Washington: Today - Cloudy, rain likely, high near 40, low in the low 30s. The chance of precipitation is 10 per cent today, 60 per cent tonight. Thursday - Rain, high near 40.

Maryland and virginia: Today - Cloudy, chance of rain or snow, highs from the 30s to the 40s, lows from the mid 20s to near 30. Thursday - Rain or snow, highs from the 30s to the 40s.

Lower Potomac and Chesapeake Bay: Today - Cloudy, rain or sleet likely tonight. Winds will be variable today at from 5 to 12 knots, but from the southeast to night at from 8 to 15 knots. Visibility will be more than 5 miles, but periodically less than 3 miles. Waves in unprotected waters will average less than 2 feet.

West Virginia: Today - Cloudy, rain or snow likely, highs from the low 30s to the mid 40s, lows from the mid 20s to the mid 30s. Thursday - Cloudy, chance of rain or snow, highs from the low 30s to the mid 40s.

Extended Area Forecast for Friday through Sunday - Partly cloudy on Friday and Saturday, chance of precipitation on Sunday. Highs will be in the 30s to near 40, lows in the 20s. Normal Washington temperatures for the period are a high of 43 and a low of 28.

The National Weather Forecast for today Snow will fall from the central plains across the middle Mississippi Valley, the northern half of the Ohio Valley and the lower Great Lakes. Rain is expected from Arkansas across the southern half of the Ohio Valley, the middle Atlantic coast, northern Alabama, Mississippi Valley across the southeastern states and the southern Atantic coast. Little temperature change is expected elsewhere.

ALMANAC DATA for today - Sun rises 7:27 a.m., sets 5 p.m.; moon rises 5:36 p.m., sets 7:11 a.m. Tides: High 7:51 a.m. and 8:08 p.m., low 2:28 a.m. and 2:34 p.m. High and low tides at the following points can be obtained by subtracting the hours indicated from the tides above. Annapools (3 1/4); Bloody Point Lighthouse (4 1/2); Deale, Md. (4 1/2); Colonial Beach (6); Norfolk, (1 1/2); Virginia Beach (1); Solomon's 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 14 for the pollutant, sulfur dioxide. Index values between zero and 24 indicated good air quality. When the index exceeds 100 the air becomes haardous and persons with lung, heart and eye problems should restrict their activity. The forecast for today indicates the air quality will be good.

The National Weather Service forecasts that the Potomac River stage at Little Falls will be near 3.3 feet. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)32(COLUMN)66 1 a.m.(COLUMN)31(COLUMN)69 2 a.m.(COLUMN)32(COLUMN)69 3 a.m.(COLUMN)32(COLUMN)69 4 a.m.(COLUMN)32(COLUMN)69 5 a.m.(COLUMN)32(COLUMN)69 6 a.m.(COLUMN)32(COLUMN)69 7 a.m.(COLUMN)32(COLUMN)66 8 a.m.(COLUMN)33(COLUMN)56 9 a.m.(COLUMN)35(COLUMN)56 10 a.m.(COLUMN)36(COLUMN)54 11 a.m.(COLUMN)38(COLUMN)50 12 noon(COLUMN)43(COLUMN)47 2 p.m.(COLUMN)42(COLUMN)49 3 p.m.(COLUMN)42(COLUMN)49 4 p.m.(COLUMN)46(COLUMN)51 5 p.m.(COLUMN)40(COLUMN)55 6 p.m.(COLUMN)41(COLUMN)53 7 p.m.(COLUMN)40(COLUMN)55(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)30(COLUMN)23 Albuquerque(COLUMN)44(COLUMN)26 Amarillo(COLUMN)58(COLUMN)39 Anchorage(COLUMN)32(COLUMN)30 Asheville(COLUMN)38(COLUMN)32 Atlanta(COLUMN)35(COLUMN)32 Atlantic City(COLUMN)28(COLUMN)27 Austin(COLUMN)41(COLUMN)37 Baltimore(COLUMN)32(COLUMN)29 Billings(COLUMN)13(COLUMN) 8 Birmingham(COLUMN)38(COLUMN)36 Bismarch(COLUMN) 4(COLUMN)22 Boise(COLUMN)33(COLUMN) 8 Boston(COLUMN)32(COLUMN)30 Brownsville(COLUMN)58(COLUMN)48 Buffalo(COLUMN)24(COLUMN)22 Burlington(COLUMN)22(COLUMN)21 Casper(COLUMN)38(COLUMN) 7 Charleston, SC(COLUMN)42(COLUMN)32 Charleston, WV(COLUMN)28(COLUMN)25 Charlotte(COLUMN)32(COLUMN)28 Cheyenne(COLUMN)39(COLUMN)22 Chicago(COLUMN)25(COLUMN)15 Cincinnati(COLUMN)27(COLUMN)26 Cleveland(COLUMN)27(COLUMN)25 Columbia, SC(COLUMN)37(COLUMN)32 Columbus(COLUMN)25(COLUMN)25 Dal.-Ft. Worth(COLUMN)36(COLUMN)34 Dayton(COLUMN)28(COLUMN)26 Denver(COLUMN)43(COLUMN)22 Des Moines(COLUMN)27(COLUMN)13 Detrolt(COLUMN)25(COLUMN)17 Duluth(COLUMN)15(COLUMN) 2 El Paso(COLUMN)62(COLUMN)48 Fairbanks(COLUMN)24(COLUMN) 5 Fargo(COLUMN)11(COLUMN) 8 Flagstaff(COLUMN)34(COLUMN)20 Great Falls(COLUMN)18(COLUMN) 5 Hartford(COLUMN)30(COLUMN)25 Helena(COLUMN)20(COLUMN) 6 Honolulu(COLUMN)79(COLUMN)62 Houston(COLUMN)47(COLUMN)42 Indianapolis(COLUMN)28(COLUMN)25 Jackson. Miss.(COLUMN)36(COLUMN)34 Jacksonville(COLUMN)62(COLUMN)41 Juneau(COLUMN)31(COLUMN)31 Kansas City(COLUMN)28(COLUMN)26 Las Vegas(COLUMN)55(COLUMN)33 Little Rock(COLUMN)38(COLUMN)29 Los Angeles(COLUMN)64(COLUMN)44 Louisville(COLUMN)31(COLUMN)30 Memphis(COLUMN)36(COLUMN)33 Miami Beach(COLUMN)79(COLUMN)55 Midland Odessa(COLUMN)70(COLUMN)35 Milwaukee(COLUMN)22(COLUMN) 3 Mpls.-St. Paul(COLUMN)21(COLUMN)13 Nashville(COLUMN)34(COLUMN)25 New Orleans(COLUMN)43(COLUMN)42 New York(COLUMN)30(COLUMN)29 Norfolk(COLUMN)38(COLUMN)32 North Platte(COLUMN)26(COLUMN)17 Oklahoma City(COLUMN)33(COLUMN)32 Omaha(COLUMN)28(COLUMN)23 Orlando(COLUMN)76(COLUMN)48 Philadelphia(COLUMN)30(COLUMN)27 Phoenix(COLUMN)65(COLUMN)43 Pittsburgh(COLUMN)23(COLUMN)22 Portland(COLUMN)28(COLUMN)21 Portland, Ore.(COLUMN)36(COLUMN)32 Providence(COLUMN)36(COLUMN)28 Raleigh(COLUMN)34(COLUMN)27 Rapid City(COLUMN)16(COLUMN)10 Reno(COLUMN)44(COLUMN)22 Richmond(COLUMN)33(COLUMN)28 St. Louis(COLUMN)29(COLUMN)27 St. Prbg. T'mpa(COLUMN)71(COLUMN)51 Salt Lake City(COLUMN)44(COLUMN)13 San Antonio(COLUMN)49(COLUMN)38 San Diego(COLUMN)64(COLUMN)54 San Francisco(COLUMN)56(COLUMN)47 San Juan(COLUMN)83(COLUMN)71 St. Ste. Marie(COLUMN)23(COLUMN) 9 Seattle(COLUMN)38(COLUMN)32 Shreveport(COLUMN)36(COLUMN)33 Sioux Falls(COLUMN)78(COLUMN) 7 Spokane(COLUMN)26(COLUMN)16 Syracuse(COLUMN)29(COLUMN)16 Tucson(COLUMN)62(COLUMN)43 Tulsa(COLUMN)31(COLUMN)29 Washington(COLUMN)33(COLUMN)30 Wichita(COLUMN)27(COLUMN)26(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)41 Amsterdam(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)43 Ankara(COLUMN)clear(COLUMN) 3 p.m.(COLUMN)28 Athens(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)46 Auckland(COLUMN)pt. cldy(COLUMN)midnight(COLUMN)64 Berlin(COLUMN)fog(COLUMN) 1 p.m.(COLUMN)34 Birmingham(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)37 Brussets(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)36 Cairo(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)61 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)57 Copenhagen(COLUMN)fog(COLUMN) 1 p.m.(COLUMN)32 Dublin(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)46 Geneva(COLUMN)pt. cldy(COLUMN) 1 p.m.(COLUMN)36 Hong Kong(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)45 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)48 London(COLUMN)haze(COLUMN) 1 p.m.(COLUMN)36 Madrid(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)43 Malta(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)63 Manila(COLUMN)cloudy(COLUMN) 8 p.m.(COLUMN)79 Moscow(COLUMN)pt. cldy(COLUMN) 3 p.m.(COLUMN) 9 New Delhi(COLUMN)pt. cldy(COLUMN) 5 p.m.(COLUMN)72 Nice(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)46 Oslo(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)28 Paris(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)34 Peking(COLUMN)clear(COLUMN) 8 p.m.(COLUMN)18 Rome(COLUMN)rain(COLUMN) 1 p.m.(COLUMN)57 Saigon(COLUMN)rain(COLUMN) 8 p.m.(COLUMN)82 Sofia(COLUMN)clear(COLUMN) 2 p.m.(COLUMN)32 Stockholm(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)32 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN)64 Tel Aviv(COLUMN)cloudy(COLUMN) 2 p.m.(COLUMN)59 Tokyo(COLUMN)pt. cldy(COLUMN) 9 p.m.(COLUMN)36 Tunis(COLUMN)clear(COLUMN) 1 p.m.(COLUMN)63 Vienna(COLUMN)snow(COLUMN) 1 p.m.(COLUMN)32 Warsaw(COLUMN)cloudy(COLUMN) 1 p.m.(COLUMN)28(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)88(COLUMN)72 Barbados(COLUMN)clear(COLUMN)84(COLUMN)73 Bermuda(COLUMN)rain(COLUMN)64(COLUMN)50 Bogota(COLUMN)clear(COLUMN)68(COLUMN)45 Calgary(COLUMN)clear(COLUMN)16(COLUMN)13 Edmonton(COLUMN)cloudy(COLUMN) 9(COLUMN)17 Havana(COLUMN)clear(COLUMN)82(COLUMN)72 Kingston(COLUMN)clear(COLUMN)86(COLUMN)75 Montego Bay(COLUMN)clear(COLUMN)86(COLUMN)73 Mexico City(COLUMN)haze(COLUMN)77(COLUMN)45 Monterrey(COLUMN)pt. cldy.(COLUMN)54(COLUMN)45 Montreal(COLUMN)snow(COLUMN)23(COLUMN)19 Nassau(COLUMN)clear(COLUMN)77(COLUMN)70 Offawa(COLUMN)snow(COLUMN)25(COLUMN)21 Regina(COLUMN)cloudy(COLUMN) 1(COLUMN)11 St. Kitts(COLUMN)clear(COLUMN)83(COLUMN)71 St. Thomas(COLUMN)pt. cldy.(COLUMN)83(COLUMN)73 Toronto(COLUMN)pt. cldy.(COLUMN)23(COLUMN)19 Vancouver(COLUMN)cloudy(COLUMN)37(COLUMN)27 Veracruz(COLUMN)pt. cldy.(COLUMN)70 61 Winnipes(COLUMN)pt. cldy.(COLUMN) 7(COLUMN)11(END TABLE)