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Snowdonia mountain area forecast

Forecast issued: 1607 on Monday, 1 September 2014

Overview for Tuesday

A largely fine day with sunny spells and light winds.

Hazards

No risk of Blizzards; Heavy snow; Storm force winds; Gales; Severe chill effect; Persistent extensive hill fog; Thunderstorms; Heavy persistent rain; Strong sunlight;

Weather summary and probability of precipitation for Tuesday

Dawn to 0900 0% chance of precipitation
0900 to 1200 0% chance of precipitation
1200 to 1500 Sunny intervals Sunny intervals 0% chance of precipitation
1500 to dusk Sunny Sunny 0% chance of precipitation

Detailed mountain weather forecast

Tuesday

Weather

Any early valley mist or fog patches should soon clear in the morning, then a largely fine day with bright or sunny spells and light winds. Feeling warm in the sunshine. Cloud will tend to increase as the day progresses, so the best of the sunshine will, be in the morning.

Visibility

Generally good, but very poor in hill fog.

Hill fog

Just occasional patches around the higher summits, especially into the afternoon.

Maximum winds above 500m

Northeast becoming southeast 15 mph.

Temperature

Valleys: Plus 9 Celsius becoming plus 18 Celsius.
900 m: Plus 10 Celsius.
Freezing level: Well above the summits.

Wednesday

Weather

Another largely dry and fine day, though probably cloudier than Tuesday, with only limited bright spells. The best of any sunshine will be towards the west of the park.

Visibility

Generally good, but very poor in hill fog.

Hill fog

Patches around the peaks.

Maximum winds above 500m

Southeast 15 mph.

Temperature

Valleys: Plus 11 Celsius becoming plus 18 Celsius.
900 m: Plus 10 Celsius.
Freezing level: Well above the summits.

Outlook

Thursday

Largely dry and fine with some bright or sunny spells. A gentle southeasterly breeze. Freezing level well above the summits.

Friday

A fairly cloudy day, the cloud perhaps thick enough for the odd spot of light rain or drizzle, mainly over high ground. A gentle easterly breeze. Freezing level well above the summits.

Saturday

Similar to Friday with large amounts of cloud, chance of a little drizzle, but also the odd brighter spell. A gentle northeasterly breeze. Freezing level well above the summits.


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