Snowdonia National Park Forecast
Also includes higher summits south to Plynlimon.
Viewing Weather Forecast for Tuesday 21st February 2017
Forecast last updated on Monday 20th February 2017 at 12:46pm
How windy? (On the summits)
Westerly typically 35mph morning. Increasing afternoon, reaching 40 mid-afternoon, and 45 or 50mph Snowdon range, toward dusk.
Effect of wind on you?
Walking increasingly difficult on higher areas. Significant wind chill.
Rain most of day; patchy eastern summits
Rain on and off most of daylight. However on western mountains, for several hours the rain rarely ceasing and heavy.
Cloud on the hills?
Blanket cloud across the hills
Cloud from lower slopes up, although on eastern hills, cloud rare below 500m.
Chance of cloud free summits?
Almost nil west to 20% easternmost summits
Sunshine and air clarity?
Sunshine not expected. Visibility often reduced by rain and fog enveloping the hills.
How Cold? (at 900m)
2C rising in afternoon to 5C. Will feel as cold as minus 10 Celsius directly in the wind.
Above the summits.
All mountain areas of Britain from Wednesday 22nd February 2017
Rapid changes in the weather this week as a series of lows and their fronts cross Britain. Rainfall, a mix of rain and snow on higher areas, will be considerable on many western mountains and upland gales, occasionally storm force winds will be frequent. There will be freeze thaw cycles, but in England and Wales periods of freeze fairly brief and limited to higher tops.