Rain totals for the Tri-State area neared or exceeded 2 inches Sunday. Keefer's Web site showed Sunday's rain total in Hagerstown at 1.87 inches.
Chambersburg, Pa., weather watcher Jerry Ashway said he recorded 2.12 inches. Forecasters said 2.27 inches of rain had fallen in Morgan County, W.Va.
Keefer's Web site - www.i4weather.net - showed 3.17 inches of rain has fallen this month, matching the average rainfall.
National Weather Service forecaster Richard Hitchens said winds today could be especially strong at higher elevations, and he predicted gusts between 50 and 60 mph.
"With the ground being wet, that could be enough ... to bring down trees and power lines," Hitchens said.
AccuWeather predicted showers for today, with a chance of rain or snow showers tonight. High temperatures in the upper 40s are forecast, with lows in the mid-30s.
The National Weather Service predicted that the Potomac River at Hancock would crest Tuesday morning at 23.4 feet - less than a foot below "action stage" - before receding. The river had reached 20.17 feet at 6:15 a.m. today, the Web site shows. The river at Point of Rocks, Md., is predicted to rise a foot above the flood stage of 16 feet Tuesday, the Web site shows.
Conococheague Creek at Fairview also was predicted to crest just above a moderate stage of flooding.
Washington County Emergency Services dispatchers reported no problems because of the rain, but a Frederick County (Md.) Emergency Services dispatcher said some roads in Frederick County were closed because of flooding conditions.
Although a flood warning was in effect for small streams in Jefferson County until 6 p.m. Sunday, the rain was not expected to push the Shenandoah or Potomac rivers close to flood stage in Millville, W.Va., or Harpers Ferry, W.Va.
Temperatures around 40 degrees, which were recorded Sunday evening, were right around the average monthly low, but the high temperature was about 20 degrees colder than normal, i4weather.net shows.