Mount Washington Valley Forecast

A stationary frontal boundary will remain over the US-Canadian border over the forecast period. A series of weak areas of low pressure will ride along this front keeping things unsettled for the next 48 hours if not longer as models keep this feature into the middle of next week. A band of showers and thunderstorms is approaching on radar this morning and will sweep through this morning shortly after sunrise which will be followed by convective cells that will continue to generate as conditions are primed for their development. Some things making them primed according to the models are increased cape, winds increasing with height and plenty of warm, moist air. Overnight, convective cells will die down a bit as diurnal lifting is cut off but unsettled conditions will keep isolated cells going through the night. Tomorrow, the morning may see a bit of a break but another area of low pressure will approach from the Great Lakes bring showers and thunderstorms back especially during the latter half of the day into Monday. Convective cells the next 48 hours may contain heavy rain, hail, gusty winds and frequent lightning. Looking into Tuesday and Wednesday, the boundary remains and weak short waves pass continuing showers and the possibility of afternoon thunderstorms. Temperatures will cool a bit though as cooler air creeps in but tropical moisture will keep things muggy.

Today:

Partly cloudy w/ scattered showers/thunderstorms.

Highs: humid, mid 80s°F

Wind: NW around 10 mph

Tonight:

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

Lows: humid, lower 60s°F

Wind: Variable and light

Tomorrow:

Increasingly cloudy w/ developing showers/thunderstorms. Patchy fog.

Highs: humid, lower 80s°F

Lows: upper 50s°F

Monday

Cloudy w/ rain/thunderstorms likely. Patchy fog.

Highs: mid 70s°F

Lows: upper 50s°F

Tuesday

Mostly cloudy w/ a chance of showers.

Highs: upper 70s°F

Lows: mid 50s°F

Wednesday

Mostly cloudy w/ a chance of showers.

Highs: upper 70s°F

Lows: mid 50s°F