Mountain weather
Northwest Highlands
Confidence
High for cloudy conditions with some rain on Thursday. High for a change drier conditions heading into the weekend but still some uncertainty in the details on weak weather fronts trying to come in from the Atlantic.
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Thu 21 MaySunrise:Sunset:
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Fri 22 MaySunrise:Sunset:
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Further outlook
Mountain weather hazards
Hazards apply at or above 300m, reflecting the more severe conditions which can occur at altitude.
Poor Visibility
Severe Chill Effect
Heavy Persistent Rain
Mountain weather forecast
Low cloud and rain spreading northeast in morning. Drier at times in afternoon. Windy.
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
Weather
(at 800m)
|
Weather symbols | ||||||
|
Chance of
precipitation (at 800m)
|
Chance of precipitation |
50%
|
90%
|
80%
|
60%
|
40%
|
80%
|
Wind direction and speed
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | S 33mph knots
S
33mph |
S 37mph knots
S
37mph |
SW 32mph knots
SW
32mph |
SW 28mph knots
SW
28mph |
SW 28mph knots
SW
28mph |
S 27mph knots
S
27mph |
|
900m
|
900m | S 30mph knots
S
30mph |
S 32mph knots
S
32mph |
SW 29mph knots
SW
29mph |
SW 25mph knots
SW
25mph |
SW 25mph knots
SW
25mph |
S 23mph knots
S
23mph |
|
600m
|
600m | S 18mph knots
S
18mph |
S 21mph knots
S
21mph |
SW 21mph knots
SW
21mph |
SW 19mph knots
SW
19mph |
SW 17mph knots
SW
17mph |
S 13mph knots
S
13mph |
|
300m
|
300m | S 1mph knots
S
1mph |
S 1mph knots
S
1mph |
SW 4mph knots
SW
4mph |
SW 4mph knots
SW
4mph |
SW 3mph knots
SW
3mph |
S 2mph knots
S
2mph |
|
Glen
|
Glen | E 2mph knots
E
2mph |
S 4mph knots
S
4mph |
SW 15mph knots
SW
15mph |
SW 11mph knots
SW
11mph |
S 6mph knots
S
6mph |
SE 4mph knots
SE
4mph |
Wind gust
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 38mph | 43mph | 39mph | 35mph | 34mph | 32mph |
|
900m
|
900m | 34mph | 37mph | 36mph | 32mph | 31mph | 28mph |
|
600m
|
600m | 22mph | 26mph | 29mph | 26mph | 23mph | 18mph |
|
300m
|
300m | 17mph | 21mph | 27mph | 23mph | 19mph | 14mph |
|
Glen
|
Glen | 6mph | 18mph | 27mph | 21mph | 14mph | 12mph |
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | 5 degrees Celsius 5°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 7 degrees Celsius 7°C | 9 degrees Celsius 9°C |
|
900m
|
900m | 6 degrees Celsius 6°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C |
|
600m
|
600m | 8 degrees Celsius 8°C | 9 degrees Celsius 9°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C |
|
Glen
|
Glen | 12 degrees Celsius 12°C | 13 degrees Celsius 13°C | 13 degrees Celsius 13°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C |
| Freezing Level | Freezing Level |
2500m
|
2700m
|
2400m
|
2200m
|
2100m
|
2700m
|
|
Time
|
Time |
06:00
|
09:00
|
12:00
|
15:00
|
18:00
|
21:00
|
|---|---|---|---|---|---|---|---|
|
1000m
|
1000m | -1 degrees Celsius -1°C | 1 degrees Celsius 1°C | 3 degrees Celsius 3°C | 3 degrees Celsius 3°C | 2 degrees Celsius 2°C | 4 degrees Celsius 4°C |
|
900m
|
900m | 0 degrees Celsius 0°C | 2 degrees Celsius 2°C | 4 degrees Celsius 4°C | 4 degrees Celsius 4°C | 3 degrees Celsius 3°C | 5 degrees Celsius 5°C |
|
600m
|
600m | 4 degrees Celsius 4°C | 6 degrees Celsius 6°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 7 degrees Celsius 7°C | 8 degrees Celsius 8°C |
|
300m
|
300m | 10 degrees Celsius 10°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C |
|
Glen
|
Glen | 12 degrees Celsius 12°C | 12 degrees Celsius 12°C | 11 degrees Celsius 11°C | 12 degrees Celsius 12°C | 14 degrees Celsius 14°C | 14 degrees Celsius 14°C |
| Freezing Level | Freezing Level |
2500m
|
2700m
|
2400m
|
2200m
|
2100m
|
2700m
|
Additional weather information
Meteorologist's view
Difficult navigation due to the low cloud and also feeling cold in the wet and windy conditions. Good navigation skills and full waterproofs will be required.
Weather
Rain will spread northeast to all ranges in the morning, turning heavy at times. Patchy rain or drizzle in the afternoon but this slowly fizzling out before further rain spreads northeast during the evening.
Chance of cloud-free hill tops
70% becoming 10% during the morning.
Low cloud and visibility
Most hills will be cloud-free at first but cloud and fog becoming extensive through the morning with bases 400 to 600m and patches to lower slopes. Cloud will slowly lift late afternoon and into the evening. Away from low cloud, visibility will be poor at times in rain, becoming mainly good later in the afternoon.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Weather
Overnight rain clearing. Staying largely cloudy on Friday with some patchy light rain. Best chance of dry and bright weather will be in the afternoon and in the east. Rain spreading northeast in the evening. Strong and gusty winds on the tops.
Chance of cloud-free hill tops
30%.
Maximum wind speed expected
Southwest 25 to 30mph, gusts 45mph.
Temperature
- At 800m Plus 9C rising to 12C.
- Glen Plus 13C rising to 16C, locally 19C in east.
- Freezing level Above summits.
Low cloud and visibility
Cloud rather extensive above 600m but slowly lifting and breaking through the day, especially in the east.
Ground conditions
No recent ground conditions report available.
Mountain weather information
Sat 23 May
Mainly dry and bright but still windy with chance of gales on the high summits. Perhaps some rain at first.
Sun 24 May
Quite cloudy with some patchy light rain or drizzle. Strong southwesterly winds easing.
Mon 25 May
Expected to stay mainly dry but a small chance of some sharp showers developing. Light winds.
Mountain weather information
Sat 23 May
Mainly dry and bright but still windy with chance of gales on the high summits. Perhaps some rain at first.
Sun 24 May
Quite cloudy with some patchy light rain or drizzle. Strong southwesterly winds easing.
Mon 25 May
Expected to stay mainly dry but a small chance of some sharp showers developing. Light winds.
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.