Weather Forecast

Extended Forecast  |  Significant/Hazardous Weather  |  Recreational Forecast  |  Detailed Discussion  |  Farm & Garden  |  Wind by Elevation  |  Temperature by Elevation

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Detailed Forecast

Tonight:
Mostly cloudy. Scattered evening showers south. Lows 45-55. Light, variable wind.

Sunday:
A chance of showers south, best chance near the Massachusetts border. Partly to mostly cloudy north. Highs 62-72, coolest south. Wind becoming north less than 10 mph in the Champlain Valley, and east near 10 mph in southern Vermont and New Hampshire.  Otherwise light and variable.

Sunday Night:
Mostly cloudy south, a chance of evening showers south of Rt. 11. Partly cloudy north. Lows 43-53. Light, variable wind.

Monday:
Partly to mostly sunny north.  Partly cloudy south. Highs 64-72—warmest north. Northeast wind less than 10 mph.

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Extended Forecast

Monday Night:
Mostly clear north. Partly cloudy south.  Lows 40-50.

Tuesday:
Mostly sunny north.  Partly sunny south. Highs 63-71—warmest north.

Tuesday Night:
Fair south.  Clear north.  Patchy fog. Lows 37-47, except near 50 around Lake Champlain.

Wednesday:
Sunny north, partly to mostly sunny south. Highs 63-70.

Wednesday Night:
Clear.  Patchy valley fog.  Lows 37-47, except near 50 around Lake Champlain.

Thursday:
Sunny.  Highs 65-72.

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Significant/Hazardous Weather

Today is the first day of Autumn.  The Autumnal Equinox was at 2:50 a.m. this morning.

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Recreational Forecast

Mountain Forecast:
Today:  Filtered sun through high clouds north;  thicker and lower clouds south with a few  late afternoon showers in the southern Green Mountains, a better chance through the Berkshires. Light east wind.

Sunday:  Mostly cloudy. Continued chance for showers south into Monday.  Light to gentle east through north wind.

Monday:  Mostly cloudy south.  Partly to mostly sunny northern Greens, northern Whites and northern Adirondacks.  Light northerly wind.

Wind At Lower Elevations:

Today, light variable wind,  with waves on the open waters of Lake Champlain 1 foot or less.

Sunday:  Light, variable wind, becoming north less than 10 mph in the Champlain Valley, and east near 10 mph in southern areas, with waves on the open waters of Lake Champlain 1 foot or less.

For more details on Lake Champlain, go to: https://forecast.weather.gov/product.php?site=BTV&product=REC&issuedby=BTV

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Detailed Discussion

Autumn is starting on a quiet note across the region.  We’re between two active weather systems–Tropical Storm Ophelia just inland over North Carolina and moving slowly northward toward the Delmarva peninsula, and a weak cold front associated with a vigorous mid-level disturbance in the northern branch of the polar jet stream passing across eastern Quebec well to our north.   Weak ridging at the surface prevails between these two, and will hang on through the weekend.

Moisture from Ophelia, or its remnants, will make it far enough north to drop scattered showers over the southern halves of Vermont and New Hampshire from late this afternoon through tomorrow, but rainfall amounts will be light–just a trace to .10″ where they do fall for the most part except up to .25″ along the Massachusetts border into the Berkshires.  Elsewhere, it should remain dry.

The weak cold front associated with the disturbance to our north will drift to the vicinity of the international border by early tomorrow morning, then dissipate as it sags farther south.  Only a slight wind shift and perhaps a broken band of slightly lower clouds will mark its passage.  But it will serve to shunt Ophelia’s remnants out to sea south of New England later Sunday and Monday.

Large high pressure both at the surface and aloft will then build south from central Quebec and control our weather this coming week.  At this time, it looks as though the entire week–Monday through Saturday–will be dry with light wind.  Daily highs should run in the 60s to low 70s; nighttime lows will vary widely according to terrain and water influences, running from the upper 30s to low 50s.  Most communities will see lows somewhere in the 40s.

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Farm & Garden

Rainfall Forecast:

Dry weather lasts through early afternoon over southern Vermont, southern New Hampshire and northern Massachusetts; and through the weekend from the Adirondacks and Rt. 4 north. Later today, a rising chance of a few showers in MA, spreading north to Rt. 4 and Laconia this evening, then tapering off. Coverage ranging from 20 percent near Rt. 4, and amounts of a few hundredths of an inch, up to 50 percent coverage in MA, with amounts of 0.10 to 0.20 inches. Additional showers Sunday afternoon into Monday, again south of the Adirondacks and Rt. 4, with light amounts.

Drying Conditions:
Good  drying conditions north today, with minimum relative humidity near 45 percent, while a few showers are possible south of Rt. 4 and Laconia Saturday afternoon, resulting in fair to poor drying, with minimum relative humidity between 55 and 65 percent. Good drying continues north Sunday through Tuesday, while a chance of showers south Sunday into Monday will keep drying conditions only fair at best.

Frost:
No widespread frost indicated for the foreseeable future.

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Wind by Elevation

Wind Speeds
Elevation	Today	Sunday	Monday
2000ft	light/variable	E > NE 5-10 mph	NE 5 to 10 mph
4000ft	E 5-10 mph	E -NE 10-15 mph	NE 5 to 15 mph
6000ft	SE - E 10-15 mph	SE > NE 5-15 mph	NE 5 to 20 mph

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Temperature by Elevation

Temperature at Elevation
Elevation	Today	Sunday	Monday
2000ft	Low-mid 60s	Low-mid 60s	Mid 60s
4000ft	55-60	55 to 60	Mid 50s
6000ft	45-50	45 to 50	Low 40s

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