Five day forecast for Snowdon Summit

Fri 21st SepWeatherTemp.
(C)
Feels
like (C)
Rain
Prob. (%)
Vis.Hum.
(%)
Wind
Speed
(mph)
Wind
Gust
(mph)
Wind
Dir.
UV
Index
0000Heavy rain5-297Very poor1003447NW0
300Heavy rain3-695Very poor1004558W0
600Sleet1-874Very poor993845W0
900Sleet1-851Very poor994349WSW1
1200Sleet2-762Poor995160W2
1500Light rain shower3-444Very good934554WNW1
1800Light rain3-446Excellent883440WNW1
2100Cloudy3-411Excellent853138WNW0

Sat 22nd SepWeatherTemp.
(C)
Feels
like (C)
Rain
Prob. (%)
Vis.Hum.
(%)
Wind
Speed
(mph)
Wind
Gust
(mph)
Wind
Dir.
UV
Index
0000Cloudy2-45Excellent862936WNW0
300Partly cloudy2-42Excellent832531WNW0
600Cloudy2-33Excellent841825WSW0
900Cloudy3-38Excellent861620WSW1
1200Light rain3-152Very good871316SW2
1500Heavy rain3083Poor95913SE1
1800Heavy rain3-282Poor971620E1
2100Light rain4-256Moderate951825E0

Sun 23rd SepWeatherTemp.
(C)
Feels
like (C)
Rain
Prob. (%)
Vis.Hum.
(%)
Wind
Speed
(mph)
Wind
Gust
(mph)
Wind
Dir.
UV
Index
0000Light rain4-157Moderate942027E0
300Drizzle5058Very poor962229ESE0
600Light rain5064Poor972231ESE0
900Heavy rain6188Poor972745WSW1
1200Sleet3-369Poor953451NW2
1500Sleet shower2-557Moderate923456NNW1
1800Heavy rain shower2-460Good882945NNW1
2100Partly cloudy2-46Very good872236NNW0

Mon 24th SepWeatherTemp.
(C)
Feels
like (C)
Rain
Prob. (%)
Vis.Hum.
(%)
Wind
Speed
(mph)
Wind
Gust
(mph)
Wind
Dir.
UV
Index
0000Partly cloudy2-42Very good902029NW0
300Cloudy1-44Very good911827NW0
600Cloudy1-44Very good931620NW0
900Partly cloudy3-10Very good831322NW2
1200Cloudy413Very good721120NNW3
1500Partly cloudy411Very good73920NNW1
1800Sunny day301Very good89711NNW1
2100Clear night1-21Very good9579SE0

Tue 25th SepWeatherTemp.
(C)
Feels
like (C)
Rain
Prob. (%)
Vis.Hum.
(%)
Wind
Speed
(mph)
Wind
Gust
(mph)
Wind
Dir.
UV
Index
0000Clear night0-30Very good9579SE0
300Partly cloudy-1-41Good9579ESE0
600Partly cloudy-1-51Good95911ESE0
900Partly cloudy3-10Very good831118SE2
1200Sunny day511Very good691325S3
1500Partly cloudy621Very good691627SSW1
1800Sunny day4-11Very good831825SSW1
2100Clear night3-31Very good882027S0

Visibility - from the Met Office site



UV Index - from the Met Office site


The strength of the sun's ultraviolet (UV) radiation is expressed as a 'Solar UV Index', a system developed by the World Health Organization. These Met Office forecasts include the effects of:


The solar index does not exceed 8 in the UK (8 is rare; 7 may occur on exceptional days, mostly in the two weeks around the summer solstice). Indices of 9 and 10 are common in the Mediterranean area.


The UV Index can take the following values:
1-2 Low exposure. No protection required. You can safely stay outside
3-5 Moderate exposure. Seek shade during midday hours, cover up and wear sunscreen
6-7 High exposure. Seek shade during midday hours, cover up and wear sunscreen
8-10 Very high. Avoid being outside during midday hours. Shirt, sunscreen and hat are essential
11 or over Extreme. Avoid being outside during midday hours. Shirt, sunscreen and hat essential.

Weather forecasts courtesy of the Met Office.