Mount Washington Valley Forecast

The upper level trough that has been steering our weather over the past several days will continue its gradual movement towards the Northeast through tomorrow. During this time, two areas of low pressure will influence our weather. The first is an area of surface low pressure, currently over NY State, will be dragged along the Saint Lawrence River Valley, continually spinning in spokes of unsettled weather. The second will be a low ride along the fringes of the trough, currently over PA, which will ride up the coast later this afternoon into the evening. As a result, rain showers are expected through the forecast period statewide, and after diurnal heating sets off some instability, afternoon thunderstorms may pass, with the strongest in the south. Some stronger convective cells may contain heavy rains, small hail, or high winds in addition to frequent lightning. Tomorrow, steadier rain will become more intermittent and confined more to the north with mostly convective cells as the centers of the lows begin to depart. A weak ridge will begin to build behind the departing low cresting in by Sunday. This transition will allow for skies to begin to clear in the south as early as tomorrow afternoon and spreading north by Sunday. Sunday will be a fair day with the high briefly cresting and then sliding offshore overnight as yet another upper level trough approaches. Overrunning showers with the trough are expected as early as Sunday night with steadier rain expected by Monday as the first in another series of shortwaves begins to move through. Unsettled and cooler weather looks to continue until at least Wednesday if not beyond as it looks like this trough will once again be a slow mover similar to this pasts weeks. There is a bit of hope though as the blocking high over Europe is showing signs of waning.

Today:

Mostly cloudy w/ a chance of showers/thunderstorms. Areas of fog and drizzle early.

Highs: around 70°F

Wind: Variable and light

Tonight:

Mostly cloudy w/ a chance of showers/evening thunderstorms. Patchy fog.

Lows: upper 50s°F

Wind: Variable and light

Tomorrow:

Mostly cloudy becoming partly cloudy. Chance of showers/afternoon thunderstorms.

Highs: mid 70s°F

Lows: around 50°F

Sunday

Partly cloudy. Chance of showers overnight.

Highs: upper 70s°F

Lows: lower 50s°F

Monday

Cloudy w/ showers likely.

Highs: upper 60s°F

Lows: around 50°F

Tuesday

Mostly cloudy w/ a chance of showers.

Highs: upper 60s°F

Lows: around 50°F