Issued Thursday 16th March 2025
Issued 18th March 2025
The 14 day video forecast is usually updated weekly.
The 14 day discussion is usually updated twice each week.
Monday, Tuesday: Dry across most of the UK with variable amounts of cloud and just a low risk of isolated showers. Temperatures remain on the low side through the days and frost develops at night in areas where there are clear periods. In south western Britain rather strong winds could mitigate the risk.
Wednesday, Thursday: It remains mostly dry, although an odd showers is possible. Daytime temperatures rise and in sunny spells it starts to feel warm, especially in southern and central regions. The nights remain chilly with patchy frost.
Friday, Saturday, Sunday: A transition to more unsettled weather takes place. Showers and longer outbreaks of rain are expected to push northwards across the UK. Temperatures dip back towards the average and it could become windy at times.
Forecast confidence is high.
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Unsettled conditions are likely early on, leading to the possibility of showers or longer spells of rain in all areas. However, drier periods could become more frequent, particularly in the south. Temperatures fluctuate, but over the week as a whole they are likely to be close to the average. Frost is still possible in quieter interludes, especially in the north.
Forecast confidence is very low.
High pressure has a lot of influence early in the week, but it will be steadily slipping southeastwards. That allows milder air from the south to move northwards across the UK. However, low pressure systems approach the southwest and the weather turns progressively more unsettled.
The chart below is from the GFS model. It shows pressure and precipitation at 15:00, Thursday 20th March.
Low pressure is expected to be close to the UK early on. However as the week progresses, there are signs that high pressure will build from the southwest and bring more settled periods, at least to southern areas.
The chart below shows the GEFS forecast mean surface level pressure on Wednesday 26th March.
After a chilly start temperatures rise and it could feel quite warm for a time in southern and central areas. Later on the risk of showers or longer spells of rain starts to increase.
The Arpege temperature forecast chart is for 15:00 GMT, Wednesday 19th March.
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