Washington: Today - Snow this morning changing to rain this afternoon and evening, highs in mid 30s, lows near 30. Chance of precipitation 70 per cent through tonight. Saturday - Rain ending, highs in 30s.

Maryland and Virginia: Today - Rain and snow, highs in 30s to low 40s, lows in mid 20s to upper 30s. Saturday - Rain ending, highs in 30s and 40s.

Lower Potomac and Chesapeake Bay: Today - Rain likely with visibility less than 5 miles. Winds should be southerly at 8 to 15 knots today, out of south or southwest 10 to 20 knots this evening becoming northerly at 10 to 18 knots late tonight.

Extended Area Outlook: For Sunday through Tuesday - Snow likely in mountains and chance of snow through rest of area Sunday followed by fair skies through Tuesday through area. Highs should average in mid 20s to mid 30s, lows in teens through period. Washington's normal temperature range for this time of year is 44 to 28.

The Nation Yesterday: The combination of frontal systems over the Gulf Coast and central Plains caused a wide area of wet weather through the central portion of the country last night. An area of freezing rain and drizzle made traveling conditions hazardous in the middle Mississippi Valley and lower Ohio Valley while snow extended north into the Great Lakes region. Rain and drizzle were widespread from the eastern parts of Texas and Oklahoma into the lower Mississippi Valley. Ice storm or freezing rain warnings were issued last night for Kentucky, southeast Missouri and the southern portions of Illinois and Indiana. Travelers advisories and winter storm warnings for combinations of snow, freezing rain and sleet were in effect for other parts of Missouri, Illinois and Indiana, as well as for all of Arkansas, Michigan and Ohio. Other travelers advisories were in effect for eastern Iowa and parts of Pennsylvania, Virginia, West Virginia and Maryland. Snowfall reports since early yesterday morning included 4 inches at St. Louis, Mo., Springfield Ill., Peoria, Ill., and Green Bay, Wis., and 3 inches at Mustegon and Escanaba, Mich. Significant rains occurred in parts of eastern Texas and the lower Mississippi Valley yesterday where a few thundershowers also occurred. Some light snow also fell during the day over southern Idaho and northern Nevada. Temperatures moderated a bit over the north central U.S. yesterday but still only managed to reach the single numbers near the Canadian border. International Falls, Minn., reach 3 degrees yesterday afternoon, the first time the temperature has been above zero since Thuraday of last week.

The National Weather Forecast for Today - Snow will spread from the Great Lakes and northern Ohio Valley to the northern Atlantic Coast states. Rain will be widespread from eastein Texas and lower half of the Mississippi Valley to the central and south Atlantic Coast. Some thundershowers will also occur along the central and eastern Gulf Coast. Snow will spread from the northern plateau and northern Rockies across North Dakota into the extreme northern part of the Mississippi Valley. Showers will fall in western Washington. Fog will also be present over the northern portions of the Pacific Coast and plateau. Fair weather will stretch from the central Plains into California. Seasonably cold temperatures are expected in most parts of the nation.

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 to 3 p.m. period was 22 for the pollutant, sulfur dioxide. 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 remain about the same.

The National Weather Service forecasts that the Potomac River stage at Little Falls will remain near 3.3 feet through today.

Washington data at 7 p.m. (EST) yesterday: Highest temperature since 7 p.m. yesterday, 25 degrees at 3:10 p.m. Lowest temperature since midnight, 9 degrees at 7:30 a.m. Record high temperature for today, 76 degrees in 1932. Record low temperature for today - 13 degrees in 1912. Deficiency of temperature since Jan. 1, 126 degrees. Relative humidity: Maximum, 64 per cent at 9 a.m. Minimum, 42 per cent at 1 p.m. 24 hour precipitation, none. Deficiency of precipitation since Jan. 1, .27 inches. Highest observed wind since 7 a.m. 9 miles per hour from the S.S.E. at 2:53 p.m. Peak gust since 7 a.m. 16 miles per hour from the West at 10:54 a.m. Local Temp. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 1 a.m.(COLUMN)14(COLUMN)53 2 a.m.(COLUMN)13(COLUMN)56 3 a.m.(COLUMN)13(COLUMN)56 4 a.m.(COLUMN)13(COLUMN)56 5 a.m.(COLUMN)12(COLUMN)58 6 a.m.(COLUMN)11(COLUMN)61 7 a.m.(COLUMN)12(COLUMN)58 8 a.m.(COLUMN)10(COLUMN)63 9 a.m.(COLUMN)13(COLUMN)64 10 a.m.(COLUMN)18(COLUMN)51 11 a.m.(COLUMN)19(COLUMN)49 12 mid(COLUMN)15(COLUMN)51 12 noon(COLUMN)21(COLUMN)45 1 p.m.(COLUMN)24(COLUMN)42 2 p.m.(COLUMN)24(COLUMN)44 3 p.m.(COLUMN) 24(COLUMN)48 4 p.m.(COLUMN)25(COLUMN)44 5 p.m.(COLUMN)24(COLUMN)44 6 p.m.(COLUMN)25(COLUMN)44 7 p.m.(COLUMN)24(COLUMN)50 8 p.m.(COLUMN)23(COLUMN)50 9 p.m.(COLUMN)23(COLUMN)52 10 p.m.(COLUMN)24(COLUMN)52 11 p.m.(COLUMN)24(COLUMN)57(END TABLE) Temperatures ending 7 p.m. (EST) yesterday:(TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)-10(COLUMN)19 Albuquerque(COLUMN)09(COLUMN)40 Amarillo(COLUMN)29(COLUMN)42 Anchorage(COLUMN)14(COLUMN)23 Asheville(COLUMN)07(COLUMN)36 Atlanta(COLUMN)28(COLUMN)45 Atlantic City(COLUMN)13(COLUMN)25 Austin(COLUMN)41(COLUMN)46 Baltimore(COLUMN)06(COLUMN)23 Billings(COLUMN)18(COLUMN)32 Birmingham(COLUMN)29(COLUMN)50 Bismark(COLUMN)-01(COLUMN)12 Boise(COLUMN)19(COLUMN)28 Boston(COLUMN)08(COLUMN)20 Brownsville(COLUMN)55(COLUMN)64 Buffalo(COLUMN)05(COLUMN)11 Burlington, Vt.(COLUMN)-17(COLUMN)06 Casper(COLUMN)17(COLUMN)35 Charleston, SC(COLUMN)34(COLUMN)42 Charleston, WV(COLUMN)-03(COLUMN)31 Charlotte, NC 39(COLUMN)38 Cheyenne(COLUMN)19(COLUMN)40 Chicago(COLUMN)-05(COLUMN)22 Cincinnati(COLUMN)-04(COLUMN)22 Cleveland(COLUMN)-10(COLUMN)15 Columbia, SC(COLUMN)26(COLUMN)48 Columbus, O(COLUMN)-14(COLUMN)19 Dal-Ft. Worth(COLUMN)32(COLUMN)37 Dayton(COLUMN)-08(COLUMN)22 Denver(COLUMN)23 45 Des Moines(COLUMN)11(COLUMN)35 Detroit(COLUMN)-09(COLUMN)13 Duluth(COLUMN)-06(COLUMN)09 El Paso(COLUMN)31(COLUMN)55 Fairbanks(COLUMN)-20(COLUMN)03 Fargo(COLUMN)-08(COLUMN)03 Flagstaff(COLUMN)00(COLUMN)42 Great Falls(COLUMN)11(COLUMN)36 Hartford(COLUMN)05(COLUMN)20 Helena(COLUMN)28(COLUMN)37 Honolulu(COLUMN)65(COLUMN)80 Houston(COLUMN)47(COLUMN)64 Indianapolis(COLUMN)-07(COLUMN)20 Jackson, Mis(COLUMN)27(COLUMN)52 Jacksonville(COLUMN)34(COLUMN)63 Juneau(COLUMN)33(COLUMN)37 Kansas City(COLUMN)27(COLUMN)33 Las Vegas(COLUMN)27(COLUMN)55 Little Rock(COLUMN)18(COLUMN)34 Los Angeles(COLUMN)46(COLUMN)65 Louisville(COLUMN)-01(COLUMN)30 Memphis(COLUMN)25(COLUMN)42 Miami Beach(COLUMN)65(COLUMN)69 Midland(COLUMN)40(COLUMN)60 Milwaukee(COLUMN)-04(COLUMN)19 Mpis St. Paul(COLUMN)00(COLUMN)15 Nashville(COLUMN)10(COLUMN)40 New Orleans(COLUMN)42(COLUMN)53 New York(COLUMN)10(COLUMN)22 Norfolk(COLUMN)19(COLUMN)26 North Platte(COLUMN)09(COLUMN)36 Oklahoma City(COLUMN)33(COLUMN)35 Omaha(COLUMN)18(COLUMN)34 Orlanda(COLUMN)46(COLUMN)68 Philadephia(COLUMN)05(COLUMN)21 Phoenix(COLUMN)34(COLUMN)62 Pittsburgh(COLUMN)-10(COLUMN)15 Portland, Ma.(COLUMN)-11(COLUMN)13 Portland, Ore.(COLUMN)34(COLUMN)47 Providence(COLUMN)84(COLUMN)19 Raleigh(COLUMN)11(COLUMN)33 Rapid City(COLUMN)05(COLUMN)31 Rena(COLUMN)16(COLUMN)43 Richmond(COLUMN)07(COLUMN)28 St. Louis(COLUMN)03(COLUMN)31 St.Prbo-T'mpa(COLUMN)47(COLUMN)71 Salt Lake City(COLUMN)24(COLUMN)35 San Antonio(COLUMN)42(COLUMN)55 San Diego(COLUMN)48(COLUMN)65 San Francisco(COLUMN)44(COLUMN)49 San Juan, PR(COLUMN)75(COLUMN)84 St Ste Marie(COLUMN)-16(COLUMN)07 Seattle(COLUMN)42(COLUMN)49 Shreveport(COLUMN)34(COLUMN)45 Stoux Falls(COLUMN)11(COLUMN)18 Spokana(COLUMN)18(COLUMN)26 Syracuse(COLUMN)04(COLUMN)14 Tucson(COLUMN)33(COLUMN)60 Tulsa(COLUMN)30(COLUMN)34 Washington(COLUMN)09(COLUMN)25 Wright(COLUMN)32(COLUMN)36(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)28 Amsterdam(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)32 Ankara(COLUMN) cloudy(COLUMN) 3 p.m.(COLUMN)32 Athens(COLUMN)pt.cldy(COLUMN) 2 p.m.(COLUMN)61 Auckland(COLUMN)pt.cldy(COLUMN)midnight(COLUMN)61 Berlin(COLUMN) snow(COLUMN) 1 p.m.(COLUMN)30 Birmingham(COLUMN) snow(COLUMN) 1 p.m.(COLUMN)32 Brussels(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)36 Cairo(COLUMN) clear(COLUMN) 2 p.m.(COLUMN)65 Casablanca(COLUMN)pt.cldy(COLUMN) noon(COLUMN)59 Copenhagen(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)30 Dublin(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)34 Geneva(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)32 Hong Kong(COLUMN) cloudy(COLUMN) 8 p.m.(COLUMN)52 Lisbon(COLUMN) rain(COLUMN) noon(COLUMN)54 London cloudy(COLUMN) 1 p.m.(COLUMN)36 Madrid(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)45 Malta(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)57 Manila(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)77 Moscow(COLUMN)pt.cldy(COLUMN) 3 p.m.(COLUMN)16 New Delhi(COLUMN)pt.cldy(COLUMN) 5 p.m.(COLUMN)64 Nice(COLUMN) clear(COLUMN) 1 p.m.(COLUMN)48 Oslo(COLUMN) snow(COLUMN) 1 p.m.(COLUMN)28 Paris(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)36 Peking(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)21 Rome(COLUMN) rain(COLUMN) 1 p.m.(COLUMN)45 Saigon(COLUMN) clear(COLUMN) 8 p.m.(COLUMN)79 Sofia(COLUMN)pt.cldy(COLUMN) 2 p.m.(COLUMN)43 Stockholm(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)86 Sydney(COLUMN)pt.cldy(COLUMN)10 p.m.(COLUMN)73 Tel Aviv(COLUMN) clear(COLUMN) 2 p.m.(COLUMN)68 Tokyo(COLUMN) clear(COLUMN) 9 p.m.(COLUMN)36 Tunis(COLUMN)pt.cldy(COLUMN) 1 p.m.(COLUMN)36 Vienna(COLUMN) cloudy(COLUMN) 1 p.m.(COLUMN)36 Warsaw(COLUMN) snow(COLUMN) 1 p.m.(COLUMN)34(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)pt.Cldy(COLUMN)90 60 Barbados(COLUMN)pt.cldy(COLUMN)82(COLUMN)70 Bermuda(COLUMN) cloudy(COLUMN)65(COLUMN)56 Calgary(COLUMN)pt.cldy(COLUMN)23(COLUMN) 3 Edmonton(COLUMN) snow(COLUMN) 9(COLUMN)-8 Havana(COLUMN) cloudy(COLUMN)77(COLUMN)62 Kingston(COLUMN) clear(COLUMN)86(COLUMN)75 Montego Bay(COLUMN) clear(COLUMN)86(COLUMN)75 Mexico City(COLUMN)pt.cldy(COLUMN)72(COLUMN)42 Monterrey(COLUMN)pt.cldy(COLUMN)55(COLUMN)46 Montreal(COLUMN) clear(COLUMN) 3(COLUMN)-13 Nassau(COLUMN)pt.cldy(COLUMN)72(COLUMN)64 Ottawa(COLUMN) clear(COLUMN) 5(COLUMN)-13 Regina(COLUMN) snow(COLUMN) 5(COLUMN)-13 St. Kitts(COLUMN)pt.cldy(COLUMN)83(COLUMN)71 St. Thomas(COLUMN)pt.cldy(COLUMN)84(COLUMN)74 Toronto(COLUMN) clear(COLUMN)13(COLUMN)-2 Vancouver(COLUMN)drizzle(COLUMN)36(COLUMN)34 Verecruz(COLUMN) clear(COLUMN)72(COLUMN)62 Winnipeg(COLUMN) snow(COLUMN)-8(COLUMN)-18(END TABLE)