Mid-September is set to turn warm or very warm for many parts of the country as we draw in air from France and Spain on a southerly wind. This set up is coming about thanks to a combination of rising pressure over mainland Europe and falling pressure to the southwest, but it does not look like lasting too long with a change in the synoptic pattern taking place during the course of the coming week.
The warm air really begins to arrive across southern regions of the country during Sunday and Monday as that south/southeast wind develops, but before then we have a lot of rain to come across western parts of Scotland where 4 to 6 inches of rain could fall between Saturday night and Monday morning bringing the risk of landslides and localised flooding. We have a Weather Watch out for this so if you're in western Scotland it's worth bearing this in mind.
The attention then turns to the very warm weather expected early next week and indications show that temperatures across parts of England and Wales will widely reach the mid-high twenties, but could be as high as 30°C in places. This is not that unusual for September, but clearly with the rapidly decreasing hours of daylight and the lowering of the sun in the sky this plume won't be as hot as what a month or so ago brought.
It does look like that, after Tuesday, the warm feed will be cut off and temperatures will begin to drop back a touch. However, it looks like remaining warm for many and as high pressure rebuilds close to the north so many areas will see plenty of settled weather with even north-western regions getting an opportunity to dry out after this weekend's deluge. Winds will go more easterly though so this will draw in some slightly cooler air for the second half of the week although still very pleasant for the time of year.
METEOROLOGIST: BARBER
|