Widespread rain is expected across Northeast Ohio on Wednesday, ushering in a period of below-average temperatures and potential for frost and freezing conditions. This is a shift from the recent spring warmth the region has experienced. A slow-moving system and incoming Canadian air will combine to bring cooler, damp conditions through the end of the week, potentially impacting early-season plants and outdoor activities. Rainfall totals are expected to range from a quarter to a half-inch across much of Northeast Ohio, with locally higher amounts possible in any heavy downpours. Forecasters predict that temperatures will reach the 50s late this morning before gradually decreasing through the afternoon as winds off Lake Erie shift northward. The colder air mass, combined with periods of clearing and lighter winds, will set the stage for potential frost and even a light freeze across parts of the state. The Climate Prediction Center is indicating increased chances for below-normal temperatures across much eastern United States, with some areas potentially cold enough to support additional frost.