Washington: Today - Variously cloudy, chance of morning rain, high in low 40s, low in the teens. The chance of precipitation is 40 per cent today and near zero tonight. Saturday - Partly cloudy, high on the mid 30s.

Maryland and Virginia: Today - Variably cloudy, chance of morning rains, highs from the 30s to the 50s, lows from the 20s to the mid 80s.Saturday - Partly cloudy, highs from the 20s to the 40s.

Lower Potomac and Chesapeake Bay: Today - Variably cloudy with visibility of more than 5 miles. Wind will be from south at from to 25 knots this morning, shifting to from the northwest by this afternoon. Waves in unprotected waters will be from 2 to 4 feet.

Extended Area Forecast for Sunday through Tuesday: Fair on Sunday, chance of snow on Monday or Tuesday. Highs will be from the 20s to the low 40s, low in the 20s. Temperatures will be 5 to 10 degrees colder in the mountains. Normal Washington temperatures for the period are a high of 45 and a low of 30.

West Virginia: Today - Snow, highs in the 30s, lows from the mid raise to the mid 20s. Saturday - Partly cloudy, highs from the teens to the mid 20s.

The National Weather Forecast for today - Showers will extend from northern California through western Washington, with snow from the northern Rockies into eastern portors of the northern intermountain region. Snow will extend from the Great Lakes and New England across the central Appalachians to New Jersey, then become rain over the lower Appalachians and North Carolina. Temperatures will be and from the northern half of the Pacific Coast and the rockies to the entire Atlantic Coast. It will be very cold from the northern Rockies through the northern and cetnral Plains, the upper three quarters of the Mississippi Valley and upper Great Lakes into western portions of the Ohio Valley. Temperatures will be mild and skies partly cloudy in the Southwest.

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 2 p.m. to 3 p.m. period was 10 for the pollutant photochemical oxidants. Index values between zero and 24 indicate good air quality.When the index exceeds 100 the air is 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 be good.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 4.6 feet today Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnite(COLUMN)24(COLUMN)52 1 a.m.(COLUMN)24.(COLUMN)52 2a.m.(COLUMN)24(COLUMN)52 3 a.m.(COLUMN)24(COLUMN)52 4 a.m.(COLUMN)23(COLUMN)57 5 a.m.(COLUMN)23(COLUMN)57 6 a.m.(COLUMN)23(COLUMN)57 7 a.m.(COLUMN)21(COLUMN)62 8 a.m.(COLUMN)24(COLUMN)57 9 a.m.(COLUMN)27(COLUMN)51 10 a.m.(COLUMN)31(COLUMN)43 11 a.m.(COLUMN)32(COLUMN)43 12 noon(COLUMN)32(COLUMN)43 1 p.m.(COLUMN)35(COLUMN)40 2 p.m.(COLUMN)36(COLUMN)43 3 p.m.(COLUMN)36(COLUMN)38 4 p.m.(COLUMN)35(COLUMN)42 5 P.m.(COLUMN)34(COLUMN)44 6 p.m.(COLUMN)34(COLUMN)44 7 p.m.(COLUMN)34(COLUMN)32(END TABLE) Temperatures ending 8 a.m. (EST) yesterday(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)25(COLUMN)8 Albuquerque(COLUMN)62(COLUMN)44 Amarllio(COLUMN)65(COLUMN)51 Anchorage(COLUMN)10(COLUMN)-10 Asheville(COLUMN)30(COLUMN)12 Atlanta(COLUMN)34(COLUMN)24 Atlantic City(COLUMN)31(COLUMN)22 Austin(COLUMN)66(COLUMN)58 Baltimore(COLUMN)33(COLUMN)17 Billings(COLUMN)16(COLUMN)-14 Birmingham(COLUMN)36(COLUMN)32 Bismarck(COLUMN)-3(COLUMN)-5 Boise(COLUMN)48(COLUMN)29 Boston(COLUMN)33(COLUMN)19 Brownsville(COLUMN)77(COLUMN)64 Buffalo(COLUMN)24(COLUMN)16 Burlington(COLUMN)22(COLUMN)10 Casper(COLUMN)48(COLUMN)-3 Charleston, S.C.(COLUMN)41(COLUMN)32 Ch'town, W Va(COLUMN)16(COLUMN)6 Charlotte(COLUMN)36(COLUMN)20 Cheyenne(COLUMN)48(COLUMN)13 Chicago(COLUMN)13(COLUMN)7 Cincinnati(COLUMN)11(COLUMN)4 Cleveland(COLUMN)17(COLUMN)3 Columbia, S.C.(COLUMN)40(COLUMN)18 Columbus(COLUMN)11(COLUMN)10 Dat. Ft. Worth(COLUMN)54(COLUMN)46 Dayton(COLUMN)15(COLUMN)10 Denver(COLUMN)64(COLUMN)26 Des Moines(COLUMN)16(COLUMN)14 Detroit(COLUMN)26(COLUMN) Duluth(COLUMN)12(COLUMN)10 EI Paso(COLUMN)75(COLUMN)51 Fairbanks(COLUMN)-29(COLUMN)-37 Frago(COLUMN)6(COLUMN)3 Flagstaff(COLUMN)58(COLUMN)26 Great Falls(COLUMN)-6(COLUMN)-27 Hartford(COLUMN)29(COLUMN)17 Helena(COLUMN)37(COLUMN)-14 Honolulu(COLUMN)81(COLUMN)69 Houston(COLUMN)66(COLUMN)64 Indianapolis(COLUMN)16(COLUMN)12 Jackson, Miss.(COLUMN)47(COLUMN)43 Jacksonville(COLUMN)50(COLUMN)31 Juncau(COLUMN)8(COLUMN)-3 Kansas City(COLUMN)30(COLUMN)26 Las Vegas(COLUMN)67(COLUMN)41 Little Rock(COLUMN)41(COLUMN)29 Los Angeles(COLUMN)62(COLUMN)53 Louisville(COLUMN)19(COLUMN)16 Memphis 33(COLUMN)36 Miami Beach(COLUMN)70(COLUMN)58 Midland-Odessa(COLUMN)72(COLUMN)42 Milwaukee(COLUMN)17(COLUMN)10 Mpls. St. Paul(COLUMN)10(COLUMN)5 Nashville(COLUMN)26(COLUMN)22 New Orleans(COLUMN)54(COLUMN)43 New York(COLUMN)28(COLUMN)25 Norfolk(COLUMN)36(COLUMN)28 North Platte(COLUMN)30(COLUMN)11 Oklahoma City(COLUMN)50(COLUMN)37 Omaha(COLUMN)22(COLUMN)18 Orlando(COLUMN)59(COLUMN)42 Philadelphia $29(COLUMN)17 Phoenix(COLUMN)76(COLUMN)49 Pittsburgh(COLUMN)17(COLUMN)10 Portland, Maine(COLUMN)30(COLUMN)8 Portland, Ore.(COLUMN)44(COLUMN)34 Providence(COLUMN)30(COLUMN)19 Raleigh(COLUMN)35(COLUMN)16 Rapid City(COLUMN)20(COLUMN)-3 Reno(COLUMN)62(COLUMN)17 Richmond(COLUMN)37(COLUMN)17 St. Louis(COLUMN)18(COLUMN)15 St. Pbg. Tampa(COLUMN)58(COLUMN)38 Salt Lake City(COLUMN)56(COLUMN)33 San Antonio(COLUMN)63(COLUMN)55 San Diego(COLUMN)61(COLUMN)59 San Francisco(COLUMN)61(COLUMN)52 San Juan(COLUMN)89(COLUMN)74 St. Ste. Marie(COLUMN)20(COLUMN)-6 Seattle(COLUMN)42(COLUMN)32 Shreveport(COLUMN)55(COLUMN)40 Sioux Falls(COLUMN)20(COLUMN)17 Spokane(COLUMN)35(COLUMN)5 Syracuse(COLUMN)24(COLUMN)15 Topeka(COLUMN)34(COLUMN)29 Tucson(COLUMN)78(COLUMN)48 Tulsa(COLUMN)46(COLUMN)35 Washington(COLUMN)34(COLUMN)21 Wichita(COLUMN)43(COLUMN)33(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)41 Amsterdam(COLUMN)Cloudy(COLUMN)1 p.m.(COLUMN)50 Ankara(COLUMN)snow(COLUMN)3 p.m.(COLUMN)2 Athens(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)63 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)63 Berlin(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)37 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)6 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)37 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Geneva(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)66 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)54 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Madrid(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)50 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)snow(COLUMN)3 p.m.(COLUMN)25 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)73 Nice(COLUMN)rain(COLUMN)1 p.m.(COLUMN)65 Oglo(COLUMN)snow(COLUMN)1 p.m.(COLUMN)34 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)34 Rome(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)63 S aigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)39 Stockholm(COLUMN)coudy(COLUMN)1 p.m.(COLUMN)37 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)70 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)64 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)62 Tunis pt. cldy.(COLUMN)1 p.m.(COLUMN)75 Vienna(COLUMN)snow(COLUMN)1 p.m.(COLUMN)21 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)34(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)Highs(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)90(COLUMN)75 Barbados(COLUMN)pt. clyd(COLUMN)86(COLUMN)78 Bermuda(COLUMN)pt. cldy.(COLUMN)72(COLUMN)63 Bogota(COLUMN)pt. cldy.(COLUMN)64(COLUMN)42 Calgary(COLUMN)snow(COLUMN)-18(COLUMN)-31 Edmonton(COLUMN)snow(COLUMN)-20(COLUMN)-20 Havana(COLUMN)cloudy(COLUMN)(COLUMN) Kingston(COLUMN)fair(COLUMN)90(COLUMN)72 Montego Bay(COLUMN)fair(COLUMN)88(COLUMN)72 Mexico City(COLUMN)haze(COLUMN)72(COLUMN)50 Monterrey(COLUMN)fair(COLUMN)70(COLUMN)50 Montreal(COLUMN)clear(COLUMN)23(COLUMN)7 Ottawa(COLUMN)clear(COLUMN)19(COLUMN)-2 St. Kitts(COLUMN)pt. cldy.(COLUMN)35(COLUMN)74 Toronto(COLUMN)clear(COLUMN)21(COLUMN)zero Vancouver(COLUMN)snow(COLUMN)-2(COLUMN)8 Veracruz(COLUMN)fair(COLUMN)73(COLUMN)62 Winnipeg(COLUMN)snow(COLUMN)-2(COLUMN)-8(END TABLE)