THE MIDWEEK rains and mild temperatures eroded the snow base at some area ski resorts, but that may not matter if the weekend forecast of snow and frigid weather materializes. Before you go, check with the resort.

The Nation's Capital Chapter of the National Handicapped Sports and Recreation Association and the Coca-Cola Foundation are sponsoring a learn-to-ski clinic for handicapped persons at Hidden Valley Resort in Somerset, Pennsylvania this weekend through Sunday. Call 814/443-6454 for more information. The NHSRA chapter also offers individual instruction for handicapped skiers. Call Anya McConkey at 543-2877 or the national NHSRA headquarters at 652-7505.

Here's a look at ski resorts within a six-hour drive of Washington: BIG BOULDER, 225 miles.

LAKE HARMONY, PA. 717/722-0101.

Base of 28 to 40 inches, with a granular surface. Eleven slopes open and seven lifts operating. Reciprocal lift tickets with Jack Frost Mountain, 6 miles away. Snow report: 717/722-0104. BLUE KNOB, 150 miles.

CLAYSBURG, PA. 814/239-5111.

Base up to 35 inches, with a surface of packed powder. Twelve to 14 trails open and seven lifts operating. BRYCE MOUNTAIN, 120 miles.

BASYE, VA. 703/856-2121.

Base up to 35 inches, with a granular surface. Four slopes open and four lifts operating. Two slalom races set Saturday. Snow report: 703/856-2151. CANAAN VALLEY, 180 miles.

DAVIS, W.VA. 304/866-4121 or 800/225-5982.

Base of 23 to 43 inches, with a loose granular surface. Thirteen trails open and three lifts operating. CRANBERRY NORDIC CENTER, 225 miles.

MARLINTON, W.VA. 304/572-3771.

Base up to six inches, with a wet granular surface. Sixteen kilometers of trails open. Snow report: 800/225-5982. DOE MOUNTAIN, 155 miles.

MACUNGIE, PA. 215/682-7109.

Base of 20 to 42 inches, with a packed-powder and granular surface. Ten slopes open and seven lifts operating. Snow report: 215/682-7107. ELK RIVER TOURING CENTER, 225 miles.

SLATYFORK, W.VA. 304/572-3771

Base up to four inches with a wet granular surface. Twelve kilometers of trails open, with six kilometers of machine-set trails. Skating clinics offered this weekend. Snow report: 800/225-5982. HIDDEN VALLEY, 191 miles.

SOMERSET, PA. 814/443-6454 or 800/458-0174.

Base of 2 to 26 inches, with a surface of wet granular. Nine slopes open and three lifts operating. THE HOMESTEAD, 200 miles.

HOT SPRINGS, VA. 703/839-5079.

Base of 15 to 30 inches, with a surface of corn snow. Seven slopes and all four lifts operating. Night skiing daily. JACK FROST MOUNTAIN, 225 miles.

WHITE HAVEN, PA. 717/443-8425.

Base of 24 to 56 inches, with a granular surface. Nineteen slopes open and seven lifts operating. Reciprocal lift tickets with Big Boulder, 6 miles away. LAUREL MOUNTAIN, 190 miles.

BOSWELL, PA. 412/238-6688.

Deteriorating conditions forced this resort to close in mid-week. Base was zero to 14 inches. The slopes may open Friday. Call first. Snow report: 412/238-4460. MASSANUTTEN, 125 miles.

HARRISONBURG, VA. 703/289-9441.

Base of 20 to 50 inches, surface of wet granular. Seven slopes open and three lifts operating. MONTAGE, 210 miles.

SCRANTON, PA. 717/969-7669.

Base of 10 to 30 inches, with a wet granular surface. Seventeen trails open and five lifts operating. SEVEN SPRINGS, 190 miles.

CHAMPION, PA. 814/352-7777 or 800/458-2313.

Base of 4 to 34 inches, with a surface of packed powder. Twenty-two to 28 slopes and trails open and 14 lifts operating. SHAWNEE MOUNTAIN, 210 miles.

SHAWNEE ON DELAWARE, PA. 717/421-7231.

Base of 20 to 60 inches, surface of granular snow. Twenty-one trails and five lifts open. Snow report: 800/742-9633. SKI LIBERTY, 65 miles

FAIRFIELD, PA. 717/642-8282.

Base of 30 to 40 inches, with a wet granular surface. Fourteen slopes open and five lifts operating. Snow report: 800/233-1134. SKI ROUNDTOP, 121 miles.

LEWISBERRY, PA. 717/432-9631.

Base of 51 to 62 inches, with a surface of wet packed snow. Eleven slopes open and eight lifts operating. Snow report: 800/233-1134. SNOWSHOE, 245 miles.

SLATYFORK, W.VA. 304/572-1000.

Base of 30 to 60 inches, with a surface of loose granular and wet snow. Twenty-seven slopes open and six lifts operating. Snow report: 800/225-5982. WINTERGREEN, 168 miles.

WINTERGREEN, VA. 800/325-2200.

Base of 22 to 72 inches, with a groomed surface. Nine slopes open and five lifts open.