Yr Wyddfa / Snowdon Summit (Gwynedd) weather

Headline:

Heavy rain, gales and flooding possible overnight Monday into Tuesday.

This Evening and Tonight:

Turning drier this evening with clear spells and a few showers. Dry for a time overnight with clear spells but heavy showers arriving later in the night with hail, thunder and gusty winds possible, especially in the west. Staying mild. Minimum temperature 7 °C.

Monday:

Any heavy showers clearing quickly to leave a generally brighter day. Occasional showers are still possible, but most places staying dry. Turning cloudier later with winds easing. Another mild day. Maximum temperature 12 °C.

Outlook for Tuesday to Thursday:

Turning very wet and windy on Monday night with severe gales and flooding possible. Staying very windy on Tuesday with further rain, easing later. Brighter on Wednesday, further rain Thursday.

A continuation of a similar pattern to that seen through early December is anticipated, especially at first, as frontal systems from the Atlantic spread into and across the UK, interspersed with some temporary drier interludes. These will bring occasional spells of rain, which may be heavy at times leading to the risk of some impacts given how wet it has been lately. In addition, there may also be potential for some periods of strong winds at times too. Whilst it will often be mild, later in the period there may be a slight downward trend in temperature, especially across northern parts of the UK where there may also be a slightly higher chance of some wintry hazards at times.

Changeable conditions are expected across the UK during this period. Low pressure systems will probably dominate, meaning showers or longer spells of rain, heavy at times, for much of the UK and some hill snow in the north. Periods of strong wind are also possible, especially around coasts. Some drier, more settled spells are possible but how long these last is very uncertain. Temperatures will likely be close to average or slightly above overall.