Washington: Today - Partly cloudy, high near 60, low in the low 40s. The chance of rain is 20 per cent today and 10 per cent tonight. Thursday - Partly Sunny, high near 60.

Maryland and Virginia: Today - Partly cloudy, highs from the upper 40s to the low 60s, lows from the mid 30s to the low 40s. There is a chance of snow flurries in the mountains, where it will also be colder. Thursday - Partly sunny, highs from the 50s to the mid 60s.

Lower Potomac and Chesapeake Bay: Today - Partly cloudy, visibility of more than 5 miles.Wind will be from the northwest at less than 12 knots. Waves in unprotected waters will be less than 2 feet.

Extended Area Forecast for Friday through Sunday: Fair and cool on Friday, chance of showers on Saturday and Sunday. Highs will be from the low 60s to near 70, lows from the 30s in the mountains to the mid 50s elsewhere. Normal Washington temperatures for the period are a high of 70 and a low of 50.

West Virginia: Today - Cloudy, chance of showers, highs from the mid 40s to the low 50s, lows in the 30s. Thursday - Partly cloudy, highs from the mid 40s to the low 50s.

The national Weather Forecast for today - Precipitation will be limited to the northeast quarter of the nation and mostly as rainfalls. Some snow will fall along the northern Great Lakes. Temperatures will be seasonably cold across the southern half of Texas. The remainder of the nation will have cool to mild readings. It will be cloudy in the northeast. The remainder of the nation will have sunny skies.

Almanac Data for Today - Sun rises 7:14 a.m., sets 6:35 p.m.; moon rises 6:53 a.m., sets 6:34 p.m. Tides: High 7:21 a.m. and 7:50 p.m.; low 1:54 a.m. and 2:13 p.m. High and low tides at the following locations can be obtained by substracting the hours indicated from the tides above. Annapolis (1 1/2); Bloody Point Lighthouse (7 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 40 for the pollutant, photochemical oxidants. Index values between zero and 49 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 good.

The National Weather Service forecasts the Potomac River stage at Little Falls should be near 3 feet today.

Local Temp. Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnt(COLUMN)55(COLUMN)69 1 a.m.(COLUMN)52(COLUMN)77 2 a.m.(COLUMN)51(COLUMN)77 3 a.m.(COLUMN)50(COLUMN)80 4 a.m.(COLUMN)50(COLUMN)77 5 a.m.(COLUMN)49(COLUMN)80 6 a.m.(COLUMN)48(COLUMN)80 7 a.m.(COLUMN)46(COLUMN)86 8 a.m.(COLUMN)47(COLUMN)86 9 a.m.(COLUMN)51(COLUMN)86 10 a.m.(COLUMN)54(COLUMN)72 11 a.m.(COLUMN)60(COLUMN)58 12 noon(COLUMN)63(COLUMN)58 1 p.m.(COLUMN)66(COLUMN)49 2 p.m.(COLUMN)66(COLUMN)47 3 p.m.(COLUMN)67(COLUMN)47 4 p.m.(COLUMN)67(COLUMN)47 5 p.m.(COLUMN)68(COLUMN)45 6 p.m.(COLUMN)67(COLUMN)49 7 p.m.(COLUMN)65(COLUMN)54(END TABLE) Temperatures ending 8 a.m. (EDT) Yesterday(TABLE) City (COLUMN)H.(COLUMN)L. Albany(COLUMN)53(COLUMN)35 Albuquerque(COLUMN)77(COLUMN)40 Amarillo(COLUMN)75(COLUMN)38 Anchorage(COLUMN)50(COLUMN)41 Asheville(COLUMN)61(COLUMN)39 Atlanta(COLUMN)69(COLUMN)51 Atlantic City(COLUMN)62(COLUMN)50 Austin(COLUMN)80(COLUMN)58 Baltimore(COLUMN)64(COLUMN)41 Billings(COLUMN)41(COLUMN)28 Birmingham(COLUMN)66(COLUMN)57 Bismarck(COLUMN)40(COLUMN)85 Boise(COLUMN)59(COLUMN)36 Boston(COLUMN)61(COLUMN)46 Brownsville(COLUMN)92(COLUMN)77 Buffalo(COLUMN)57(COLUMN)42 Burlington(COLUMN)56(COLUMN)37 Casper(COLUMN)41(COLUMN)23 Charleston, S.C.(COLUMN)72(COLUMN)58 Charleston, W. Va.(COLUMN)60(COLUMN)41 Charlotte(COLUMN)63(COLUMN)46 Chevenne(COLUMN)47(COLUMN)18 Cincinnati(COLUMN)60(COLUMN)44 Chicago(COLUMN)65(COLUMN)40 Cleveland(COLUMN)62(COLUMN)45 Columbia, S.C.(COLUMN)70(COLUMN)45 Columbus(COLUMN)59(COLUMN)40 Dal.-Ft. Worth(COLUMN)64(COLUMN)50 Dayton(COLUMN)61(COLUMN)44 Denver(COLUMN)60(COLUMN)25 Des Moines(COLUMN)63(COLUMN)38 Detroit(COLUMN)60(COLUMN)45 Duluth(COLUMN)45(COLUMN)34 El Paso(COLUMN)79(COLUMN)48 Fairbanks(COLUMN)53(COLUMN)42 Fargo(COLUMN)44(COLUMN)37 Flagstaff(COLUMN)71(COLUMN)32 Great Falls(COLUMN)45(COLUMN)29 Hartford(COLUMN)58(COLUMN)35 Helena(COLUMN)49(COLUMN)24 Honolulu(COLUMN)88(COLUMN)75 Houston(COLUMN)75(COLUMN)66 Indianapolis(COLUMN)65(COLUMN)46 Jackson, Miss.(COLUMN)66(COLUMN)60 Jacksonville(COLUMN)82(COLUMN)61 Juneau(COLUMN)47(COLUMN)43 Kansas City(COLUMN)56(COLUMN)38 Las Vegas(COLUMN)91(COLUMN)59 Little Rock(COLUMN)72(COLUMN)50 Los Angeles(COLUMN)78(COLUMN)63 Louisville(COLUMN)63(COLUMN)44 Memphis(COLUMN)73(COLUMN)53 Miami Beach(COLUMN)86(COLUMN)76 Midland-Odessa(COLUMN)87(COLUMN)45 Milwaukee(COLUMN)63(COLUMN)38 Mpls. St. Paul(COLUMN)49(COLUMN)33 Nashville(COLUMN)67(COLUMN)46 New Orleans(COLUMN)80(COLUMN)69 New York(COLUMN)58(COLUMN)48 Norfolk(COLUMN)64(COLUMN)50 North Platte(COLUMN)51(COLUMN)31 Oklahoma City(COLUMN)79(COLUMN)45 Orlando(COLUMN)55(COLUMN)36 Philadephia(COLUMN)60(COLUMN)42 Phoenix(COLUMN)93(COLUMN)70 Pittsburgh(COLUMN)58(COLUMN)38 Portland, Maine(COLUMN)62(COLUMN)41 Portland, Ore.(COLUMN)68(COLUMN)43 Providence(COLUMN)57(COLUMN)41 Raleigh(COLUMN)65(COLUMN)45 Rapid City(COLUMN)41(COLUMN)24 Reno(COLUMN)72(COLUMN)33 Richmond(COLUMN)65(COLUMN)40 St. Louis(COLUMN)63(COLUMN)41 St. Prbg. Tampa(COLUMN)89(COLUMN)71 Salt Lake City(COLUMN)59(COLUMN)34 San Antonio(COLUMN)87(COLUMN)62 San Diego(COLUMN)73(COLUMN)67 San Francisco(COLUMN)71(COLUMN)53 San Juan(COLUMN)88(COLUMN)77 St. Ste. Marie(COLUMN)58(COLUMN)47 Seattle(COLUMN)61(COLUMN)45 Shreveport(COLUMN)61(COLUMN)55 Sioux Falls(COLUMN)46(COLUMN)34 Spokane(COLUMN)53(COLUMN)32 Syracuse(COLUMN)60(COLUMN)37 Topeka(COLUMN)60(COLUMN)37 Tucson(COLUMN)83(COLUMN)64 Tulsa(COLUMN)73(COLUMN)43 Washington(COLUMN)64(COLUMN)45 Wichita(COLUMN)62(COLUMN)37(END TABLE) Temperatures Abroad Yesterday(TABLE) City (COLUMN)Weather(COLUMN)Time(COLUMN)T. Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Amsterdam(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)72 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)77 Auckland(COLUMN)cloudy(COLUMN)midn.(COLUMN)55 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Brussels(COLUMN)cloudy(COLUMN)1 P.m.(COLUMN)50 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)90 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)70 Copenhagen(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)55 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Geneva(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)77 Lisbon(COLUMN)pt. cldy.(COLUMN)noon(COLUMN)64 London(COLUMN)Cloudy(COLUMN)1 p.m.(COLUMN)59 Madrid(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Manila(COLUMN)clear(COLUMN)8 p.m.(COLUMN)84 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)54 New Delhi(COLUMN)clear(COLUMN)1 p.m.(COLUMN)90 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)55 Paris(COLUMN)pt. cldy.(COLUMN)1 p.m.(COLUMN)59 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)50 Rome(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)63 Saigon(COLUMN)rain(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)57 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)68 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)82 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)63 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)77 Vienna(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)T. Acapulco(COLUMN)pt. cldy(COLUMN)90(COLUMN)79 Barbados(COLUMN)clear(COLUMN)89 Bermuda(COLUMN)clear(COLUMN)80(COLUMN)78 Calgary(COLUMN)clear(COLUMN)43(COLUMN)23 Edmonton(COLUMN)clear(COLUMN)48(COLUMN)19 Havana(COLUMN)clear(COLUMN)88(COLUMN)76 Kingston(COLUMN)pt. cldy(COLUMN)90(COLUMN)79 Monica Bay(COLUMN)clear(COLUMN)88(COLUMN)77 Mexico City(COLUMN)haze(COLUMN)82(COLUMN)57 Monterrey(COLUMN)cloudy(COLUMN)86(COLUMN)70 Montreal(COLUMN)pt. cldy(COLUMN)54(COLUMN)36 Nassau(COLUMN)clear(COLUMN)86(COLUMN)66 Ottawa(COLUMN)pt. cldy(COLUMN)50(COLUMN)32 Regina(COLUMN)clear(COLUMN)37(COLUMN)16 St. Kitts(COLUMN)pt. cldy(COLUMN)88(COLUMN)76 St. Thomas(COLUMN)clear(COLUMN)87(COLUMN)78 Toronto(COLUMN)pt. cldy(COLUMN)57(COLUMN)41 Vancouver(COLUMN)cloudy(COLUMN)55(COLUMN)41 Veracruz(COLUMN)pt. cldy(COLUMN)94(COLUMN)77 Winnipeg(COLUMN)clear(COLUMN)43(COLUMN)32(END TABLE) Local Temp. Humidity(TABLE) City(COLUMN)Weather(COLUMN)(COLUMN). L. 12 midnt(COLUMN)55(COLUMN)69 1 a.m.(COLUMN)52(COLUMN)77 2 a.m.(COLUMN)51(COLUMN)77 3 a.m.(COLUMN)50(COLUMN)80 4 a.m.(COLUMN)50(COLUMN)77 5 a.m.(COLUMN)49(COLUMN)80 6 a.m.(COLUMN)48(COLUMN)80 7 a.m.(COLUMN)46(COLUMN)86 8 a.m.(COLUMN)47(COLUMN)86 9 a.m.(COLUMN)51(COLUMN)86 10 a.m.(COLUMN)54(COLUMN)72 11 a.m.(COLUMN)60(COLUMN)58 12 noon(COLUMN)63(COLUMN)58 1 p.m.(COLUMN)66(COLUMN)49 2 p.m.(COLUMN)66(COLUMN)47 3 p.m.(COLUMN)67(COLUMN)47 4 p.m.(COLUMN)67(COLUMN)47 5 p.m.(COLUMN)68(COLUMN)45 6 p.m.(COLUMN)67(COLUMN)49 7 p.m.(COLUMN)65(COLUMN)54(END TABLE)