The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher hills within the adjacent Northumberland NP).
Southern Uplands
Thursday 13th August 2020
Last updated
Wednesday 12th August 2020 at
3:13 PM
Most mountains dry with light winds. Very warm and humid. Beware of dehydration. However, mainly on Pennines, locally gusty winds and on N Pennines and N & E Borders fog may persist. Isolated thunder mainly western mountains, but storms widespread Wales.
Very warm and humid. Little wind. Chance isolated thunderstorms.
Northeasterly between 15 and 25mph, the strongest wind not necessarily on higher slopes.
Fairly small.
Small risk thunderstorm
Largely or completely dry - although pockets of fine drizzle Borders morning, and west of M74 low risk isolated thunderstorms, giving intense rain, in afternoon.
Clearing most summits; but extensive much of Borders.
Banks of fog valleys and lower slopes post dawn. This will clear most areas within a few hours. However, near the Lothians and The Cheviot, fog may well persist most or all day from lower slopes up.
70%
Ranging from dull and misty near Lothians and eastern Borders to often sunny elsewhere. Hazy at best.
15C, although nearer 10C where in cloud.
Above the summits.
Southern Uplands
Friday 14th August 2020
Last updated
Thursday 13th August 2020 at
2:26 PM
East or northeasterly 15 to perhaps locally 25mph - strongest winds may extent to some lower slopes.
Fairly small - although sudden buffeting in gusts some lower slopes.
Rain very unlikely
Patches fine drizzle mainly morning Borders. Remote risk of isolated bursts of rain or possibly an isolated thunderstorm west of M74 in the afternoon.
May persist all day Borders; clearing Dumfries & Galloway.
Blanket fog off the North Sea continues to shroud the Border hills from lower slopes up, although toward the upper Tweed, the cloud may at times break up (a chance The Cheviot top may be just above the fog). Further west, the fog patchy in morning, and all clearing west of M74 by middle of day.
Rising to 90% west; 40% east.
Patchwork of sunshine near and west of M74; may be dull and misty most or all day elsewhere. Hazy - though excellent visibility many higher slopes.
15C, although 11C where in cloud in east.
Above the summits.
Southern Uplands
Saturday 15th August 2020
Last updated
Thursday 13th August 2020 at
2:26 PM
Easterly; 10 to 15mph or less.
Small.
Rain very unlikely
Remote risk of isolated thundery downpour afternoon west of M74.
Summits extensively cloud free
Patches of cloud temporarily some higher slopes in morning, and also fog in and just above many valleys for a few hours following dawn. The very low cloud may persist on even lower slopes closest to the North Sea most or all day.
80%
Intermittent sunshine, although banks of cloud above some summits. Misty or foggy widely lower slopes at first. This clearing but remaining hazy.
16C; cooler some lower slopes where in fog.
Above the summits
Remaining warm and humid. However, thundery rain will become mostly confined to Wales, whilst the Scottish Highlands are extensively dry. Overall extensive sunshine, although banks of very low cloud, mainly more eastern mountains, including those in east Wales. A change to wetter and gradually less warm conditions across Britain is likely early next week.