A snowplow makes its way down Lake Avenue in Manchester early Wednesday morning. Freezing rain and snow made roads slick overnight, delaying and closing schools throughout the state.

MANCHESTER -- An overnight storm that started as rain in the southern half of the state made travel difficult and delayed the start of school in many towns Wednesday.

A crash on Interstate 89 South had closed the right lane about 7 a.m., according to the state Department of Transportation, while the northbound left lane was closed by a crash near Exit 1 about 6:30 a.m.

Snowy interstate

Traffic was slow and the road icy and wet as commuters head north on Interstate 93 in Manchester early Wednesday. Overnight freezing rain and snow made traveling slow and delayed or closed schools across the state.

WMUR-TV was reporting 434 delays and closings at 7:15 a.m. Most school districts, including Manchester and area towns, were under a two-hour delay. Districts further north were closed for the day.

A Winter Weather Advisory was in effect until 11 a.m., according to the National Weather Service. Forecasters were calling for rain and snow, possibly mixed with freezing rain, becoming all snow after 11, with a high temperature near 37.

Later, it is epecte to beome breezy, with a west wind gusting as high as 35 mph.