Oct 31, 2016 10:52 PM
NH1 First Alert Weather: Milder Midweek, Rain By Thursday
NH1 Chief Meteorologist
National Weather Service Text Product Display High pressure will slowly sit & sink across the region Tuesday and that's a good thing as strong ridging aloft builds towards New England. Temperatures will be starting off quite chilly at dawn with lows in the the 20's and Lwr 30's. Sunshine with a light onshore wind Tuesday, along with an unseasonal cool airmass in place will help to keep high temps mostly in the Lwr 50's for the afternoon hours, slightly below normal. As high pressure slides south of New England, Clouds will be on the increase as warmer air starts to be directed towards New England. Temperatures overnight Tuesday into early Wednesday will not be as cold with lows holding in the 30's and Lwr 40's. Some areas will warming towards dawn.
A weak warm front will be lifting through the region Wednesday. Early clouds will eventually break giving way to partly sunny skies. A milder SW wind will follow in behind the front and highs will be climbing into the lwr-mid 60's by afternoon. A cold front will no moisture with it will be stalling over us Wednesday night. An area of low pressure will ride along the boundary and direct rain into New Hampshire by Thursday. Looking for thickening clouds Wednesday night and a chance of showers in western zones toward daybreak. The surface low will deepen as it moves through central New England during the day. Expect rain to overspread the region Thursday morning and will persist through the day as low pressure slowly crosses the area. Rain will be heavy at times especially by the afternoon. We will be holding onto the mild air with highs in the 50's, but the developing rain will cool temps down during the afternoon.
Low pressure will race northeast into the maritimes Thursday night. Expect rain during the evening hours to taper off just before midnight. Breezy northwesterly winds behind the low will clear skies downwind of the mountains. High pressure will build in from the west on Friday as another shortwave drops toward the region from the northwest. Looking for variable clouds in the north and mostly sunny skies towards the coastal plain. Highs will range through the 40s to near 50. Moisture starved clipper will push in from the northwest Friday night bringing increasing clouds overnight. Aside from a few passing flurries Friday night and early Saturday system should push through dry. An Upper trough will linger over the region for much of the weekend producing Partly sunny skies and cool temps. Highs both days will generally range through the 40s to near 50. High pressure will remain in control of our weather through the beginning of next week with moderating and more comfortable temperatures.