Washington: Today - Rain, high in the mid 60s, low in upper 60s. The chance of rain is 30 per cent today. 70 per cent tonight. Thursday - Rain, high in the mid 60s.

Maryland and Virginia: Today - Rain, highs in the 60s, lows from the low 50s to the low 60s. Thursday - Rain, highs in the 60s.

Lower Potomac and Chesapeake Bay: Today - Rain with visibility of from 3 to 5 miles. Wind will be from the east at from 20 to 30 knots. Waves in unprotected waters will be from 2 to 3 feet, except for near 5 feet at the mouth of the bay.

Extended Area Forecast for Friday through Sunday. Rain on Friday, sunny on Saturday and Sunday. Highs will be in the 60s, lows from the 30s to the 60s. Normal Washington temperatures for the period are a high of 62 and a low 43.

West Virginia: Today - Cloudy, chance of rain, highs will be from the upper 50s to the 60s, lows from the mid 40s to the mid 60s. Thursday - Cloudy, chance of rain, highs from the upper 50s to the upper 60s.

The National Weather Forecast for today - There will be showers from the northern Rockies, and showers and thunderstorm from the Mississippi valley through to the east coast from Virginia to northern Florida. Snow is possible in higher elevations of the northern Rockies. Widely scattered showers are possible from maryland through the lower Great Lakes and southern New England, as well as in northern California. Temperatures will be mild from the Great Lakes and Ohio valley through New England, along the Gulf Coast, and over Florida. Most of the California coast will be warm. The remainder of the country will be mostly good.

Almanac Data for Today - Sun rises 6:36 a.m., sets 6:07 p.m., moon rises 10:29 p.m., sets 11:54. Tides: high 6:45 a.m. and 6:47 p.m., low 11:57 a.m. High and low tides at the following locations can be obtained by subtracting the hours indicated from the tides above. Annapolis --, Bloody Point Lighthouse --Oeale Md. (4 1/2); Colonial Beach (6); Norfolk --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 16 for the pollutant, carbon monoxide. Index values between zero and 24 indicate good air quality. When the index exceeds 109, 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 staple at Little Falls should be near 32 feet today. Loacl Temp., Humidity.(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midn.(COLUMN)54(COLUMN)69 1 a.m.(COLUMN)54(COLUMN)61 2 a.m.(COLUMN)54(COLUMN)69 3 a.m.(COLUMN)50(COLUMN)71 4 a.m.(COLUMN)53(COLUMN)69 5 a.m.(COLUMN)53(COLUMN)71 6 a.m.(COLUMN)52(COLUMN)74 7 a.m.(COLUMN)60(COLUMN)74 8 a.m.(COLUMN)52(COLUMN)74 9 a.m.(COLUMN)54(COLUMN)72 10 a.m.(COLUMN)56(COLUMN)69 11 a.m. 61(COLUMN)67 12 noon(COLUMN)61(COLUMN)67 1 p.m.(COLUMN)62(COLUMN)67 2 p.m.(COLUMN)63(COLUMN)67 3 p.m.(COLUMN)61(COLUMN)81 4 p.m.(COLUMN)60(COLUMN)84 5 p.m.(COLUMN)60(COLUMN)84 6 p.m.(COLUMN)61(COLUMN)73 7 p.m.(COLUMN)61(COLUMN)75(END TABLE) Temperatures ending 8 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)59(COLUMN)30 Albuquerque(COLUMN)68(COLUMN)37 Amarilio(COLUMN)70(COLUMN)45 Anchorage(COLUMN)36(COLUMN)29 Asheville(COLUMN)60(COLUMN)42 Atlanta(COLUMN)62(COLUMN)51 Atlantic City(COLUMN)60(COLUMN)52 Austin(COLUMN)87(COLUMN)65 Baltimore(COLUMN)60(COLUMN)49 Billings(COLUMN)48(COLUMN)29 Birmingham(COLUMN)68(COLUMN)53 Bismarck(COLUMN)53(COLUMN)35 Boise(COLUMN)51(COLUMN)36 Boston(COLUMN)55(COLUMN)41 Brownsville(COLUMN)90(COLUMN)76 Buffalo(COLUMN)63(COLUMN)44 Burlington(COLUMN)57(COLUMN)36 Cesper(COLUMN)46(COLUMN)19 Charleston, S.C.(COLUMN)56(COLUMN)56 Charleston, W. Va.(COLUMN)64(COLUMN)51 Charlotte, N.C.(COLUMN)64(COLUMN)53 Chevenne(COLUMN)44(COLUMN)25 Chicago(COLUMN)64(COLUMN)60 Cincinnati(COLUMN)66(COLUMN)53 Cleveland(COLUMN)65(COLUMN)49 Columbia, S.C.(COLUMN)69(COLUMN)54 Columbus(COLUMN)62(COLUMN)49 Dal-Ft. Worth(COLUMN)89(COLUMN)69 Dayton(COLUMN)67(COLUMN)54 Denver(COLUMN)56(COLUMN)23 Des Moines(COLUMN)67(COLUMN)49 Detroit(COLUMN)60(COLUMN)51 Duluth(COLUMN)49(COLUMN)38 El Paso(COLUMN)76(COLUMN)58 Fairbanks(COLUMN)15(COLUMN)14 Fargo(COLUMN)62(COLUMN)35 Flagstaff(COLUMN)57(COLUMN)29 Great Falls(COLUMN)50(COLUMN)29 Hartford(COLUMN)59(COLUMN)35 Helena(COLUMN)27(COLUMN)28 Honolulu(COLUMN)89(COLUMN)75 Houston(COLUMN)87(COLUMN)72 Indianapolis(COLUMN)70(COLUMN)59 Jackson, Miss.(COLUMN)77(COLUMN)59 Jacksonville(COLUMN)71(COLUMN)59 Juneau(COLUMN)41(COLUMN)30 Kansas City(COLUMN)71(COLUMN)62 Las Vegas(COLUMN)78(COLUMN)53 Los Angeles(COLUMN)73(COLUMN)56 Louisville(COLUMN)67(COLUMN)53 Memphis(COLUMN)75(COLUMN)64 Miami Beach(COLUMN)82(COLUMN)67 Midland-Obessa(COLUMN)83(COLUMN)59 Mois St. Paul(COLUMN)61(COLUMN)36 Milwaukee(COLUMN)60(COLUMN)53 Nashville(COLUMN)70(COLUMN)53 New Orleans(COLUMN)62(COLUMN)69 New York(COLUMN)54(COLUMN)47 Norfold(COLUMN)66(COLUMN)59 North Platte(COLUMN)60(COLUMN)40 Oklahoma City(COLUMN)77(COLUMN)56 Omaha(COLUMN)67(COLUMN)45 Orlando(COLUMN)82(COLUMN)61 Philadelphia(COLUMN)58(COLUMN)45 Phoenix(COLUMN)80(COLUMN)57 Pittsburgh(COLUMN)59(COLUMN)41 Portland, Maine(COLUMN)52(COLUMN)23 Portland, Ore.(COLUMN)56(COLUMN)47 Providence(COLUMN)57(COLUMN)33 Releigh(COLUMN)67(COLUMN)52 Rapid City(COLUMN)53(COLUMN)28 Reno(COLUMN)57(COLUMN)29 Richmond(COLUMN)64(COLUMN)49 St. Louis(COLUMN)69(COLUMN)64 St. Prbg. Tampa(COLUMN)83(COLUMN)56 Salt Lake City(COLUMN)63(COLUMN)31 San Antonio(COLUMN)83(COLUMN)64 San Diego(COLUMN)72(COLUMN)59 San Francisco(COLUMN)64(COLUMN)54 San Juan(COLUMN)66(COLUMN)75 St. Stelarie(COLUMN)56(COLUMN)46 Seattle(COLUMN)51(COLUMN)45 Streveport(COLUMN)83(COLUMN)64 --Falls(COLUMN)67(COLUMN)36 Spoklane(COLUMN)47(COLUMN)37 Syracuse(COLUMN)47(COLUMN)37 Tooewa(COLUMN)77(COLUMN)53 Tudson(COLUMN)78(COLUMN)52 Tulsa(COLUMN)78(COLUMN)52 Washington(COLUMN)61(COLUMN)52 Wichita(COLUMN)74(COLUMN)58(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Double up in 19.1 set 9.5 full(COLUMN)Bw Aberdeen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)43 Amsterdam(COLUMN)clear(COLUMN)1 p.m.(COLUMN)52 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)55 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)51 Berlin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)52 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Brussels(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)63 Copenhagen(COLUMN)pt cldy(COLUMN)1 p.m.(COLUMN)54 Dublin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Geneva(COLUMN)pt cldy(COLUMN)1 p.m. 56 Hong Kong(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)83 Lisbon(COLUMN)clear(COLUMN)noon(COLUMN)64 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)55 Madrid(COLUMN)pt. cldy(COLUMN)1 p.m. 58 Malta(COLUMN)pt. cldy(COLUMN)73 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)89 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)37 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)66 Nice(COLUMN)pt cldy(COLUMN)1 p.m.(COLUMN)65 Oslo(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Paris(COLUMN)clear(COLUMN)7 p.m.(COLUMN)55 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)45 Rome(COLUMN)rain(COLUMN)1 p.m.(COLUMN)64 Saigon(COLUMN)rain(COLUMN)8 p.m.(COLUMN)82 --(COLUMN)pt. cldy(COLUMN)7 p.m.(COLUMN)50 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)60 Sydney(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)77 Tel Aviv(COLUMN)clear(COLUMN)9 p.m.(COLUMN)72 Tokyo(COLUMN)clear(COLUMN)6 p.m.(COLUMN)72 Tunis(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)73 Vienna(COLUMN)rain(COLUMN)1 p.m.(COLUMN)53 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 TR FOR ADD 8 (EIGHT)(END TABLE) Temperature (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)90(COLUMN)77 Bermuda(COLUMN)cloudy(COLUMN)78(COLUMN)70 Bogota(COLUMN)pt cldy(COLUMN)66(COLUMN)57 Clagary(COLUMN)pt cldy(COLUMN)66(COLUMN)57 Culiacan(COLUMN)cloudy(COLUMN)95(COLUMN)72 Edmonton(COLUMN)clear(COLUMN)48(COLUMN)73 Havana(COLUMN)cloudy(COLUMN)64(COLUMN)73 Kingston(COLUMN)clear(COLUMN)88(COLUMN)78 Montego Bay(COLUMN)clear(COLUMN)88(COLUMN)76 Mexico City(COLUMN)haze(COLUMN)77(COLUMN)63 Monterrey(COLUMN)haze(COLUMN)84(COLUMN)71 Montreal(COLUMN)clear(COLUMN)54(COLUMN)37 Nassau(COLUMN)clear(COLUMN)87(COLUMN)68 Ottawa(COLUMN)pt cldy(COLUMN)55(COLUMN)34 Regina(COLUMN)clear(COLUMN)50(COLUMN)28 St. Kitts(COLUMN)cloudy(COLUMN)87(COLUMN)74 St. Thomas(COLUMN)cloudy(COLUMN)65(COLUMN)43 Vancouver(COLUMN)rain(COLUMN)50(COLUMN)41 Vercurz(COLUMN)haze(COLUMN)88(COLUMN)73 Winnipeg(COLUMN)clear(COLUMN)57(COLUMN)36(END TABLE)