Extended Area Outlook for Tuesday through Thursday: There will be a chance of showers early Tuesday and again on Thursday, otherwise partly cloudy. Highs will average in the 60s and lows in the 40s. Normal Washington temperatures for the period are a high of 69 and a low of 49.

Washington: Today - Partly sunny and breezy, high in mid 60s, low 34 to 42 with a chance of frost in the suburbs. Chance of rain is near zero through tonight. Winds will be northeasterly at 10 to 21 mph. Monday - Partly cloudy, high in 60s.

Maryland and Virginia: Today - Partly sunny and breezy, highs in the 50s and 60s, lows from about 32 in the mountains to the low 40s in the east. Frost or freezing temperatures are likely in the mountains. Monday - Partly cloudy, high in 60s.

Lower Potomac and Chesapeake Bay: Today - Fair, visibility more than five miles. Winds will be from the northwest at 15 to 25 knots gusty. Waves in unprotected waters will be near 4 feet over the [WORD ILLEGIBLE] channel and 2 to 3 feet elsewhere.

Washington data for yesterday: Highest temperature since midnight yesterday, 70 degrees at 3:25 p.m. Lowest temperature since midnight, 60 degrees at 6:40 p.m. Deficiency of temperature since Oct. 1, 22 degrees. Excess of temperature since Jan. 1, 73 degrees. Record high temperature for today, 87 degrees in 1975. Record low temperature for today, 32 degree in 1974. Relative humidity: maximum 76 percent at 8 a.m.; minimum 36 percent at 6 p.m. Deficiency of precipitation since Oct. 1, .32 inches. Excess of precipitation since Jan. 1, 1.48 inches. Highest observed wind since 8 a.m., 23 miles per hour from the northwest at 4:53 p.m. Peak gust since 8 a.m., 32 miles per hour from the northwest at 5:41 p.m.

The Nation Yesterday: With the exception of fog and haze along the coast of southern California skies were mostly sunny from the Pacific Coast region across the Plateau and Rockies into the southern half of the Plains, lower Mississippi Valley and interior portion of the west Gulf Coast states.Rainshowers continued in the north Atlantic Coast states while widely scattered showers lingered over portions of the Ohio Valley. In southern Florida thundershower activity persisted through the afternoon hours. Temperature at midday were cool, in the 40s and 50s, from the northern half of the Plains through the Tennessee and Ohio valley into the Appalachians and most of New England. At the same time 70s, 80s and a few 90s were being enjoyed over much of California and into southern Arizona, with 60s and 70s reaching across the remainder of the southern Plateau into New Mexico, the Gulf Coast states, and Atlantic coastal region as far north as southern New England. Seasonably mild 50 and 60 degree temperatures prevailed in the northern half of the Rockies, Plateau and Pacific Coast.

The National Weather Forecast for today - Rainshowers will be scattered across the upper Mississippi Valley and north Atlantic Coast states with rain and thundershowers over southern Florida. Mostly sunny skies will prevail from the south Pacific Coast through Oregon, the Plateau, Rockies, middle Mississippi and Tennessee valleys, and across the Gulf Coast states into South Carolina. Temperatures for the eastern half of the nation will continue cool from the Plains through the Atlantic Coast. Elsewhere near seasonal normal temperature ranges are forecast.

Almanac Data for today: The sun rises 7:17 a.m., sets 6:27 a.m. Tides: high 8:16 a.m. and 8:33 p.m., low 2:22 a.m. and 2:41 p.m. High and low tides at the following locations may be obtained by subtracting the hours indicated from the hours above: Annapolis (3 1/4), Bloody Point Lighthouse (4 1/2), Deale, Md. (4 1/2), Colonial Beach (5 1/4), Norfolk (1), Virginia Beach (3/4), Solomons Island (6 1/4), Point Lookout (7).

The Council of Government's Air Quality Index for yesterday showed the high reading in the Washington area during the 10 a.m., period was 10 for the pollutant, photochemical oxidants. Index values between 0 and 25 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 remain good.

The National Weather Service forecasts the Potomac River stage at Little Falls should remain near 2.9 feet today. Local Temps., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)79(COLUMN)68 1 a.m.(COLUMN)69(COLUMN)71 2 a.m.(COLUMN)68(COLUMN)73 3 a.m.(COLUMN)69(COLUMN)71 4 a.m.(COLUMN)69(COLUMN)71 5 a.m.(COLUMN)69(COLUMN)79 6 a.m.(COLUMN)69(COLUMN)73 7 a.m.(COLUMN)69(COLUMN)73 8 a.m.(COLUMN)68(COLUMN)76 9 a.m.(COLUMN)69(COLUMN)73 10 a.m.(COLUMN)69(COLUMN)73 11 a.m.(COLUMN)68(COLUMN)66 12 noon(COLUMN)65(COLUMN)58 1 p.m.(COLUMN)64(COLUMN)58 2 p.m.(COLUMN)62(COLUMN)60 3 p.m.(COLUMN)66(COLUMN)52 4 p.m.(COLUMN)69(COLUMN)46 5 p.m.(COLUMN)67(COLUMN)42 6 p.m.(COLUMN)65(COLUMN)38 7 p.m.(COLUMN)61(COLUMN)48 8 p.m.(COLUMN)60(COLUMN)44 9 p.m.(COLUMN)56(COLUMN)57 10 p.m.(COLUMN)54(COLUMN)57 11 p.m.(COLUMN)52(COLUMN)61(END TABLE) Temperatures ending 8 p.m. (EDT) yesterday(TABLE) City(COLUMN)L(COLUMN)H Albany(COLUMN)45(COLUMN)51 Albuquerque(COLUMN)38(COLUMN)73 Amarillo(COLUMN)38(COLUMN)67 Anchorage(COLUMN)33(COLUMN)44 Asheville(COLUMN)48(COLUMN)61 Atlanta(COLUMN)54(COLUMN)67 Atlantic City(COLUMN)54(COLUMN)65 Austin(COLUMN)55(COLUMN)74 Baltimore(COLUMN)81(COLUMN)68 Billings(COLUMN)29(COLUMN)68 Birmingham(COLUMN)29(COLUMN)63 Bismarck(COLUMN)26(COLUMN)56 Boise(COLUMN)43(COLUMN)76 Boston(COLUMN)55(COLUMN)61 Brownsville(COLUMN)71(COLUMN)79 Buffalo(COLUMN)40(COLUMN)44 Burlington(COLUMN)40(COLUMN)45 Casper(COLUMN)23(COLUMN)70 Charleston S.C.(COLUMN)66(COLUMN)80 Charleston W.V.(COLUMN)48(COLUMN)59 Charlotte(COLUMN)61(COLUMN)75 Cheyenne(COLUMN)28(COLUMN)64 Chicago(COLUMN)37(COLUMN)53 Cincinnati(COLUMN)38(COLUMN)48 Cleveland(COLUMN)47(COLUMN)55 Columbia S.C.(COLUMN)59(COLUMN)79 Columbus(COLUMN)44(COLUMN)53 Dal-Ft. Worth(COLUMN)47(COLUMN)75 Dayton(COLUMN)41(COLUMN)53 Denver(COLUMN)31(COLUMN)70 Des Moines(COLUMN)36(COLUMN)57 Detroit(COLUMN)40(COLUMN)54 Duluth(COLUMN)21(COLUMN)45 El Paso(COLUMN)43(COLUMN)76 Fairbanks(COLUMN)18(COLUMN)27 Fargo(COLUMN)27(COLUMN)47 Flagstaff(COLUMN)26(COLUMN)76 Great Falls(COLUMN)30(COLUMN)73 Hartford(COLUMN)50(COLUMN)67 Helena(COLUMN)26(COLUMN)69 Honolulu(COLUMN)68(COLUMN)86 Houston(COLUMN)59(COLUMN)72 Indianapolis(COLUMN)43(COLUMN)54 Jackson, Miss.(COLUMN)47(COLUMN)66 Jacksonville(COLUMN)65(COLUMN)82 Juneau(COLUMN)38(COLUMN)45 Kansas City(COLUMN)39(COLUMN)56 Las Vegas(COLUMN)57(COLUMN)95 Little Rock(COLUMN)43(COLUMN)65 Los Angeles(COLUMN)59(COLUMN)86 Louisville(COLUMN)46(COLUMN)55 Memphis(COLUMN)45(COLUMN)64 Miami Beach(COLUMN)72(COLUMN)82 Midland-Odessa(COLUMN)41(COLUMN)67 Milwaukee(COLUMN)40(COLUMN)46 Mpls-St. Paul(COLUMN)31(COLUMN)51 Nashville(COLUMN)45(COLUMN)59 New Orleans(COLUMN)62(COLUMN)73 New York(COLUMN)52(COLUMN)68 Norfolk(COLUMN)64(COLUMN)80 North Platte(COLUMN)24(COLUMN)59 Oklahoma City(COLUMN)38(COLUMN)74 Omaha(COLUMN)38(COLUMN)56 Orlando(COLUMN)72(COLUMN)81 Philadelphia(COLUMN)52(COLUMN)74 Phoenix(COLUMN)69(COLUMN)96 Pittsburgh(COLUMN)42(COLUMN)46 Portland, Ma.(COLUMN)51(COLUMN)63 Portland, Ore.(COLUMN)43(COLUMN)75 Providence(COLUMN)51(COLUMN)64 Raleigh(COLUMN)62(COLUMN)75 Rapid City(COLUMN)27(COLUMN)62 Reno(COLUMN)32(COLUMN)83 Richmond(COLUMN)63(COLUMN)76 St. Louis(COLUMN)37(COLUMN)56 St. Prbg-Tampa(COLUMN)74(COLUMN)75 Salt Lake City(COLUMN)39(COLUMN)71 San Antonio(COLUMN)54(COLUMN)75 San Diego(COLUMN)65(COLUMN)84 San Francisco(COLUMN)57(COLUMN)70 San Juan PR.(COLUMN)77(COLUMN)74 St. Ste. Marie(COLUMN)27(COLUMN)40 Seattle(COLUMN)49(COLUMN)71 Shreveport(COLUMN)46(COLUMN)65 Sioux Falls(COLUMN)32(COLUMN)54 Spokane(COLUMN)35(COLUMN)66 Syracuse(COLUMN)40(COLUMN)45 Topeka(COLUMN)33(COLUMN)60 Tucson(COLUMN)72(COLUMN)93 Tulsa(COLUMN)40(COLUMN)74 Washington(COLUMN)60(COLUMN)70 Wichita(COLUMN)33(COLUMN)66(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp Aberdeen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)54 Armsterdam(COLUMN)fog(COLUMN)1 p.m.(COLUMN)52 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)59 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)70 Auckland(COLUMN)cloudy(COLUMN)12 a.m.(COLUMN)57 Berlin(COLUMN)clear(COLUMN)1 p.m.(COLUMN)63 Birmingham(COLUMN)smoke(COLUMN)1 p.m.(COLUMN)54 Bonn(COLUMN)clear(COLUMN)1 p.m.(COLUMN)59 Brussels(COLUMN)clear(COLUMN)1 p.m.(COLUMN)66 Casablanca(COLUMN)cloudy(COLUMN)noon(COLUMN)75 Copenhagen(COLUMN)clear(COLUMN)1 p.m.(COLUMN)57 Dublin(COLUMN)fog(COLUMN)1 p.m.(COLUMN)55 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)50 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Jerusalem(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)79 Lisbon(COLUMN)pt. cldy(COLUMN)noon(COLUMN)70 London(COLUMN)haze(COLUMN)1 p.m.(COLUMN)61 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)66 Malta(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)73 Manila(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)81 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)50 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)88 Nice(COLUMN)clear(COLUMN)1 p.m.(COLUMN)73 Oslo(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)46 Paris(COLUMN)clear(COLUMN)1 p.m.(COLUMN)70 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)57 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)75 Saigon(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)79 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)59 Stockholm(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)57 Sydney(COLUMN)cloudy(COLUMN)10 p.m.(COLUMN)59 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)61 Tunis(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)72 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Warsaw(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)fair(COLUMN)86(COLUMN)73 Barbados(COLUMN)cloudy(COLUMN)86(COLUMN)79 Bermuda(COLUMN)cloudy(COLUMN)80(COLUMN)77 Bogota(COLUMN)storm(COLUMN)57(COLUMN)40 Calgary(COLUMN)clear(COLUMN)50(COLUMN)37 Culiacan(COLUMN)clear(COLUMN)95(COLUMN)72 Edmonton(COLUMN)pt. cldy(COLUMN)54(COLUMN)37 Havana(COLUMN)rain(COLUMN)85(COLUMN)75 Kingston(COLUMN)fair(COLUMN)92(COLUMN)78 Montego Bay(COLUMN)cloudy(COLUMN)86(COLUMN)73 Mexico City(COLUMN)cloudy(COLUMN)65(COLUMN)48 Monterrey(COLUMN)pt. cldy(COLUMN)87(COLUMN)61 Montreal(COLUMN)rain(COLUMN)57(COLUMN)39 Nassau(COLUMN)pt. cldy(COLUMN)88(COLUMN)76 Ottawa(COLUMN)rain(COLUMN)55(COLUMN)39 Regina(COLUMN)pt. cldy(COLUMN)50(COLUMN)25 St. Kitts(COLUMN)pt. cldy(COLUMN)87(COLUMN)77 Toronto(COLUMN)rain(COLUMN)54(COLUMN)39 Vancouver(COLUMN)clear(COLUMN)57(COLUMN)41 Vera Cruz(COLUMN)cloudy(COLUMN)85(COLUMN)72 Winnipeg(COLUMN)cloudy(COLUMN)43(COLUMN)30(END TABLE)