Washington: Today - Rain, high in low to mid 80s, lows in mid 50s to mid 60s. Chance of rain is 70 per cent today, 50 per cent tonight. Tuesday - Partly cloudy, high in low to mid 80s.

Maryland: Today - Rain likely today and ending tonight, highs near 80, lows in 50s to low 60s. Tuesday - Partly cloudy, highs from 70s in west to 80s in east.

Virginia: Today - Rain likely today and ending tonight, with highs ranging from 70s in west to 80s in east, lows in 50s to low 60s. Tuesday - Partly cloudy, highs form 70s in west to 80s in east.

Lower Potomac and Chesapeake Bay: Today - Rain is likely today, possible this afternoon, ending tonight. Visibility should be poor in showers, otherwise good. Winds should be southeasterly at 5 to 15 knots this morning southerly at up to 18 knots this afternoon and westerly at 10 to 15 knots tonight.

Extended Area Outlook: For Wednesday through Friday - Fair skies with highs in 70s to low 80s, lows in 50s to low 60s through period. Washington's normal temperature range for this time of year is from 76 to 57.

West Virginia: Today - Rain likely today, ending tonight, highs in 70s, lows in upper 40s to upper 50s. Tuesday - Sunny, highs in mid 60s to 70s.

The National Weather Service forecasts the potomac River stage at Little Falls should remain between 2.6 and 2.7 feet today.

Washington data at 8 p.m. (EDT) yesterday: Highest temperature since 8 a.m. yesterday, 76 degrees at midnight, 70 degrees at 8:15 a.m. Excess of temperature since Sept. 1, 88 degrees. Excess of temperature since Jan. 1, 424 degrees. Record high temperature for today, 96 degrees in 1960. Record low for today, 38 degrees in 1879. Relative humidity: Maximum, 97 per cent at 8 a.m.; minimum, 76 per cent at 2 p.m., 24-hour precipitation, none. Deficiency of precipitation since Sept. 1, 2:38 inches. Deficiency of precipitation since [WORD ILLEGIBLE] 8.79 inches. Highest [WORD ILLEGIBLE] since 8 a.m., 14 [WORD ILLEGIBLE] from the NE at [WORDS ILLEGIBLE] Weather Forecast through [WORD ILLEGIBLE] Ohio Valley, the [WORDS ILLEGIBLE] Rainshowers and occasional thunderstorm will extend from eastern North Dakota across the Great Lakes and New England, Tennessee Valley and east of the lower Mississippi Valley across the entire Atlantic Coast. Showers will also remain in the northwest from central Montana to the Pacific Coast from Washington through the northern third of California. Temperatures will be cool over New England as well as from the upper Mississippi Valley across the northern Rockies to the north half of the Pacific Coast. It will be warm from the south half of the Rockies across the Gulf of Mexico Coast and Florida through the Carolina coast. Elsewhere, temperatures will be generally mind.

Almanac Data for Monday, Sept. 26; Sun rise 6:59 a.m., sets 6:59 p.m.; moon rises 6:37 p.m., sets 6:11 a.m. Tid and 8:38 p.m.; low 2:23 a.m. and 2:46 p.m. High and low tides at the following locations can be obtained by subracting the hours indicated from the tides above. Annapolis (1 1/2); Bloody Point Lighhouse (4 1/2); Deale, Md. (a 1/2); Colonial Beach (6); Norfolk (1 1/2); Virginia Beach (1); Solomons Island (6 1/2); Point Lookout (7). Local Temp., Humidity(TABLE) time(COLUMN)T.(COLUMN)H. 12 midn.(COLUMN)76(COLUMN)82 1 a.m.(COLUMN)76(COLUMN)85 2 a.m.(COLUMN)75(COLUMN)85 3 a.m.(COLUMN)75(COLUMN)85 4 a.m.(COLUMN)74(COLUMN)82 5 a.m.(COLUMN)74(COLUMN)85 6 a.m.(COLUMN)74(COLUMN)85 7 a.m.(COLUMN)72(COLUMN)94 8 a.m.(COLUMN)71(COLUMN)97 9 a.m.(COLUMN)70(COLUMN)97 10 a.m.(COLUMN)71(COLUMN)90 11 a.m.(COLUMN)72(COLUMN)87 12 noon(COLUMN)73(COLUMN)82 1 p.m.(COLUMN)74(COLUMN)79 2 p.m.(COLUMN)75(COLUMN)76 3 p.m.(COLUMN)75(COLUMN)79 4 p.m.(COLUMN)73(COLUMN)84 5 p.m.(COLUMN)71(COLUMN)90 6 p.m.(COLUMN)71(COLUMN)90(END TABLE) Temperatures ending 8 a.m. (EDT) yesterday.(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)56(COLUMN)48 Albuquerque(COLUMN)84(COLUMN)58 Asheville(COLUMN)79(COLUMN)58 Anchorage(COLUMN)55(COLUMN)39 Asheville(COLUMN)78(COLUMN)58 Atlanta(COLUMN)81(COLUMN)64 Atlantic City(COLUMN)77(COLUMN)65 Austin(COLUMN)95(COLUMN)78 Baltimore(COLUMN)79(COLUMN)66 Billings(COLUMN)60(COLUMN)43 Birmingham(COLUMN)82(COLUMN)68 Bismarck(COLUMN)57(COLUMN)52 Boise(COLUMN)63(COLUMN)53 Boston(COLUMN)56(COLUMN)54 Brownsville(COLUMN)95(COLUMN)78 Buffalo(COLUMN)64(COLUMN)60 Burlington, Vt.(COLUMN)57(COLUMN)48 Casper(COLUMN)71(COLUMN)36 Charleston, S.C. 84(COLUMN)73 Charleston, W.Va.(COLUMN)77(COLUMN)66 Charlotte, N.C.(COLUMN)81(COLUMN)64 Cheyenne(COLUMN)74(COLUMN)40 Chicago(COLUMN)75(COLUMN)55 Cincinnati(COLUMN)75%H61 Cleveland(COLUMN)79(COLUMN)61 Columbia, S.C.(COLUMN)86(COLUMN)63 Columbus, Ohio(COLUMN)76(COLUMN)59 Dal.-Ft. Worth(COLUMN)98(COLUMN)77 Dayton(COLUMN)76(COLUMN)60 Denver(COLUMN)85(COLUMN)44 Des Monte(COLUMN)73(COLUMN)54 Detroit(COLUMN)73(COLUMN)57 Duluth(COLUMN)53(COLUMN)51 EL Paso(COLUMN)93(COLUMN)64 Fairbanks(COLUMN)49(COLUMN)40 Fargo(COLUMN)64(COLUMN)54 Flagstaff(COLUMN)76(COLUMN)41 Great Falls(COLUMN)56(COLUMN)36 Hartford(COLUMN)56(COLUMN)50 Helena(COLUMN)60(COLUMN)30 Honolulu(COLUMN)88(COLUMN)77 Houston(COLUMN)92(COLUMN)78 Indianapolis(COLUMN)76(COLUMN)62 Jackson, Miss.(COLUMN)89(COLUMN)73 Jacksonville(COLUMN)8(COLUMN)68 Juneau(COLUMN)58(COLUMN)36 Kansas City(COLUMN)77(COLUMN)55 Las Vegas(COLUMN)63(COLUMN)70 Little Rock(COLUMN)80(COLUMN)69 Los Angeles(COLUMN)87(COLUMN)63 Louisville(COLUMN)76(COLUMN)63 Memphis(COLUMN)78(COLUMN)70 Miami Beach(COLUMN)86(COLUMN)79 Midland(COLUMN)101(COLUMN)73 Milwaukee(COLUMN)73(COLUMN)55 Mpls. St. Paul(COLUMN)65(COLUMN)57 Nashville(COLUMN)77(COLUMN)65 New Orleans(COLUMN)90(COLUMN)71 New York(COLUMN)61(COLUMN)54 Norfolk(COLUMN)85(COLUMN)72 North Platte(COLUMN)81(COLUMN)67 Oklahoma City(COLUMN)89(COLUMN)67 Omaha(COLUMN)74(COLUMN)56 Orlando(COLUMN)90(COLUMN)75 Philadelphia(COLUMN)73(COLUMN)59 Phoenix(COLUMN)98(COLUMN)73 Pittsburgh(COLUMN)71(COLUMN)63 Portland, Me.(COLUMN)56(COLUMN)40 Portland, Ore.(COLUMN)62(COLUMN)50 Providence(COLUMN)57(COLUMN)50 Raleigh(COLUMN)82(COLUMN)61 Rapid City(COLUMN)68(COLUMN)41 Reno(COLUMN)80(COLUMN)38 Richmond(COLUMN)85(COLUMN)67 St. Louis(COLUMN)79(COLUMN)56 St. Prbq-Tampa(COLUMN)90(COLUMN)76 Salt Lake City(COLUMN)75(COLUMN)48 San Antonio(COLUMN)94(COLUMN)77 San Diego(COLUMN)80(COLUMN)68 San Francisco(COLUMN)65(COLUMN)56 San Juana, P.R.(COLUMN)82(COLUMN)76 St. Ste. Marie(COLUMN)60(COLUMN)50 Seattle(COLUMN)62(COLUMN)49 Shreveport(COLUMN)92(COLUMN)74 Sioux Falls(COLUMN)63(COLUMN)49 Spokane(COLUMN)54(COLUMN)40 Syracuse(COLUMN)61(COLUMN)53 Topeka(COLUMN)83(COLUMN)55 Tucson(COLUMN)95(COLUMN)67 Tulsa(COLUMN)82(COLUMN)65 Washington(COLUMN)81(COLUMN)71 Wichita(COLUMN)82(COLUMN)61(END TABLE) Temperature Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)54 Amsterdam(COLUMN)rain(COLUMN)1 p.m.(COLUMN)59 Ankara(COLUMN)pt. Cldy(COLUMN)3 p.m.(COLUMN)66 Athens(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)68 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)48 Berlin(COLUMN)clear(COLUMN)1 p.m.(COLUMN)52 Birmingham(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)63 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)93 Casablanca(COLUMN)clear(COLUMN)noon(COLUMN)75 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Hong Kong(COLUMN)Pt. Cldy(COLUMN)8 p.m.(COLUMN)81 Lisbon(COLUMN)pt. cldy(COLUMN)noon(COLUMN)72 London(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)72 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)79 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)82 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)41 New Delhi(COLUMN)clear(COLUMN)5 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)64 Peking(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)72 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)82 Sofia(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)57 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)57 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)88 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)70 Tunis(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)79 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)54 Warsaw(COLUMN)clear(COLUMN)1 p.m.(COLUMN)50(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)H.(COLUMN)L. Acapulco(COLUMN)clear(COLUMN)88(COLUMN)77 Barbados(COLUMN)pt cldy(COLUMN)88(COLUMN)79 Bermuda(COLUMN)cloudy(COLUMN)83(COLUMN)72 Bogota(COLUMN)cloudy(COLUMN)70(COLUMN)39 Calgary(COLUMN)cloudy(COLUMN)48(COLUMN)39 Culiacan(COLUMN)pt. cldy(COLUMN)93(COLUMN)79 Edmonton(COLUMN)drizzle(COLUMN)55(COLUMN)45 Havana(COLUMN)pt. cldy(COLUMN)86(COLUMN)75 Kingston(COLUMN)pt. cldy(COLUMN)88(COLUMN)79 Montego Bay(COLUMN)pt. cldy(COLUMN)90(COLUMN)75 Mexico City(COLUMN)pt. cldy(COLUMN)81(COLUMN)55 Monterrey(COLUMN)pt. cldy(COLUMN)91(COLUMN)73 Montreal(COLUMN)cloudy(COLUMN)64(COLUMN)48 Nassau(COLUMN)fair(COLUMN)86(COLUMN)72 Ottawa(COLUMN)rain(COLUMN)64(COLUMN)48 Regina(COLUMN)rain(COLUMN)54(COLUMN)48 St. Kitts(COLUMN)clear(COLUMN)89(COLUMN)75 Toronto(COLUMN)cloudy(COLUMN)57(COLUMN)54 Vancouver(COLUMN)clear(COLUMN)59(COLUMN)46 Veracruz(COLUMN)fair(COLUMN)90(COLUMN)73 Winnibeg(COLUMN)drizzle(COLUMN)55(COLUMN)50(END TABLE)