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Mount Washington Valley Forecast

Tuesday, September 2, 2014
4:21 AM

The warm, moist flow from the southwest will continue ahead of a cold front approaching from the west today. This flow will keep temperatures above normal as well keep conditions feeling muggy today and this evening as the front approaches. Instability ahead of the front will allow for scattered showers and thunderstorms around the state today with favorable conditions aloft for a few cells to become severe this afternoon or early this evening. Severe thunderstorms have a potential for sudden and strong gusts of wind, small hail, and heavy downpours. As the front passes overnight, a line of widespread rain and scattered thunderstorms will pass through the state. As the front slides offshore early on Wednesday, convective activity will taper and a clearing pattern will set up for the afternoon as a ridge of high pressure builds in. Despite sunshine returning on Wednesday, a cooler airflow behind the cold front will bring temperatures down to more seasonable readings around the state.

From Wednesday night through Friday, the high remains in place overhead allowing for fair skies. While the clear and calm conditions will allow for fog on a nightly basis, this will quickly burn off daily to allow for sunny days ahead. Temperatures and RH levels should remain comfortable on Thursday but Friday will likely see a return of warm and muggy conditions as a return flow sets up. The next round of unsettled weather will come Friday night into Saturday as a cold front approaches from the northwest. This will spread rain showers and thunderstorms in over the state. Behind this, a Canadian high will build for the start of next week bringing fair skies as temperatures cool to more fall-like readings around the region.

Ryan Knapp
Staff Meteorologist


Increasingly cloudy w/ a chance of showers or thunderstorms, possibly severe this afternoon.

Highs: Lower 80s; humid°F

Wind: Light and variable


Cloudy w/ showers and thunderstorms.

Lows: lower 60s; humid°F

Wind: Light and variable becoming S around 10 mph

Extended Outlook


Partly sunny trending towards clearing. Chance of morning showers or thunderstorms.

Highs: upper 70s°F

Lows: lower 50s°F


Mostly sunny.

Highs: upper 70s°F

Lows: upper 50s°F


Mostly sunny then increasingly cloudy overnight w/ a slight chance of showers or thunderstorms.

Highs: around 80°F

Lows: mid 60s°F


Partly sunny w/ a chance of showers or thunderstorms.

Highs: mid 70s°F

Lows: lower 50s°F

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