This forecast is updated at 7am, 1pm and 7pm

Issued by Weather Consultancy Services on:
Monday 23 September 2019 03:00 hrs
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UK & Ireland Weather Summary for Monday
Low pressure is centred to the west and northwest of the British Isles on Monday. Just after midday, a pair of occluded fronts lie to the west and southwest of Ireland. A further occluded front extends from northwest Scotland to the east of England. A cold front extends from just south of Iceland to the northeast of Scotland then across the North Sea to Denmark. These fronts slowly edge eastward through the afternoon.

Forecast for astronomy in London for the next 5-days
Data based on GFS model updated: Mon 23 September 2019 03:00
Time SFC Wind Rain * Total cloud Low cloud Med cloud High cloud Temp Sfc RH Pressure Seeing Clarity
6am MondaySW 4g20mph0mm27%27%0%0%14C82%1010mb14
9am MondayS 5g17mph0mm35%35%0%0%17C60%1012mb34
Midday MondayS 7g17mph0.1mm57%25%0%0%20C52%1012mb43
3pm MondayS 9g21mph0.2mm95%46%60%60%19C58%1011mb41
6pm MondayS 8g20mph0.8mm97%56%69%69%17C75%1010mb40
9pm MondayS 6g27mph0.6mm100%100%88%88%16C83%1010mb30
00:01am TuesdayS 5g22mph1.1mm99%99%44%44%17C86%1009mb20
6am TuesdayS 5g25mph1mm100%100%51%51%17C85%1004mb20
Midday TuesdaySW 5g20mph10.4mm100%91%100%100%18C70%1001mb30
6pm TuesdaySW 5g19mph3.8mm37%21%13%13%17C64%1002mb24
00:01am WednesdayS 6g22mph0.1mm97%42%92%92%15C73%1002mb20
Midday WednesdayW 9g25mph4.3mm100%100%86%86%16C82%1002mb40
Midday ThursdayW 10g22mph3.7mm100%89%94%94%18C80%1006mb40
00:00am FridaySW 8g24mph0.2mm30%30%0%0%14C71%1009mb34
Midday FridayW 12g24mph0.4mm21%21%0%0%19C51%1008mb45
00:00am SaturdayW 10g29mph0.1mm53%53%0%0%14C70%1008mb33
Midday SaturdayW 10g24mph0.6mm78%78%0%0%18C51%1010mb41
[* rainfall is previous 6-hours. Gusts are over open ground.]

Planning outlook:
Tuesday low pressure and a cold front will move south across England and Wales with high pressure north west of Scotland. A colder day as rain and snow spreads south. Mainly dry in the channel with sunny spells. Visibilities will be good in the channel but moderate to poor elsewhere in rain and snow.
Wednesday a cell of high pressure is centered west of Ireland and will be ridging east. A cold, windy day with sunny spells and scattered showers of rain and snow. Visibilities will be good but moderate in rain showers, poor in snow showers.
Thursday sees high pressure centred south of Ireland and this will give much of the country a dry, settled, day with sunny spells. Visibilities will be good.
Friday a cold front spreads rain down across Scotland, the Irish Sea and northern England. Fair and dry in the south and in the channel with varying cloud and sunny spells. Visibilities will be good in the south and in the channel, but falling to moderate or locally poor as the rain sets in across the north.
Saturday high pressure to the west of Britain is ridging into Scotland with a front into the far north west. Most areas will be fair and dry with sunny spells today after some patchy mist clears. Visibilities will be good but moderate at first.
Sunday a front moves south east across Britain. Outbreaks of rain will clear western areas in the afternoon. Visibilities will be moderate improving to good as the front clears.

Synoptic charts based on data from 0001 GMT, Sunday 22 September 2019 (Updated daily by 9am)
Tomorrow (Day 2)

Day after tomorrow (Day 3)

This forecast is for planning purposes only.
Forecast is copyright Weather Consultancy Services.