Washington: Today - Sunny, high near 30, low in low to mid 20s. Chance of snow tonight. Chance of precipitation near zero today and 40 per cent tonight. Monday - Snow high in low to mid 30s.

Maryland and Virginia: Today - Sunny, highs in 20s to low 30s, lows near 20. Chance of snow late today in west, throughout area late tonight Monday - Snow, highs in 20s and 30s.

Lower Potomac and Chesapeakd Bay: Today - Fair today with chance of snow tonight. Visibility should be 5 miles or more today, decreasing to 2 miles or less in precipitation. Winds should be northwesterly at 10 to 20 knots today, decreasing to 10 knots or less tonight.

Extended Area Outlook: For Tuesday through Thursday - Partly cloudy skies Tuesday and Thursday with chance of rain or snow Wednesday. Highs should average near 40, lows in 20s. Washington's normal temperature range for this time of year is from 44 to 27.

West Virginia: Today - Cloudy, high in mid 30s, lows in mid teens to mid 20s. Snow is likely tonight. Monday - Snow, high in low to mid 30s.

he National Weather Forecast for Today - Rain will spread from the southeastern Plains across the lower Mississippi Valley into Tennessee. Snow will reach from eastern Kansas across the middle Mississippi Valley into the Ohio Valley and the western and central sections of the Great Lakes. Scattered showers with snow in the higher elevations will fall over the southern portions of the plateau and Rockies. Clear skies will prevail along the Atlantic Coast and most other areas will be partly cloudy. Temperatures will be a little warmer over the eastern third of the nation but colder from the central Rockies into the west central Plains. Mild readings are forecast over the northern Rockies Plains and the Pacific northwest.

Almanac data for Sunday, January 23 - Sun rises 7:21 a.m., sets 5:19 p.m.; moon rises 9:28 a.m., sets 9:56 p.m.

Tides: High 10:51 a.m. and 11:09 p.m., low 5:13 a.m. and 5:34 p.m. High and low tides at the following points can be obtained by subtracting the hours indicated from the tides above: Annapolis (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 9 to 10 a.m. period was 18 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 with should restrict their activity.

The National Weather Service forecasts that the Potomac River stage at Little Falls will remain near 3.3 feet today.

Washington data at 7 p.m. (EST) yesterday: Highest temperature for today, 72 degrees in 1974. Record low temperature for today, zero degrees in 1936. Deficiency of temperature since Jan. 1, 243 degrees. Relative humidity: Maximum 81 per cent at 8 a.m.; Minimum, 44 per cent at 5 p.m. 24 hour precipitation, trace. Deficiency of precipitation since Jan. 1, .46 inches. Highest observed wind since 7 a.m., 23 miles per hour from the N.W. at 10:53 a.m. Peak gust since 7 a.m., 38 miles per hour from the N.W. at 1:05 p.m. Local Temp. Humidity(TABLE) City(COLUMN)T.(COLUMN)H. 12 mid.(COLUMN)25(COLUMN)60 1 a.m.(COLUMN)24(COLUMN)63 2 a.m.(COLUMN)23(COLUMN)65 3 a.m.(COLUMN)23(COLUMN)65 4 a.m.(COLUMN)24(COLUMN)63 5 a.m.(COLUMN)24(COLUMN)63 6 a.m.(COLUMN)25(COLUMN)60 7 a.m.(COLUMN)25(COLUMN)60 8 a.m.(COLUMN)22(COLUMN)81 9 a.m.(COLUMN)23(COLUMN)55 10 a.m.(COLUMN)24(COLUMN)48 11 a.m.(COLUMN)25(COLUMN)48 12 noon(COLUMN)26(COLUMN)48 1 p.m.(COLUMN)27(COLUMN)48 2 p.m.(COLUMN)28(COLUMN)46 3 p.m.(COLUMN)29(COLUMN)45 4 p.m.(COLUMN)29(COLUMN)45 5 p.m.(COLUMN)28(COLUMN)44(END TABLE) Temperatures ending 7 a.m. (EST) yesterday:(TABLE) City(COLUMN)H.(COLUMN)L. Albany(COLUMN)25(COLUMN)11 Albuquerque(COLUMN)46(COLUMN)35 Amarillo(COLUMN)49(COLUMN)33 Anchorage(COLUMN)31(COLUMN)30 Asheville(COLUMN)29(COLUMN)17 Atlanta(COLUMN)40(COLUMN)22 Atlantic City(COLUMN)27(COLUMN)20 Austin(COLUMN)64(COLUMN)48 Baltimore(COLUMN)30(COLUMN)19 Billings(COLUMN)38(COLUMN)32 Birmingham(COLUMN)46(COLUMN)22 Bismarck(COLUMN)25(COLUMN)21 Boise(COLUMN)27(COLUMN)23 Brownsville(COLUMN)68(COLUMN)61 Buffalo(COLUMN)22(COLUMN)07 Burlington, Vt.(COLUMN)24(COLUMN)02 Casper(COLUMN)46(COLUMN)33 Charleston, S.C.(COLUMN)44(COLUMN)30 Chrlston, W.Va.(COLUMN)22(COLUMN)18 Cheyenne(COLUMN)41(COLUMN)22 Chicago(COLUMN)20(COLUMN)00 Cincinnati(COLUMN)23(COLUMN)-03 Cleveland(COLUMN)22(COLUMN)10 Columbia, S.C.(COLUMN)46(COLUMN)24 Columbus, Ohio(COLUMN)20(COLUMN)16 Dal.-Ft. Worth(COLUMN)61(COLUMN)34 Dayton(COLUMN)22(COLUMN)07 Denver(COLUMN)50(COLUMN)23 Des Moines(COLUMN)30(COLUMN)05 Detroit(COLUMN)27(COLUMN)11 Duluth(COLUMN)24(COLUMN)-04 El Paso(COLUMN)59(COLUMN)42 Fargo(COLUMN)14(COLUMN)05 Flagstaff(COLUMN)41(COLUMN)34 Great Falls(COLUMN)49(COLUMN)24 Hartford(COLUMN)30(COLUMN)14 Helena(COLUMN)26(COLUMN)16 Honolulu(COLUMN)83(COLUMN)66 Houston(COLUMN)68(COLUMN)48 Indianapolis(COLUMN)22(COLUMN)-01 Jackson, Miss.(COLUMN)60(COLUMN)31 Jacksonville(COLUMN)50(COLUMN)28 Juneau(COLUMN)40(COLUMN)39 Kansas City(COLUMN)30(COLUMN)16 Las Vegas(COLUMN)53(COLUMN)44 Little Rock(COLUMN)52(COLUMN)25 Los Angeles(COLUMN)66(COLUMN)54 Louisville(COLUMN)28(COLUMN)07 Memphis(COLUMN)48(COLUMN)26 Miami Beach(COLUMN)64(COLUMN)40 Midland(COLUMN)59(COLUMN)44 Milwaukee(COLUMN)20(COLUMN)07 Mpls-St. Paul(COLUMN)22(COLUMN)00 Nashville(COLUMN)37(COLUMN)14 New Orleans(COLUMN)60(COLUMN)29 New York(COLUMN)26(COLUMN)18 Norfolk(COLUMN)33(COLUMN)24 North Platte(COLUMN)44(COLUMN)24 Oklahoma City(COLUMN)49(COLUMN)24 Omaha(COLUMN)31(COLUMN)15 Orlando(COLUMN)52(COLUMN)29 Philadelphia(COLUMN)26(COLUMN)16 Phoenix(COLUMN)65(COLUMN)55 Pittsburg(COLUMN)17(COLUMN)12 Portland, Me.(COLUMN)28(COLUMN)-03 Portland, Ore.(COLUMN)52(COLUMN)30 Providence(COLUMN)32(COLUMN)15 Raleigh(COLUMN)37(COLUMN)13 Rapid City(COLUMN)36(COLUMN)28 Reno(COLUMN)40(COLUMN)33 Richmond(COLUMN)36(COLUMN)19 St. Louis(COLUMN)29(COLUMN)05 St. Prbg-Tampa(COLUMN)53(COLUMN)31 Salt Lake City(COLUMN)41(COLUMN)31 San Antonio(COLUMN)63(COLUMN)51 San Diego(COLUMN)68(COLUMN)58 San Francisco(COLUMN)58(COLUMN)54 San Juan, P.R.(COLUMN)74(COLUMN)70 St. Ste. Marie(COLUMN)30(COLUMN)-10 Seattle(COLUMN)52(COLUMN)37 Shreveport(COLUMN)67(COLUMN)36 Sioux, Falls(COLUMN)25(COLUMN)01 Spokane(COLUMN)30(COLUMN)27 Syracuse(COLUMN)26(COLUMN)04 Tucson(COLUMN)61(COLUMN)53 Tulsa(COLUMN)45(COLUMN)21 Washington(COLUMN)33(COLUMN)22 Wichita(COLUMN)46(COLUMN)21(END TABLE) Temperatures Abroad Yesterday(TABLE) City(COLUMN)Weather(COLUMN)Time(COLUMN)Temp. Aberdeen(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)43 Amsterdam(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)46 Ankara(COLUMN)snow(COLUMN)3 p.m.(COLUMN)21 Athens(COLUMN)clear(COLUMN)2 p.m.(COLUMN)57 Auckland(COLUMN)clear(COLUMN)midnight(COLUMN)66 Berlin(COLUMN)rain(COLUMN)1 p.m.(COLUMN)30 Birmingham(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN) [WORD ILLEGIBLE] Brussels(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Cairo(COLUMN)cloudy(COLUMN)2 p.m.(COLUMN)59 Casablanca(COLUMN)pt. cldy(COLUMN)noon(COLUMN)61 Copenhagen(COLUMN)snow(COLUMN)1 p.m.(COLUMN)36 Dublin(COLUMN)haze(COLUMN)1 p.m.(COLUMN)46 Geneva(COLUMN)rain(COLUMN)1 p.m.(COLUMN)36 Hong Kong(COLUMN)cloudy(COLUMN)8 p.m.(COLUMN)63 Lisbon(COLUMN)rain(COLUMN)noon(COLUMN)52 London(COLUMN)rain(COLUMN)1 p.m.(COLUMN)46 Madrid(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)46 Malta(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)61 Moscow(COLUMN)clear(COLUMN)3 p.m.(COLUMN)0 New Delhi(COLUMN)cloudy(COLUMN)5 p.m.(COLUMN)63 Nice(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)63 Oslo(COLUMN)snow(COLUMN)1 p.m.(COLUMN)23 Paris(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)45 Peking(COLUMN)clear(COLUMN)8 p.m.(COLUMN)23 Rome(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)57 Saigon(COLUMN)pt. cldy(COLUMN)8 p.m.(COLUMN)81 Sofia(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)43 Stockholm(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)23 Tel Aviv(COLUMN)pt. cldy(COLUMN)2 p.m.(COLUMN)59 Tokyo(COLUMN)cloudy(COLUMN)9 p.m.(COLUMN)37 Tunis(COLUMN)cloudy(COLUMN)1 p.m.(COLUMN)59 Vienna(COLUMN)storm(COLUMN)1 p.m.(COLUMN)30 Warsaw(COLUMN)pt. cldy(COLUMN)1 p.m.(COLUMN)23(END TABLE) Temperatures (Western Hemisphere)(TABLE) City(COLUMN)Weather(COLUMN)High(COLUMN)Low Acapulco(COLUMN)cloudy(COLUMN)86(COLUMN)75 Barbados(COLUMN)cloudy(COLUMN)85(COLUMN)75 Bermuda(COLUMN)rain(COLUMN)65(COLUMN)54 Bogota(COLUMN)cloudy(COLUMN)68(COLUMN)44 Calgary(COLUMN)clear(COLUMN)46(COLUMN)12 Culiacan(COLUMN)cleat(COLUMN)82(COLUMN)63 Edmonton(COLUMN)clear(COLUMN)36(COLUMN)21 Havana(COLUMN)clear(COLUMN)68(COLUMN)59 Kingston(COLUMN)cloudy(COLUMN)86(COLUMN)75 Montego Bay(COLUMN)cloudy(COLUMN)71(COLUMN)68 Mexico City(COLUMN)haze(COLUMN)72(COLUMN)50 Monterrey(COLUMN)cloudy(COLUMN)59(COLUMN)57 Montreal(COLUMN)cloudy(COLUMN)21(COLUMN)0 Nassau(COLUMN)clear(COLUMN)67(COLUMN)57 Ottawa(COLUMN)clear(COLUMN)18(COLUMN)-2 Regina(COLUMN)clear(COLUMN)23(COLUMN)18 St. Kitts(COLUMN)clear(COLUMN)85(COLUMN)73 Toronto(COLUMN)clear(COLUMN)23(COLUMN)1 Vancouver(COLUMN)clear(COLUMN)46(COLUMN)30 Vercruz(COLUMN)cloudy(COLUMN)73(COLUMN)55 Winnepeg(COLUMN)cloudy(COLUMN)19(COLUMN)9(END TABLE)