Washington: Today - Sunny, high near 32, low near 20. The chance of participation is near zero through tonight. Thursday - Partly cloudy, Maryland and Virginia: Today - Fair, highs from the teens to the 30s, lows from near zero to the 20s. Thursday - Partly cloudy, chance of snow in the mountains, highs from the mid 20s to the 30s. Lower Potomac and Chesapeake Bay: Today - Fair with visibility of more than 5 miles. Wind will be from the northwest at up to 30 frosts. Waves in unprotected waters will be less than 3 feet.

Extended Area Forecast for Friday through Sunday: Snow on Friday, fair on Saturday and Sunday. Highs will be from the mid to upper 35s, lows from the teens to the mid 20s. Normal Washington temperatures for the period are a high of 26 and a low of 30.

West Virginia: Today - Partly cloudy highs from the teens to the mid 20s, lows from near zero to the mid teens. Thursay - Snow, highs from the 20s to the low 30s.

The National Weather Forecast for today - Rain will extend along the northern half of the Pacific Coast, turning to snow over the northern Rockies, with snow extending across the upper Missouri Valley and the northern Plains into Nebraska, Iowa and northern Missouri. Snow will also extend from northern New England through the lower Great Lakes, the upper Ohio Valley and the northern two-thirds of the Appalactians. Temperatures will be very cold over Montana, as well as from the upper half of the Mississippi Valley, across the Ohio Valley, into the central Appalactians. It will also be very cold over southern Georgia and norther Florida. Temperatures will be cold from the Atlantic Coast through the Plains and northern Rockies as well as the Pacific Coast from Washington through northern California. Elsewhere temperatures will be seasonably mild.

Almanac Data for today - Sun Rises 7:13 a.m., sets 4:46 p.m.; moon rises 3:23 a.m.; sets 2:37 p.m. Tides: high 4:18 a.m. and 4:54 p.m., low 11:11 a.m. and 11:56 p.m. High and low tides at the following locations may be 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 Lockout (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 13 for the pollutant, photo chemical oxidents. 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 5.1 feet today. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)41(COLUMN)86 1 a.m.(COLUMN)42(COLUMN)86 2 a.m.(COLUMN)40(COLUMN)86 3 a.m.(COLUMN)39(COLUMN)82 4 a.m.(COLUMN)38(COLUMN)82 5 a.m.(COLUMN)37(COLUMN)82 6 a.m.(COLUMN)39(COLUMN)76 7 a.m.(COLUMN)40(COLUMN)76 8 a.m.(COLUMN)38(COLUMN)82 9 a.m.(COLUMN)42(COLUMN)60 10 a.m.(COLUMN)42(COLUMN)55 11 a.m.(COLUMN)43(COLUMN)53 12 noon(COLUMN)43(COLUMN)53 1 p.m.(COLUMN)43(COLUMN)53 1 p.m.(COLUMN)43(COLUMN)59 2 p.m.(COLUMN)43(COLUMN)41 3 p.m.(COLUMN)42(COLUMN)39 4 p.m.(COLUMN)40(COLUMN)43 5 p.m.(COLUMN)40(COLUMN)41 6 p.m.(COLUMN)40(COLUMN)41 7 p.m.(COLUMN)38(COLUMN)41(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)29(COLUMN)25 Albuquerque(COLUMN)62(COLUMN)29 Amarillo(COLUMN)42(COLUMN)14 Anchorage(COLUMN)-7(COLUMN)-8 Asheville(COLUMN)66(COLUMN)38 Atlantic(COLUMN)75(COLUMN)37 Atlantic City(COLUMN)59(COLUMN)34 Austin(COLUMN)81(COLUMN)34 Baltimore(COLUMN)48(COLUMN)35 Billings(COLUMN)1(COLUMN)-4 Birmingham(COLUMN)72(COLUMN)37 Bismarck(COLUMN)0(COLUMN)-12 Boise(COLUMN)45(COLUMN)35 Boston(COLUMN)40(COLUMN)35 Brownsville(COLUMN)94(COLUMN)58 Buffalo(COLUMN)27(COLUMN)23 Burlington(COLUMN)24(COLUMN)22 Casper(COLUMN)17(COLUMN)-8 Charleston, S.C.(COLUMN)69(COLUMN)58 Charlstn, W.Va.(COLUMN)61(COLUMN)37 Charlotte(COLUMN)66(COLUMN)43 Cheyenne(COLUMN)23(COLUMN)-5 Chicago(COLUMN)36(COLUMN)18 Cincinnati(COLUMN)43(COLUMN)25 Cleveland(COLUMN)42(COLUMN)27 Columbia, S.C.(COLUMN)70(COLUMN)49 Columbus(COLUMN)43(COLUMN)27 Dat.-Ft. Worth(COLUMN)62(COLUMN)24 Dayton(COLUMN)35(COLUMN)25 Denver(COLUMN)41(COLUMN)18 Des Moines(COLUMN)26(COLUMN)zero Detroit(COLUMN)30(COLUMN)23 Duluth(COLUMN)19(COLUMN)-5 El Paso(COLUMN)72(COLUMN)41 Fairbanks(COLUMN)-16(COLUMN)-25 Fargo(COLUMN)10(COLUMN)-13 Flagstaff(COLUMN)60(COLUMN)16 Great Falls(COLUMN)-4(COLUMN)-10 Hartford(COLUMN)33(COLUMN)28 Helena(COLUMN)8(COLUMN)4 Honolulu(COLUMN)82(COLUMN)71 Houston(COLUMN)76(COLUMN)41 Indianapolis(COLUMN)37(COLUMN)25 Jackson, Miss.(COLUMN)74(COLUMN)33 Jacksonville(COLUMN)73(COLUMN)62 Bureau(COLUMN)10(COLUMN)6 Kansas City(COLUMN)32(COLUMN)5 Las Vegas(COLUMN)75(COLUMN)43 Little Rock(COLUMN)52(COLUMN)23 Los Angeles(COLUMN)76(COLUMN)54 Louisville(COLUMN)51(COLUMN)30 Memphis(COLUMN)72(COLUMN)30 Miami Beach(COLUMN)83(COLUMN)76 Midland-Odessa(COLUMN)71(COLUMN)21 Milwaukee(COLUMN)33(COLUMN)16 Mpls-St. Paul(COLUMN)19(COLUMN)-11 Nashville(COLUMN)68(COLUMN)30 New Orleans(COLUMN)82(COLUMN)47 New York(COLUMN)40(COLUMN)37 Norfolk(COLUMN)67(COLUMN)52 North Platte(COLUMN)24(COLUMN)-8 Oklahoma City(COLUMN)43(COLUMN)17 Omaha(COLUMN)29(COLUMN)-1 Orlando(COLUMN)84(COLUMN)73 Philadelphia(COLUMN)45(COLUMN)32 Phoenix(COLUMN)77(COLUMN)48 Pittsburgh(COLUMN)46(COLUMN)28 Portland, Maine(COLUMN)28(COLUMN)21 Portland, Ore.(COLUMN)46(COLUMN)39 Providence(COLUMN)39(COLUMN)35 Raleigh(COLUMN)66(COLUMN)49 Rapid City(COLUMN)10(COLUMN)-6 Reno(COLUMN)60(COLUMN)22 Richmond(COLUMN)63(COLUMN)45 St. Louis(COLUMN)35(COLUMN)5 St. Ptbg. Tmpa(COLUMN)78(COLUMN)73 Salt Lake City(COLUMN)49(COLUMN)33 San Antonio(COLUMN)95(COLUMN)37 San Diego(COLUMN)66(COLUMN)53 San Francisco(COLUMN)64(COLUMN)52 San Juan(COLUMN)85(COLUMN)76 St. Ste. Marie(COLUMN)19(COLUMN)11 Seattle(COLUMN)45(COLUMN)38 Shreveport(COLUMN)69(COLUMN)30 Sioux Falls(COLUMN)17(COLUMN)-6 Spokane(COLUMN)30(COLUMN)28 Syracuse(COLUMN)28(COLUMN)26 Tapeka(COLUMN)33(COLUMN)5 Tucson(COLUMN)75(COLUMN)44 Tulsa(COLUMN)43(COLUMN)15 Washington(COLUMN)49(COLUMN)36 Wichita(COLUMN)42(COLUMN)12(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Amsterdam(COLUMN)haze(COLUMN)1 p.m.(COLUMN)28 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)30 Athens(COLUMN)rain(COLUMN)2 p.m.(COLUMN)50 Auckland(COLUMN)pt. cldy.(COLUMN)midnt.(COLUMN)63 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)30 Birmingham(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Brussels(COLUMN)rain(COLUMN)1 p.m.(COLUMN)37 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)66 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)34 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)43 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)30 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)66 Lisbon(COLUMN)rain(COLUMN)noon(COLUMN)61 London(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)46 Malta(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)79 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)12 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)70 Nice(COLUMN)rain(COLUMN)1 p.m.(COLUMN)43 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)36 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)34 Rome(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52 Saigon(COLUMN)clear(COLUMN)2 p.m.(COLUMN)30 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)27 Sydney(COLUMN)clear(COLUMN)10 P.m.(COLUMN)54 Tel Aviv(COLUMN)pt. cloudy(COLUMN)2 p.m.(COLUMN)66 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)50 Tunis(COLUMN)pt. cloudy(COLUMN)1 p.m.(COLUMN)64 Vienna(COLUMN)snow(COLUMN)1 p.m.(COLUMN)21 Warsaw(COLUMN)snow(COLUMN)1 p.m.(COLUMN)28(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)90(COLUMN)76 Barbados(COLUMN)clear(COLUMN)86(COLUMN)77 Bermuda(COLUMN)pt. cldy.(COLUMN)72(COLUMN)71 Bogota(COLUMN)pt. cldy.(COLUMN)68(COLUMN)41 Catgary(COLUMN)snow(COLUMN)-8(COLUMN)-20 Edmonton(COLUMN)snow(COLUMN)-17(COLUMN)-33 Havana(COLUMN)pt. cldy.(COLUMN)88(COLUMN)76 Kingston(COLUMN)clear(COLUMN)88(COLUMN)78 Montego Bay(COLUMN)cloudy(COLUMN)86(COLUMN)72 Mexico City(COLUMN)haze(COLUMN)73(COLUMN)53 Monterrey(COLUMN)cloudy(COLUMN)95(COLUMN)53 Monterrey(COLUMN)cloudy(COLUMN)95(COLUMN)53 Montreal(COLUMN)snow(COLUMN)21(COLUMN)19 Nassau(COLUMN)pt. cldy.(COLUMN)85(COLUMN)73 Ottawa(COLUMN)snow(COLUMN)19(COLUMN)18 Toronto(COLUMN)snow(COLUMN)25(COLUMN)18 Vancouver(COLUMN)rain(COLUMN)39(COLUMN)32 Veracruz(COLUMN)haze(COLUMN)90(COLUMN)70 Winnipeg(COLUMN)clear(COLUMN)7(COLUMN)-8(END TABLE)