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Updated: 1010 on Tue 1 Jul 2014
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Snowdonia: latest radar

Monday, 28 July 2014: dawn to dusk

Printable view Forecast issued: 1516 on Monday, 28 July 2014

Overview for Tuesday

Cloudy with some patchy rain through the middle of the day. Becoming drier and brighter later.

Hazards Risk Explanation
Blizzards No Risk  
Heavy snow No Risk  
Storm force winds No Risk  
Gales No Risk  
Severe chill effect No Risk  
Persistent and extensive hill fog Medium Cloud as low as 400m on passage of a weak front, bringing patchy rain.
Thunderstorms No Risk  
Heavy persistent rain No Risk  
Strong Sunlight Medium Sunny spells later with moderate to high UV levels.

key to hazards and forecast content

Weather summary and probability of precipitation for Tuesday
Dawn to 0900 0900 to 1200 1200 to 1500 1500 to dusk


Cloudy
Cloudy
Light rain
Light rain
0% 0% 20% 70%

Detailed mountain weather forecast: Snowdonia

Tuesday

Weather

Some isolated valley mist patches are possible through the early hours. It will become generally cloudy from dawn as a weak weather front approaches from the northwest. The front will bring patchy, mainly light, rain and clod bases as low as 400m at times through the middle of the day. It will tend to brighten up later in the day with some sunny spells possible. It will be cooler than of late in a moderate northwesterly breeze.

Visibility

Generally good, moderate in rain, poor in mist and very poor in hill fog.

Hill fog

Cloud bases as low as 400m at times, mainly through the middle of the day.

Maximum winds above 500m

Northwest 14-18mph.

Temperature

Valleys Plus 10 Celsius increasing plus 17 Celsius.
900 m Plus 9 Celsius increasing plus 11 Celsius.
Freezing level Above the summits.

Wednesday

Weather

A generally day and bright day, but turning cloudy at times. Cloud could be as low as 500m at times and possibly thick enough to produce the odd spot of drizzle on northwestern slopes. Winds remaing mainly moderate westerly. Temperatures about normal for the time of year, but feeling much cooler than of late.

Visibility

Generally good or very good, moderate or poor in drizzle, very poor in hill fog.

Hill fog

Cloud bases as low as 500m at times throughout the day.

Maximum winds above 500m

Westerly 15-20mph.

Temperature

Valleys Plus 12 Celsius increasing plus 18 Celsius.
900 m Plus 10 Celsius.
Freezing level Above the summits.

Outlook

Thursday

A generally dry day with sunny spells and isolated showers. It will feel warm, particularly in the afternoon sun. Winds remaining from the west.

Friday

A generally dry and bright start, but showers will develop through the day, these will be heavy and possibly thundery at times and more frequent than on Thursday. Gusty winds in the showers.

Saturday

Cloudy with patchy rain at first, bringing hill fog mainly to western slopes. Clearing through the morning to become mainly dry with sunny spells, but scattered showers possibly developing through the afternoon.

Observations

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Weather warnings for Wales

Weather forecast for Wales

The Enhanced Mountain forecast for Snowdonia has been discontinued. All forecast information for these locations can be found in the standard Mountain forecast above.

North East England West Midlands Grampian South West England Central, Tayside & Fife Northern Ireland North West England East of England Highlands & Eilean Siar Strathclyde Wales East Midlands SW Scotland, Lothian Borders London & South East England Yorkshire & Humber

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