Snowdonia National Park Forecast
Viewing Weather Forecast for Monday 10th December 2018
Also includes higher summits south to Plynlimon.
Forecast last updated on Sunday 9th December 2018 at 2:50pm
Summary for all mountain areas
A quiet day under a ridge of high pressure. Apart from rare brief showers in the west, most places will be dry all day. Areas of fog may linger on western hills. Patchy rain possible near western coasts late in the day. Winds generally light. Chilly; frosty Scotland & N England from dawn.
Headline for Snowdonia National Park
Wind becoming light. Often dry; banks of low cloud west.
How windy? (On the summits)
Northwesterly 20-25mph from dawn, backing westerly and easing toward 15mph afternoon.
Effect of wind on you?
Significant wind chill early morning, easing.
How Wet? (Precipitation and its impact)
Early showers fading
Isolated showers or patches of light rain from dawn, snow highest tops, tending to fade. By dusk onward, a little patchy rain will encroach from west.
Cloud on the hills?
May shroud higher western areas much of day; breaks inland.
Banks of cloud on the hills from dawn, may break above 700-800m for a time. Toward east & mid Wales likely to substantially clear. Patches may reform in west by dusk onward.
Chance of cloud free summits?
30% west; 70% east.
Sunshine?
Air clarity (below cloud)
A few glimpses of sun, mainly across eastern hills in morning, weakening as high cloud builds. Visibility mostly very good, reduced locally in showers.
How Cold? (at 900m)
1C lifting to 4C in afternoon.
Freezing Level
1000m, lifting above all tops.
Planning Outlook
All mountain areas of Britain from Tuesday 11th December 2018
Mostly cloudy and murky on Tuesday-Wednesday with patches of rain or drizzle. After midweek, a series of low pressure systems are expected to come in from the Atlantic, bringing bouts of gales and rain for all areas, and at times upland snow in the north as freeze-thaw cycles occur across the Scottish Highlands. Across England and Wales, temperatures on the hills occasionally below freezing.
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