Mountain weather
Northwest Highlands
Confidence
Unsettled and often windy with summit gales towards the end of the week, blustery Autumnal conditions. Some brighter weather to be found further north and east with the weather moving in from the Atlantic. Uncertainties in cloud details and amount of showers on any day.
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This eveningSunrise:Sunset:
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Thu 17 SepSunrise:Sunset:
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Fri 18 SepSunrise:Sunset:
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Further outlook
This evening forecast
Rain through the evening will turn heavier and more persistent for a time accompanied by strong west or southwesterly winds.
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Gales
Poor Visibility
Heavy Persistent Rain
Mountain weather forecast
Windy with frequent showers, strong and gusty westerly winds, summit gales likely.
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Time
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Time |
00:00
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03:00
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06:00
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09:00
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12:00
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15:00
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18:00
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21:00
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|---|---|---|---|---|---|---|---|---|---|
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Weather
(at 800m)
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Weather symbols | ||||||||
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Chance of
precipitation (at 800m)
|
Chance of precipitation |
30%
|
60%
|
50%
|
70%
|
90%
|
90%
|
90%
|
90%
|
Wind direction and speed
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | W 35mph knots
W
35mph |
SW 37mph knots
SW
37mph |
SW 38mph knots
SW
38mph |
SW 38mph knots
SW
38mph |
W 42mph knots
W
42mph |
W 43mph knots
W
43mph |
W 42mph knots
W
42mph |
W 39mph knots
W
39mph |
|
900m
|
900m | W 33mph knots
W
33mph |
SW 34mph knots
SW
34mph |
SW 35mph knots
SW
35mph |
SW 35mph knots
SW
35mph |
W 39mph knots
W
39mph |
W 41mph knots
W
41mph |
W 40mph knots
W
40mph |
W 36mph knots
W
36mph |
|
600m
|
600m | W 22mph knots
W
22mph |
SW 22mph knots
SW
22mph |
SW 24mph knots
SW
24mph |
SW 25mph knots
SW
25mph |
W 28mph knots
W
28mph |
W 29mph knots
W
29mph |
W 27mph knots
W
27mph |
W 24mph knots
W
24mph |
|
300m
|
300m | W 6mph knots
W
6mph |
SW 4mph knots
SW
4mph |
SW 6mph knots
SW
6mph |
SW 8mph knots
SW
8mph |
W 9mph knots
W
9mph |
W 10mph knots
W
10mph |
W 10mph knots
W
10mph |
W 9mph knots
W
9mph |
|
Glen
|
Glen | W 11mph knots
W
11mph |
SW 12mph knots
SW
12mph |
SW 12mph knots
SW
12mph |
SW 13mph knots
SW
13mph |
W 17mph knots
W
17mph |
W 18mph knots
W
18mph |
W 17mph knots
W
17mph |
W 13mph knots
W
13mph |
Wind gust
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 42mph | 45mph | 47mph | 47mph | 53mph | 55mph | 53mph | 49mph |
|
900m
|
900m | 40mph | 42mph | 44mph | 45mph | 50mph | 53mph | 51mph | 47mph |
|
600m
|
600m | 30mph | 30mph | 33mph | 34mph | 39mph | 40mph | 39mph | 35mph |
|
300m
|
300m | 29mph | 29mph | 32mph | 33mph | 38mph | 40mph | 36mph | 34mph |
|
Glen
|
Glen | 23mph | 27mph | 27mph | 28mph | 34mph | 35mph | 33mph | 27mph |
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C |
|
900m
|
900m | 6 degrees Celsius 6°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 5 degrees Celsius 5°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C |
|
600m
|
600m | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C |
|
Glen
|
Glen | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C |
| Freezing Level | Freezing Level |
1500m
|
1500m
|
1600m
|
1600m
|
1700m
|
1600m
|
1600m
|
1500m
|
|
Time
|
Time |
00:00
|
03:00
|
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | -2 degrees Celsius -2°C | -3 degrees Celsius -3°C | -4 degrees Celsius -4°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C | -4 degrees Celsius -4°C | -4 degrees Celsius -4°C | -4 degrees Celsius -4°C |
|
900m
|
900m | 0 degrees Celsius 0°C | -2 degrees Celsius -2°C | -2 degrees Celsius -2°C | -2 degrees Celsius -2°C | -2 degrees Celsius -2°C | -2 degrees Celsius -2°C | -3 degrees Celsius -3°C | -3 degrees Celsius -3°C |
|
600m
|
600m | 4 degrees Celsius 4°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C | 2 degrees Celsius 2°C |
|
300m
|
300m | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C |
|
Glen
|
Glen | 10 degrees Celsius 10°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 9 degrees Celsius 9°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C |
| Freezing Level | Freezing Level |
1500m
|
1500m
|
1600m
|
1600m
|
1700m
|
1600m
|
1600m
|
1500m
|
Additional weather information
Meteorologist's view
Summit gales with gusty winds around showers which will often be stronger in areas exposed to funnelling or on ridges. A significant wind chill can be expected too.
Weather
Showers in the west overnight, clear spells in the east. During the day showers will become frequent and prolonged for western ranges. Showers grouping together at times in the west to give longer spells of rain, some bright and dry weather at times for far north eastern hills. Becoming very blustery by mid morning with summit gales likely in and feeling quite chilly for the time of year.
Chance of cloud-free hill tops
20% associated with frequent showers
Low cloud and visibility
As showers become more frequent cloud will gather and lower with periods of low cloud above 400m, the best conditions will be found in the far northeast with a few breaks in the cloud here. Visibility will be good outwith showers turning moderate in heavier showers and poor for a time in the west in extended showers.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
A few showers during the morning and becoming cloudy as rain spreads in from the west during the morning there will be a few heavier spells in the west, the best of any brighter conditions will be around eastern hills. Drier during the late afternoon but any low cloud slow to clear. Strong southwesterly winds and a risk of summit gales on the higher peaks.
Chance of cloud-free hill tops
40%
Maximum wind speed expected
Southwesterly 30-25 with gusts 40mph.
Temperature
- At 800m Plus 5 Celsius
- Glen Plus 10 rising to 14 Celsius.
- Freezing level Above all summits
Low cloud and visibility
Low cloud will build in the west through the morning with layers above 400m, cloud more scattered with higher bases in the east. Good visibility turning moderate in rain and perhaps poor at times in heavier rain.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sat 19 Sep
A blustery, showery day with strong westerly winds, perhaps summit gales, showers more frequent in the west with the best conditions to be found in the east.
Sun 20 Sep
A few showers in the morning but winds tending to ease during the day, although still quite brisk, with some Autumnal sunshine.
Mon 21 Sep
Fresh or strong winds and some rain or showers.
Summit specific forecast
Separated from the Grampians by the Great Glen the weather forecast area includes Wester Ross, Assynt, Sutherland, Knoydart, Torridon, Glen Affric and the Cuillin Hills on the Isle of Skye.