The Northwest Highlands Forecast

Areas north from Knoydart in the west, and the Great Glen towards the east (NB. Does not include Mull and areas west of Loch Linnhe, these are found in the West Highlands forecast.)

Viewing Weather Forecast for Monday 23rd September 2019
Forecast last updated on Sunday 22nd September 2019 at 4:01pm

Today | Tuesday | Wednesday

Summary for all mountain areas

The remnants of several fronts will give extensive fog and patches of rain and drizzle after dawn. Conditions will slowly improve: most rain will die out and generally cloud base progressively rise. Wales, after a lull to some sun will deteriorate quickly from SW afternoon.

Headline for The Northwest Highlands

Wind soon light and rain only occasional. Cloud base slowly rising.

How windy? (On the Munros)

Southerly 15mph. But temporarily after dawn far north and Ben Wyvis, southeasterly, up to 40mph.

Effect of wind on you?

Soon small.

How Wet? (Precipitation and its impact)

A few patches of drizzly rain

Overnight rain will have cleared to pockets of rain and drizzle now and again = but total rainfall small. However, in Sutherland the overnight rain may persist for a couple of hours or so after dawn.

Cloud on the hills?

Very extensive morning; becoming mostly confined to eastern areas

Fog extensive post dawn; in some areas, particularly eastern summits in region, the fog from lower slopes up. Will gradually improve. Fog will hang on some higher slopes (and a few lower slopes) all day, but generally in afternoon, most cloud above 800 to 1050m, generally highest near the coast.

Chance of cloud free Munros?

10% rising to 60% by mid-afternoon

Sunshine?
Air clarity (below cloud)

Dull and misty post dawn. Overall slowly improving with cloud slowly thinning and mainly toward the coast breaking to give patches of sun and good visibility.

How Cold? (at 900m)

10C

Freezing Level

Above the summits.

Planning Outlook

All mountain areas of Britain from Tuesday 24th September 2019

Low pressure will dominate the weather all week, bringing frequent rain and low cloud, and intermittently strong upland winds. As several areas of low pressure track across the country, the weather pattern will often be complicated, making day to day local detail difficult to forecast. However, there remains strong evidence that the driest area will be areas near and north of the Great Glen.

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