Issued: 0900 Tuesday 5th June 2018
Duty forecaster: Dr. Simon Keeling
More mixed weather later in the week, early warmth in the west but cooler in the east
Much uncertainty in the forecast into the weekend and the early stages on next week. There may be some thundery showers or outbreaks of rain. Some areas may become very warm, most likely to the southeast. Indications of the weather becoming more widely mixed or unsettled into the middle of next week although still with much uncertainty.
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Pressure stays generally high to the north on Friday, but low pressure will be to the east as well. There is the risk of cloudier skies and a weak front affecting England and Wales, bringing some showery spots of rain. Broken cloud for Scotland and Ireland. Some bright or sunny spells in southern and eastern areas which may trigger isolated thunderstorms in the afternoon. Potential very warm southeast. Highs at 17C on eastern coasts, 21 to 24C in the sunshine but to 27C in the southeast.
Lower pressure in the south of the UK on Saturday. This may bring some thundery rain across many western and central areas, perhaps affecting Ireland and western Scotland too. Note that confidence is considered low. Drier weather reaching the east and south where there will be the best of the sunshine. Highs at 25C in eastern England, 18C in the west.
Confidence remains low in the forecast detail for Sunday. There may be some thundery rain in central and southern areas, but drier in the north and west. Some models indicate a more unsettled day, others that it may be drier and warm. Decisions about actions taken because of the weather for Sunday should be taken with extreme caution at this stage. Highs at 17 to 22C.
Lower pressure may again be closer to the country on Monday, although again confidence about where it is positioned is very low. It is probably best at this stage to assume a day on thundery showers or longer spells of rain, although some areas will be drier. Highs at 17 to 23C.
A change in pressure conditions on Tuesday is expected as low pressure moves to the west of Ireland. This may push cloud and some rain into Ireland and western Scotland, whilst central and eastern areas are drier with some broken cloud. Highs at 16 to 22C.
There is better agreement for Wednesdays weather that lower pressure takes control bringing a more unsettled day with bands of rain passing eastwards. Highs at 15 to 22C.