The Galloway hills eastward to the Lammermuir hills. The Cheviots (including higher hills within the adjacent Northumberland NP).
Southern Uplands
Wednesday 12th August 2020
Last updated
Tuesday 11th August 2020 at
3:44 PM
Very warm or hot by afternoon and very high humidity - anticipate dehydration and possible sunburn. Scattered thunderstorms will drift about slowly, mainly England and Wales, bringing locally torrential rain.
Very warm with hazy sunshine; threat thunderstorms afternoon.
Winds varying in direction, 10mph or less.
Negligible.
Risk thunderstorms
Very likely dry morning. Through afternoon, increasing threat scattered thunderstorms giving locally torrential rain.
Summits frequently cloud free
After dawn: very varied; some fog lower slopes and valleys whilst in other areas fog higher up, and some summits above low cloud. All or nearly all summits will clear by mid morning, although banks of fog in places temporarily in and after rain.
Greater than 90% by mid morning
Hazy sunshine, although cloud will build in afternoon. Visibility improving although a haze most or all day.
18C.
Above the summits.
Southern Uplands
Thursday 13th August 2020
Last updated
Tuesday 11th August 2020 at
3:44 PM
Northeasterly between 15 and 25mph, the strongest wind not necessarily on higher slopes.
Fairly small.
Small risk thunderstorm
Largely or completely dry - albeit mostly likely west of M74 risk isolated thunderstorms in afternoon. These giving locally intense rain, lasting up to an hour.
Clearing most summits
Confidence low. Broadly, hills will clear particularly west of M74 after banks of fog from valleys up post dawn. Nevertheless, throughout day, areas of fog coming and going Borders, even on lower slopes eastern Borders.
40%
Ranging from dull and misty eastern Borders to increasingly sunny with good visibility although a haze, west of M74.
11C.
Above the summits.
Southern Uplands
Friday 14th August 2020
Last updated
Tuesday 11th August 2020 at
3:44 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.
Little or no rain
Small risk of isolated pockets of rain drifting about in morning and of a thunderstorm west of M74 in the afternoon.
May persist all day Borders
Blanket fog coming in off the North Sea may well shroud the Border hills from lower slopes up, although toward the upper Tweed, the cloud may at times break up (higher tops may be above the fog). The fog patchy, and all clearing west of M74.
60%
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.
Above the summits.
Remaining warm and particularly England and Wales 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.