Snowdonia National Park Forecast

The Snowdonia National Park.

Viewing Weather Forecast for Friday 19th September 2014

Today | Saturday | Sunday

Forecast last updated on Friday 19th September 2014 at 7:14am

Summary for all mountain areas

Low cloud will continue to shroud most eastern hills and mountains. Broadly dry for Scotland, although a little light rain and drizzle in the north-west. Heavy, locally thundery showers for Wales, possibly Peak District, lower risk Yorkshire & Cumbria. Light winds.

Headline for Snowdonia National Park

Heavy showers; risk lightning. Areas of cloud. Light wind.

How windy? (On the summits)

East or southeasterly 10 to 15mph, strongest in the morning.

Effect of wind on you?

Small

How Wet?

Threat heavy rain & lightning

Scattered heavy showers or possibly thunderstorms developing, mainly afternoon.

Cloud on the hills?

Patches

Early morning mist and patchy low cloud mostly clearing, although extensive eastern mountains most or all morning above 400 or 500m. Later on, cloud likely to reform above 600m in afternoon showers.

Chance of cloud free summits?

70%

Sunshine and air clarity?

Very little if any sunshine. Very hazy.

How Cold? (at 900m)

12 to 14C

Freezing Level

Above the summits

Planning Outlook

All mountain areas of Britain from Saturday 20th September 2014

Areas of rain will affect southern Scotland, northern England and also Wales on Saturday as a cold front moves slowly south. Behind this front, much clearer and cooler air will spread southwards across Highland Scotland, and will reach most or all of Wales on Sunday. Next week, starting fine across all mountain areas, but slowly as an area of high pressure sinks southwards, westerly winds, bringing fronts in off the Atlantic will begin to bring deteriorations into northern and western Scotland, and by the end of the week, probably to all mountain areas.

In association with
Mountaineering Council of Scotland sportscotland Association of Mountaineering Instructions