Snow and ice covered much of St. Lawrence County overnight and caution is advised on side roads, driveways, sidewalks that could potentially be slippery.

Today will be cloudy and cold with temperatures reaching 27 degrees, according to the National Weather Service.

Temperatures will dip to around 12 degree Tuesday night with clear skies, the service says.

Wednesday will be party sunny with temperatures rising to 34 degree with winds from eight to 16 mph and gusts reaching 26 mph, the service says.

The service says the weather for the rest of the week is as follows:

• • Tonight Mostly clear, with a low around 12. Northwest wind 10 to 13 mph.

• Wednesday Mostly sunny, with a high near 34. Southwest wind 8 to 16 mph, with gusts as high as 26 mph.

• Wednesday Night Partly cloudy, with a low around 25. Breezy, with a southwest wind 18 to 21 mph, with gusts as high as 32 mph.

• Thursday Sunny, with a high near 47. Breezy, with a southwest wind 18 to 21 mph, with gusts as high as 36 mph.

• Thursday Night Partly cloudy, with a low around 31. Southwest wind 10 to 14 mph.

• Friday Mostly sunny, with a high near 48. Southwest wind around 11 mph.

• Friday Night Mostly cloudy, with a low around 35. Southwest wind 7 to 9 mph.

• Saturday Partly sunny, with a high near 48. Southwest wind 7 to 9 mph.

• Saturday Night Mostly cloudy, with a low around 35. South wind around 5 mph.

• Sunday Partly sunny, with a high near 50. South wind 5 to 7 mph.

• Sunday Night A 30 percent chance of showers. Mostly cloudy, with a low around 38. South wind 5 to 7 mph.

• Monday A 40 percent chance of showers. Cloudy, with a high near 53. South wind 6 to 9 mph.