Washington: Today and Thursday-Clear and cold, high 40 to 45, low in the mid 20s. The chance of rain is near zero through tonight. Winds will be out of the northwest at 10 to 15 mph.

Maryland and Virginia: Today and Thursday - Clear and cold, highs from near 30 to the mid 40s, lows in the teens and 20s.

West Virginia: Today - Partly cloudy, highs from the upper 20s to the upper 30s, lows from 5 above to near 20. Thursday-increasing cloudiness, highs from the 30s to the low 40s.

Extended Area Forecast for Friday through Sunday - Chance of precipitation late Friday and early Saturday. Fair Sunday. Highs will be in the 30s and 40s, low in the 20s, in the teens in the mountains. Normal Washington temperatures are a high of 43 and a low of 28.

Lower Potomac and Chesapeake Bay-Fair with visibility of 5 miles or more. Winds will be from the northwest at 10 to 20 knots diminishing by evening. Waves will average near 2 feet.

The Nation Yesterday: Cold fronts set off snowshowers throughout the eastern half of the Great Lakes region, western Pennsylvania, western New York and over the interior sections of New England. Snowfall was heaviest in the hills and mountains of the northern Appalachians, the Catskills and the Adirondakcs. Light snowshowers also dipped into the western Ohio Valley. Thunder-showers were scattered from Texas into Louisiana while rainshowers continued over southern Florida. Cloudy skies returned to the eastern half of the nation but west of the Mississippi River conditions were dry with mostly fair skies. Heavy fog along the coast of southern California disrupted air traffic. Temperatures were freezing over the northern third of the country with northern Minnesota below zero. The Gulf Coast remained mild. Temperature readings in the 5/s blanketed the Southwest.

The National Weather Forecast for today-Snowshowers will be scattered throughout the Great Lakes region, western New York, western Pennsylvania and interior sections of New england. Heavy snow will begin spreading from the Pacific Northwest into the northern Rockies. Temperatures will remain below freezing across the northern third of the nation with the north-central sections near zero.Mild and sunny weather will continue throughout the southern half ot the country.

Almanac Data for today: The sun rises 7:26 a.m., sets 4:53 p.m.; moon rises 4:44 a.m., sets 3:18 p.m. Tides: high 5:23 a.m. and 5:55 p.m. low 12:05 a.m. and 12:13 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolis (3 1/4), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/4), Point Lookout (7).

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 3 p.m. period was 8 for the pollutant, suffur dioxide.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 to near 5.2 feet today.

Washington data for yesterday: Highest temperature since midnight yesterday, 48 degrees at 4:50 p.m. Lowest temperature since midnight, 31 degrees at 6:20 a.m. Excess of temperature since Dec. 1, 187 degrees. Excess of temperature since Jan. 1, 403 degrees.Record high temperature for today, 42 degrees in 1971. Record low temperature for today, 2 degrees in 1914. Relative humidity: maximum, 72 percent at 7 a.m.; minimum, 41 percent at 5 p.m. 24 hour precipitation, none. Excess of precipitation since Dec. 1, 93 inches. Excess of precipitation since Jan. 1, 76 inches. Highest observed wind since 7 a.m., 12 miles per hour from the South at 11:53 a.m. Peak gust since 7 a.m., 17 miles per hour from the South at 11:58 a.m.

Local Temp., Humidity(TABLE) Tome(COLUMN)T.(COLUMN)h. 12 mid.(COLUMN)37(COLUMN)54 1 a.m.(COLUMN)36(COLUMN)48 2 a.m.(COLUMN)36(COLUMN)46 3 a.m.(COLUMN)34(COLUMN)67 4 a.m.(COLUMN)33(COLUMN)66 5 a.m.(COLUMN)34(COLUMN)59 6 a.m.(COLUMN)33(COLUMN)64 7 a.m.(COLUMN)31(COLUMN)72 8 a.m.(COLUMN)33(COLUMN)66 9 a.m.(COLUMN)35(COLUMN)72 10 a.m.(COLUMN)38(COLUMN)62 11 a.m.(COLUMN)41(COLUMN)57 12 noon(COLUMN)45(COLUMN)49 1 p.m.(COLUMN)46(COLUMN)49 2 p.m.(COLUMN)47(COLUMN)54 3 p.m.(COLUMN)46(COLUMN)58 4 p.m.(COLUMN)45(COLUMN)60 5 p.m.(COLUMN)48(COLUMN)41 6 p.m.(COLUMN)46(COLUMN)45 7 p.m.(COLUMN)45(COLUMN)49 8 p.m.(COLUMN)46(COLUMN)47 9 p.m.(COLUMN)47(COLUMN)39 10 p.m.(COLUMN)45(COLUMN)45 11 p.m.(COLUMN)43(COLUMN)47(END TABLE)

Temperatures ending 7 p.m. (EST) yesterday(TABLE) City(COLUMN)L.(COLUMN)H. Albany(COLUMN)19(COLUMN)34 Albuquerque(COLUMN)25(COLUMN)50 Amarillo(COLUMN)14(COLUMN)40 Anchorage(COLUMN)16(COLUMN)20 Asheville(COLUMN)23(COLUMN)57 Atlanta(COLUMN)29(COLUMN)59 Atlatnic City(COLUMN)30(COLUMN)42 Austin(COLUMN)43(COLUMN)59 Billings(COLUMN)11(COLUMN)22 Birmingham(COLUMN)28(COLUMN)57 Bismarck(COLUMN)6(COLUMN)20 Boise(COLUMN)19(COLUMN)37 Boston(COLUMN)33(COLUMN)39 Brownsville(COLUMN)58(COLUMN)71 Buffalo(COLUMN)18(COLUMN)25 Burlington, Vt.(COLUMN)22(COLUMN)30 Casper(COLUMN)1(COLUMN)22 Charleston, S.C.(COLUMN)41(COLUMN)65 Charleston, W. Va.(COLUMN)23(COLUMN)42 Charlotte(COLUMN)29(COLUMN)62 Cheyenne(COLUMN)-1(COLUMN)22 Chicago(COLUMN)14(COLUMN)19 Cincinnati(COLUMN)25(COLUMN)33 Cleveland(COLUMN)17(COLUMN)29 Columbia, S. C.(COLUMN)28(COLUMN)66 Columbus(COLUMN)25(COLUMN)32 Dal. -Ft. Worth(COLUMN)41(COLUMN)50 Dayton(COLUMN)24(COLUMN)31 Denver(COLUMN)13(COLUMN)30 Des Moines(COLUMN)11(COLUMN)31 Detroit(COLUMN)15(COLUMN)27 Duluth(COLUMN)-7(COLUMN)12 El Paso(COLUMN)29(COLUMN)57 Fairbanks(COLUMN)-23(COLUMN)1 Fargo(COLUMN)-1(COLUMN)9 Flagstaff(COLUMN)14(COLUMN)45 Great Falls(COLUMN)8(COLUMN)24 Hartford(COLUMN)27(COLUMN)35 Helena(COLUMN)7(COLUMN)20 Houston(COLUMN)52(COLUMN)66 Indianapolis(COLUMN)25(COLUMN)31 Jackson(COLUMN)26(COLUMN)61 Jacksonville(COLUMN)33(COLUMN)65 Juneau(COLUMN)3(COLUMN)15 Kansas City(COLUMN)20(COLUMN)38 Las Vegas(COLUMN)33(COLUMN)61 Little Rock(COLUMN)34(COLUMN)45 Los Angeles(COLUMN)39(COLUMN)63 Louisville(COLUMN)28(COLUMN)36 Memphis(COLUMN)35(COLUMN)49 Miami Beach(COLUMN)70(COLUMN)80 Midland(COLUMN)31(COLUMN)50 Milwaukee(COLUMN)10(COLUMN)18 Mpls-St. Paul(COLUMN)5(COLUMN)19 Nashville(COLUMN)32(COLUMN)48 New Orleans(COLUMN)32(COLUMN)61 New York(COLUMN)31(COLUMN)42 Norfolk(COLUMN)28(COLUMN)58 North Platte(COLUMN)8(COLUMN)24 Oklahoma City(COLUMN)26(COLUMN)47 Omaha(COLUMN)14(COLUMN)26 Orlando(COLUMN)51(COLUMN)75 Philadelphis(COLUMN)25(COLUMN)42 Phoenix(COLUMN)40(COLUMN)68 Pittsburgh(COLUMN)19(COLUMN)32 Portland, Me.(COLUMN)25(COLUMN)35 Portland, Ore(COLUMN)26(COLUMN)39 Providence(COLUMN)29(COLUMN)37 Raleigh(COLUMN)25(COLUMN)66 Rapid City(COLUMN)10(COLUMN)19 Reno(COLUMN)10(COLUMN)26 Richmond(COLUMN)25(COLUMN)58 St. Louis(COLUMN)20(COLUMN)32 St. Prbg-Tampa(COLUMN)55(COLUMN)71 Salt Lake City(COLUMN)20(COLUMN)37 San Antonio(COLUMN)45(COLUMN)64 San Diego(COLUMN)45(COLUMN)61 San Francisco(COLUMN)40(COLUMN)46 San Juan(COLUMN)75(COLUMN)87 St. Ste. Marie(COLUMN)17(COLUMN)22 Seattle(COLUMN)32(COLUMN)42 Shreveport(COLUMN)36(COLUMN)49 Sioux Falls(COLUMN)14(COLUMN)22 Spokane(COLUMN)5(COLUMN)20 Syracuse(COLUMN)23(COLUMN)28 Topeka(COLUMN)19(COLUMN)42 Tucson(COLUMN)37(COLUMN)69 Tulsa(COLUMN)24(COLUMN)48 Washington(COLUMN)31(COLUMN)48 Wichita(COLUMN)23(COLUMN)44 Evansville(COLUMN)29(COLUMN)32(END TABLE)

Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)drizzle(COLUMN)1 p.m.(COLUMN)39 Amsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)45 Ankara(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)39 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)59 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)63 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Birmingh'm Pt.(COLUMN)cldy.(COLUMN)1 p.m.(COLUMN)50 Bonn(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Casablance(COLUMN)cloudy(COLUMN)noon(COLUMN)68 Copenhagen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Hong Kong(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)66 Jerusalem(COLUMN)rain(COLUMN)2 p.m.(COLUMN)50 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)61 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Malta(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)63 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)81 $.Moscow snow(COLUMN)3 p.m.(COLUMN)14 New Delhl(COLUMN)clear(COLUMN)5 p.m.(COLUMN)66 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Oslo(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)19 Pakis(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Peking(COLUMN)fog(COLUMN)8 p.m.(COLUMN)21 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61 Saigon(COLUMN)pt. cldy.(COLUMN)8 p.m.(COLUMN)84 Sofia(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)45 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)21 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN)73 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)46 Tunis(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)64 Vienna(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)39(END TABLE)

Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)88(COLUMN)73 Barbados(COLUMN)pt. cldy.(COLUMN)86(COLUMN)79 Bermuda(COLUMN)cloudy(COLUMN)77(COLUMN)69 Calgary(COLUMN)cloudy(COLUMN)25(COLUMN)03 Edmonton(COLUMN)clear(COLUMN)25(COLUMN)01 Havana(COLUMN)pt. cldy.(COLUMN)84(COLUMN)72 Kingston(COLUMN)fair(COLUMN)86(COLUMN)79 Montego Bay(COLUMN)pt. cldy.(COLUMN)84(COLUMN)70 Mexico City(COLUMN)clear(COLUMN)70(COLUMN)48 Monterray(COLUMN)cloudy(COLUMN)76(COLUMN)48 Montreal(COLUMN)snow(COLUMN)25(COLUMN)21 Nassau(COLUMN)pt. cldy.(COLUMN)82(COLUMN)70 Ottawa(COLUMN)snow(COLUMN)25(COLUMN)24 Regina(COLUMN)snow(COLUMN)19(COLUMN)-02 St. Kitta(COLUMN)pt. cldy.(COLUMN)84(COLUMN)74 Toronto(COLUMN)cloudy(COLUMN)34(COLUMN)18 Vancouver(COLUMN)cloudy(COLUMN)43(COLUMN)30 Vera Cruz(COLUMN)fair(COLUMN)31(COLUMN)64 Winnipes(COLUMN)snow(COLUMN)03(COLUMN)02(END TABLE)