Washington: Today - Partly cloudy high in upper 30s, low in low 20s. The chance of precipitation is 40 per cent today and near zero tonight. Wind will be from the north at from 10 to 20 mph. Wednesday - Sunny, high in mid 30s.

Maryland and Virginia: Today - Partly cloudy, chance of snow fluries, highs from the 20s to the 30s, lows in the teens. Wednesday - Sunny, highs from the mid 20s to the 30s.

Cover Potomac and Chesapeake Bay: Today - Partly cloudy, with visibility of more than 5 miles. Wind will be from the north at from 15 to 25 knots. Waves in unprotected waters will be restricted by Ice.

Extended Area Forecast for Thursday through Saturday: Fair on Thursday and Saturday, chance of snow on Friday. Highs will be from the low 30s to near 40, lows in the teens. Normal Washington temperatures for the period are a high of 46 and a low of 29.

West Virginia: Today - Snow in the mountains, snow flurries elsewhere 20s to the mid 30s, low in the teens. Wednesday - Partly cloudy, highs in the 30s.

The National Weather Forecast for today - Snow will scatter from southern New England through the middle Atlantic Coast into the central Appalachians and western New York state. Sleet may mix with the snow along the middle Atlantic Coast. Rain is expected in North Carolina, while snow will scatter through the central Rocky Mountain region in southern Idaho, with rain and snow in the southern Rockies and southern Plateau. The remainder of the country will have partly cloudy to cloudy skies. Most of the nation will be cold, with much cooler temperatures from the central Gulf Coast into the southern Ohio Valley.

Almanac Data for today - Sun rises 7:01 a.m., sets 5:44 p.m.; moon rises 11:06 a.m., sets 12:21 a.m.

Tides: High 12:51 a.m. and 8:16 p.m., low 7:42 a.m. and 1:19 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the tides above: Annapolis (1 1/2), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (6), Norfolk (1 1/2), Virginia Beach (1). Solomons 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 2 p.m. to 3 p.m. period was 22 for the pollutant, photochemical oxidants. Index values between zero 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 be good.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 3.7 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)33(COLUMN)45 1 a.m.(COLUMN)30(COLUMN)58 2 a.m.(COLUMN)30(COLUMN)56 3 a.m.(COLUMN)28(COLUMN)63 4 a.m.(COLUMN)25(COLUMN)74 5 a.m.(COLUMN)26(COLUMN)68 6 a.m.(COLUMN)27(COLUMN)68 7 a.m.(COLUMN)27(COLUMN)71 8 a.m.(COLUMN)31(COLUMN)58 9 a.m.(COLUMN)34(COLUMN)52 10 a.m.(COLUMN)35(COLUMN)48 11 a.m.(COLUMN)35(COLUMN)48 12 noon(COLUMN)35(COLUMN)48 1 p.m.(COLUMN)36(COLUMN)46 2 p.m.(COLUMN)36(COLUMN)50 3 p.m.(COLUMN)36(COLUMN)48 5 p.m.(COLUMN)35(COLUMN)52 6 p.m.(COLUMN)31(COLUMN)78 7 p.m.(COLUMN)31(COLUMN)78 8 p.m.(COLUMN)31(COLUMN)85(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)31(COLUMN)24 Albuquerque(COLUMN)43(COLUMN)26 Amarillo(COLUMN)36(COLUMN)21 Anchorage(COLUMN)34(COLUMN)30 Asheville(COLUMN)58(COLUMN)29 Atlanta(COLUMN)64(COLUMN)45 Atlantic City(COLUMN)33(COLUMN)10 Austin(COLUMN)65(COLUMN)40 Baltimore(COLUMN)40(COLUMN)17 Billings(COLUMN)7(COLUMN)-8 Birmingham(COLUMN)63(COLUMN)48 Bismarck(COLUMN)14(COLUMN)9 Boise(COLUMN)35(COLUMN)28 Boston(COLUMN)33(COLUMN)22 Brownsville(COLUMN)89(COLUMN)43 Buffalo(COLUMN)23(COLUMN)22 Burlington, Vt.(COLUMN)25(COLUMN)6 Casper(COLUMN)15(COLUMN)-12 Charleston, S.C.(COLUMN)66(COLUMN)42 Ch'ston, W. Va.(COLUMN)37(COLUMN)22 Charlotte(COLUMN)57(COLUMN)33 Cheyenne(COLUMN)16(COLUMN)zero Chicago(COLUMN)35(COLUMN)18 Cincinnati(COLUMN)34(COLUMN)25 Cleveland(COLUMN)31(COLUMN)15 Columbia, S.C.(COLUMN)63(COLUMN)29 Columbus(COLUMN)30(COLUMN)11 Dal. -Ft. Worth(COLUMN)53(COLUMN)32 Dayton(COLUMN)32(COLUMN)17 Denyer(COLUMN)23(COLUMN)9 Des Moines(COLUMN)26(COLUMN)21 Detroit(COLUMN)31(COLUMN)10 Duluth(COLUMN)33(COLUMN)10 El Paso(COLUMN)51(COLUMN)42 Fairbanks(COLUMN)21(COLUMN)05 Fargo(COLUMN)14(COLUMN)02 Flagstaff(COLUMN)31(COLUMN)25 Great Falls(COLUMN)3(COLUMN)-17 Hartford(COLUMN)34(COLUMN)22 Helena(COLUMN)15(COLUMN)-9 Honolulu(COLUMN)84(COLUMN)70 Houston(COLUMN)63(COLUMN)48 Indianapolis(COLUMN)34(COLUMN)28 Jackson, Miss.(COLUMN)69(COLUMN)52 Jacksonville(COLUMN)69(COLUMN)41 Juneau(COLUMN)37(COLUMN)20 Kansas City(COLUMN)32(COLUMN)26 Las Vegas(COLUMN)55(COLUMN)40 Little Rock(COLUMN)48(COLUMN)40 Los Angeles(COLUMN)57(COLUMN)46 Louisville(COLUMN)36(COLUMN)31 Memphis(COLUMN)63(COLUMN)45 Miami Beach(COLUMN)69(COLUMN)65 Midland-Odessa(COLUMN)62(COLUMN)30 Milwaukee(COLUMN)29(COLUMN)14 Mpls.-St. Paul(COLUMN)27(COLUMN)17 Nashville(COLUMN)48(COLUMN)35 New Orleans(COLUMN)61(COLUMN)48 New York(COLUMN)33(COLUMN)30 Norfolk(COLUMN)46(COLUMN)23 North Platte(COLUMN)23$10 Oklahoma City(COLUMN)41(COLUMN)27 Omaha(COLUMN)27(COLUMN)17 Orlando(COLUMN)75(COLUMN)48 Philadelphia(COLUMN)34(COLUMN)14 Phoenix(COLUMN)60(COLUMN)47 Pittsburgh(COLUMN)34(COLUMN)14 Portland, Maine(COLUMN)34(COLUMN)4 Portland, Ore.(COLUMN)45(COLUMN)39 Providence(COLUMN)31(COLUMN)7 Raleigh(COLUMN)55(COLUMN)27 Rapid City(COLUMN)13(COLUMN)8 Reno(COLUMN)35(COLUMN)29 Richmond(COLUMN)50(COLUMN)19 St. Louis(COLUMN)32(COLUMN)29 St. Prbg.-Tampa(COLUMN)69(COLUMN)49 Salt Lake City(COLUMN)38(COLUMN)28 San Antonio(COLUMN)68(COLUMN)41 San Diego(COLUMN)61(COLUMN)51 San Francisco(COLUMN)56(COLUMN)49 San Juan(COLUMN)84(COLUMN)71 St. Cte. Marie(COLUMN)28(COLUMN)10 Seattle(COLUMN)52(COLUMN)41 Shreveport(COLUMN)59(COLUMN)38 Sioux Falls(COLUMN)23(COLUMN)14 Spokane(COLUMN)30(COLUMN)22 Syracuse(COLUMN)28(COLUMN)19 Topeka(COLUMN)35(COLUMN)29 Tucson(COLUMN)55(COLUMN)45 Tulsa(COLUMN)39(COLUMN)31 Washington(COLUMN)45(COLUMN)24 Wichita(COLUMN)36(COLUMN)26(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)T. Aberdeen(COLUMN)snow(COLUMN)1 p.m.(COLUMN)34 Amrsterdam(COLUMN)snow(COLUMN)1 p.m.(COLUMN)27 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)55 Athens(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)64 Auckland(COLUMN)cloudy(COLUMN)midnight(COLUMN)68 Berlin(COLUMN)haze(COLUMN)1 p.m.(COLUMN)28 Birmingham(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)32 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)30 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)55 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)32 Dublin(COLUMN)clear(COLUMN)1 p.m.(COLUMN)32 Geneva(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)32 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)59 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)59 London(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)34 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)43 Malta(COLUMN)rain(COLUMN)1 p.m.(COLUMN)61 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)32 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)70 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)21 Paris(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)32 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)19 Rome(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)32 Saigon(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)82 Sofia(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)55 Stockholm(COLUMN)snow(COLUMN)1 p.m.(COLUMN)25 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)73 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)77 Tokyo(COLUMN)pt. cldy(COLUMN)9 p.m.(COLUMN)45 Tunis(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)30 Warsaw(COLUMN)clear(COLUMN)1 p.m.(COLUMN)30(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapuico(COLUMN)clear(COLUMN)88(COLUMN)71 Barbedos(COLUMN)fair(COLUMN)81 71 Bermuda(COLUMN)cloudy(COLUMN)59(COLUMN)53 Bogota(COLUMN)fair(COLUMN)68(COLUMN)35 Culiacan(COLUMN)clear(COLUMN)73(COLUMN)43 Edmonton(COLUMN)clear(COLUMN)1(COLUMN)-6 Havana(COLUMN)pt. cldy(COLUMN)77(COLUMN)59 Kingston(COLUMN)fair(COLUMN)82(COLUMN)64 Montego Bay(COLUMN)fair(COLUMN)79(COLUMN)68 Mexico City(COLUMN)clear(COLUMN)68(COLUMN)43 Monterrey(COLUMN)clear(COLUMN)81(COLUMN)46 Montreal(COLUMN)clear(COLUMN)81(COLUMN)46 Nassau(COLUMN)fair(COLUMN)70(COLUMN)50 Ottawa(COLUMN)clear(COLUMN)23(COLUMN)9 Regina(COLUMN)cloudy(COLUMN)12(COLUMN)7 St. Kitts(COLUMN)fair(COLUMN)83(COLUMN)67 Toronto(COLUMN)cloudy(COLUMN)28(COLUMN)23 Vancouver(COLUMN)cloudy(COLUMN)45(COLUMN)34 Winnipeg(COLUMN)clear(COLUMN)12(COLUMN)-11(END TABLE)