN)36(COLUMN)56 St. Louis(COLUMN)13(COLUMN)18 St. Prbg. Tampa(COLUMN)62(COLUMN)78 Salt Lake City(COLUMN)03(COLUMN)26 San Antonio(COLUMN)33(COLUMN)40 San Diego(COLUMN)59(COLUMN)64 San Francisco(COLUMN)50(COLUMN)52 San Juan(COLUMN)75(COLUMN)84 St. Ste. Marie(COLUMN)-15(COLUMN)10 Seattle(COLUMN)33(COLUMN)47 Shreveport(COLUMN)35(COLUMN)36 Sioux Falls(COLUMN)-08(COLUMN)03 Spokane(COLUMN)-13(COLUMN)08 Syracuse(COLUMN)04(COLUMN)27 Topeka(COLUMN)01(COLUMN)15 Tucson(COLUMN)45(COLUMN)59 Tulsa(COLUMN)17(COLUMN)23 Washington(COLUMN)35(COLUMN)47 Wichita(COLUMN)08(COLUMN)16(END TABLE)

Temperatures Abroad Yesterday (TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Amsterdam(COLUMN)couldy(COLUMN)1 p.m.(COLUMN)37 Athens(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)21 Brussels(COLUMN)clear(COLUMN)1 p.m.(COLUMN)37 Cairo(COLUMN)clear(COLUMN)5 p.m.(COLUMN)68 Copenhagen(COLUMN)cloudy(COLUMN)noon(COLUMN)28 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)32 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)72 Jerusalem(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)52 Lisbon(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 London(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Madrid(COLUMN)rain(COLUMN)1 p.m.(COLUMN)48 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)80 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)-11 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)75 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)19 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)28 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)27 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)82 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)45 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)23(END TABLE)

Temperatures (Western Hemisphere) (TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)90(COLUMN)64 Barbados(COLUMN)fair(COLUMN)81(COLUMN)68 Bermuda(COLUMN)fair(COLUMN)70(COLUMN)68 Bogots(COLUMN)pt. cldy.(COLUMN)68(COLUMN)45 Havana(COLUMN)clear(COLUMN)81(COLUMN)66 Kingston(COLUMN)fair(COLUMN)86(COLUMN)72 Monteao Bay(COLUMN)fair(COLUMN)82(COLUMN)72 Mexico City(COLUMN)fair(COLUMN)73(COLUMN)37 Monterrey(COLUMN)cloudy(COLUMN)68(COLUMN)44 Nassau(COLUMN)fair(COLUMN)77(COLUMN)66 St. Kitts(COLUMN)pt. cldy.(COLUMN)82(COLUMN)72 Vancouver(COLUMN)clear(COLUMN)41(COLUMN)19 Vera Cruz(COLUMN)fair(COLUMN)77(COLUMN)63(END TABLE)