Washington: Today - Mostly sunny, high in mid to upper 60s, low in low to mid 40s. Chance of rain is near zero today, 20 per cent tonight. Monday - Chance of rain, high in mid to upper 60s.

Maryland: Today - Mostly sunny, high in 60s, low in 40s. Monday - Chance of rain, high in 60s.

Virginia: Today - Mostly sunny, high in 60s, low in 40s. Chance of rain in southwest tonight. Monday - Rain, high near 70.

Lower Potomac and Chesapeake Bay: Today - Fair skies with visibility greater than 5 miles and variable winds at 5 to 15 knots through tonight.

West Virginia: Today - Fair today, rain tonight; highs in mid 60s to mid 70s, lows in 40s. Monday - Rain, highs in mid 60s to mid 70s.

Extended Area Outlook: For Tuesday through Thursday - Showers likely through Wednesday followed by clearing skies Wednesday night and Thursday. Highs should average in 60s to low 70s, lows in 40s to mid 50s through period. Washington's normal temperature range for this time of year is from 61 to 40s.

The National Weather Forecast for Today - Rainshowers will be general over the north half of the Pacific Coast and northern intermountain region with snow in the high elevations. Showers and occasional thundershowers will extend from the upper Great Lakes through the Ohio Valley. The Mississippi Valley and across the southern plains. Temperatures will remain cool or cold from the Pacific Coast through the intermountains, across the southern Rockies and lower Plains as well as the north where temperatures will remain mild.

The Council of Governments' Air Quality Index for yesterday showed the high reading in the Washington area during the 9 to 10 a.m. period was 23 for the pollutant, photochemical oxidants. Index values between 0 and 24 indicate good air quality. When the index exceeds 100 the air becomes hazardous and persons with lung, heart and eye problems should restrict their activity.

The National Weather Service forecasts that the Potomac River stage at little Falls will fall to 5.1 feet this morting. Local Temp., Humidity(TABLE) Time(COLUMN)T.(COLUMN)H. 12 midnight(COLUMN)42(COLUMN)36 1 a.m.(COLUMN)41(COLUMN)36 2 a.m.(COLUMN)40(COLUMN)36 3 a.m.(COLUMN)39(COLUMN)36 4 a.m.(COLUMN)38(COLUMN)35 5 a.m.(COLUMN)36(COLUMN)40 6 a.m.(COLUMN)36(COLUMN)42 7 a.m.(COLUMN)36(COLUMN)42 8 a.m.(COLUMN)40(COLUMN)37 9 a.m.(COLUMN)43(COLUMN)35 10 a.m.(COLUMN)46(COLUMN)31 11 a.m.(COLUMN)49(COLUMN)29 12 noon(COLUMN)51(COLUMN)29 1 p.m.(COLUMN)54(COLUMN)27 2 p.m.(COLUMN)55(COLUMN)26 3 p.m.(COLUMN)58(COLUMN)24 4 p.m.(COLUMN)58(COLUMN)24 5 p.m.(COLUMN)58(COLUMN)24(END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)33(COLUMN)26 Albuquerque(COLUMN)69(COLUMN)48 Amarillo(COLUMN)75(COLUMN)53 Anchorage(COLUMN)35(COLUMN)28 Asheville(COLUMN)70(COLUMN)30 Atlanta(COLUMN)72(COLUMN)44 Atlantic City(COLUMN)45(COLUMN)31 Austin(COLUMN)66(COLUMN)64 Baltimore(COLUMN)51(COLUMN)29 Billings(COLUMN)39(COLUMN)25 Birmingham(COLUMN)75(COLUMN)43 Bismarck(COLUMN)40(COLUMN)31 Boise(COLUMN)54(COLUMN)24 Boston(COLUMN)43(COLUMN)32 Brownsville(COLUMN)81(COLUMN)72 Buffalo(COLUMN)37(COLUMN)21 Burlington, Vt.(COLUMN)29(COLUMN)27 Casper(COLUMN)43(COLUMN)25 Charleston, S.C.(COLUMN)66(COLUMN)51 Ch's'town, W.Va(COLUMN)53(COLUMN)27 Charlotte, N.C.(COLUMN)70(COLUMN)40 Cheyenne(COLUMN)53(COLUMN)29 Chicago(COLUMN)62(COLUMN)37 Cincinnati(COLUMN)56(COLUMN)30 Cleveland(COLUMN)36(COLUMN)22 Columbia, S.C.(COLUMN)73(COLUMN)42 Columbus, O.(COLUMN)50(COLUMN)30 Dal.-Ft. Wt.(COLUMN)61(COLUMN)58 Dayton(COLUMN)54(COLUMN)32 Denver(COLUMN)68(COLUMN)33 Des Moines(COLUMN)68(COLUMN)45 Detroit(COLUMN)42(COLUMN)26 Duluth(COLUMN)39(COLUMN)30 El Paso(COLUMN)68(COLUMN)51 Fairbanks(COLUMN)25(COLUMN)09 Fargo(COLUMN)56(COLUMN)35 Flagstaff(COLUMN)39(COLUMN)21 Great Falls(COLUMN)48(COLUMN)29 Hartford(COLUMN)38(COLUMN)29 Helena(COLUMN)50(COLUMN)29 Honolulu(COLUMN)84(COLUMN)70 Houston(COLUMN)66(COLUMN)63 Indianapolls(COLUMN)59(COLUMN)33 Jackson, Miss.(COLUMN)73(COLUMN)53 Jacksonville(COLUMN)74(COLUMN)43 Juneau(COLUMN)35(COLUMN)34 Kansas City(COLUMN)69(COLUMN)55 Las Vegas(COLUMN)50(COLUMN)37 Little Rock(COLUMN)69(COLUMN)55 Los Angeles(COLUMN)53(COLUMN)43 Louisville(COLUMN)64(COLUMN)37 Memphis(COLUMN)76(COLUMN)48 Miami Beach(COLUMN)74(COLUMN)71 Midland(COLUMN)73(COLUMN)56 Milwaukee(COLUMN)92(COLUMN)33 Mpls.-St. Paul(COLUMN)68(COLUMN)51 Nashville(COLUMN)70(COLUMN)39 New Orleans(COLUMN)73(COLUMN)56 New York(COLUMN)42(COLUMN)32 Norfolk(COLUMN)54(COLUMN)42 North Plattle(COLUMN)71(COLUMN)39 Oklahoma City(COLUMN)60(COLUMN)58 Omaha(COLUMN)66(COLUMN)56 Orlando(COLUMN)78(COLUMN)54 Philadelphia(COLUMN)49(COLUMN)32 Phoenix(COLUMN)71(COLUMN)46 Pittsburgh(COLUMN)43(COLUMN)22 Portland, Me.(COLUMN)36(COLUMN)28 Portland, Ore.(COLUMN)54(COLUMN)46 Providence(COLUMN)42(COLUMN)32 Raleigh(COLUMN)64(COLUMN)31 Rapid City(COLUMN)47(COLUMN)33 Reno(COLUMN)51(COLUMN)21 Richmond(COLUMN)58(COLUMN)33 St. Louis(COLUMN)69(COLUMN)44 St. Prbg.-Tampa(COLUMN)74(COLUMN)60 Salt lake City(COLUMN)41(COLUMN)28 San Antonio(COLUMN)71(COLUMN)66 San Diego(COLUMN)59(COLUMN)46 San Francisco(COLUMN)82(COLUMN)52 San Juan, P.R.(COLUMN)86(COLUMN)73 St. Ste. Marie(COLUMN)27(COLUMN)18 Seattle(COLUMN)51(COLUMN)43 Shreveport(COLUMN)67(COLUMN)57 Sioux Falls(COLUMN)64(COLUMN)50 Spokane(COLUMN)49(COLUMN)35 Syracuse(COLUMN)36(COLUMN)25 Tucson(COLUMN)72(COLUMN)41 Washington(COLUMN)51(COLUMN)35 Wichita(COLUMN)67(COLUMN)60(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)T. Aberdeen(COLUMN)rain(COLUMN)1 p.m.(COLUMN)39 Amsterdam(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)50 Ankara(COLUMN)clear(COLUMN)3 p.m.(COLUMN)52 Athens(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)63 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)59 Berlin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Cairo(COLUMN)clear(COLUMN)2 p.m.(COLUMN)77 Casablance(COLUMN)cloudy(COLUMN)noon(COLUMN)64 Copenhagen(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43 Dublin(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)48 Geneva(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Hong Kong(COLUMN)clear(COLUMN)8 p.m.(COLUMN)68 Lisbon(COLUMN)cloudy(COLUMN)noon(COLUMN)59 London(COLUMN)haze(COLUMN)1 p.m.(COLUMN)48 Madrid(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)63 Malta(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Manila(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)72 Moscow(COLUMN)cloudy(COLUMN)3 p.m.(COLUMN)39 New Delhi(COLUMN)clear(COLUMN)5 p.m.(COLUMN)84 Nice(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)59 Oslo(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)41 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)52 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)48 Rome(COLUMN)clear(COLUMN)1 p.m.(COLUMN)64 Saigon(COLUMN)clear(COLUMN)8 p.m.(COLUMN)82 Sofia(COLUMN)clear(COLUMN)2 p.m.(COLUMN)63 Stockholm(COLUMN)clear(COLUMN)1 p.m.(COLUMN)39 Sydney(COLUMN)clear(COLUMN)10 p.m.(COLUMN)72 Tel Aviv(COLUMN)clear(COLUMN)2 p.m.(COLUMN)75 Tokyo(COLUMN)clear(COLUMN)9 p.m.(COLUMN)57 Tunis(COLUMN)clear(COLUMN)1 p.m.(COLUMN)66 Vienna(COLUMN)clear(COLUMN)1 p.m.(COLUMN)61 Warsaw(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)43(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)clear(COLUMN)90(COLUMN)72 Barbados(COLUMN)pt. cldy(COLUMN)82(COLUMN)75 Bermuda(COLUMN)rain(COLUMN)63(COLUMN)52 Bonota(COLUMN)cloudy(COLUMN)72(COLUMN)50 Calgary(COLUMN)clear(COLUMN)45(COLUMN)28 Edmonton(COLUMN)pt. cldy(COLUMN)43(COLUMN)23 Havana(COLUMN)fair(COLUMN)86(COLUMN)70 Kingston(COLUMN)fair(COLUMN)85(COLUMN)73 Monteso Bay(COLUMN)fair(COLUMN)87(COLUMN)73 Mexico City(COLUMN)cloudy(COLUMN)81(COLUMN)55 Monterrey(COLUMN)cloudy(COLUMN)81(COLUMN)68 Montreal(COLUMN)clear(COLUMN)30(COLUMN)23 Nassau(COLUMN)sunny(COLUMN)77(COLUMN)66 Ottawa(COLUMN)clear(COLUMN)34(COLUMN)19 Regina(COLUMN)cloudy(COLUMN)41(COLUMN)23 St. Kitts(COLUMN)pt. cldy(COLUMN)86(COLUMN)70 St. Thomas(COLUMN)sunny(COLUMN)87(COLUMN)70 Toronto(COLUMN)clear(COLUMN)36(COLUMN)21 Vancouver(COLUMN)cloudy(COLUMN)48(COLUMN)39 Veracruz(COLUMN)sunny(COLUMN)86(COLUMN)72 Winnipeg(COLUMN)snow(COLUMN)43(COLUMN)32(END TABLE)