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Glasfynydd (Usk Reservoir)

Glasfynydd (Usk Reservoir) last 24 hours
  • 7°C 0°C
    Light shower day
  • 8°C 0°C
    Sunny intervals
  • 8°C 4°C
    Light rain
  • 10°C 2°C
    Cloudy
  • 10°C 4°C
    Cloudy
  • 11°C 4°C
    Cloudy
  • 11°C 5°C
    Light rain
Tuesday   (25 April 2017)
1700 1800 1900 2000 2100 2200 2300
Heavy shower day Light shower day Sunny intervals Sunny intervals Light shower night Clear night Clear night
Temperature (°C)
5 5 5 3 3 2 2
Feels like temperature (°C) arrow down
2 1 1 0 0 -1 -2
Precipitation probability arrow down
60% 40% 10% 10% 30% <5% <5%
Wind direction, speed & gust (mph) arrow down
NNW 10 23 NNW 13 24 N 12 23 N 8 17 NNE 9 19 NNE 7 16 NNE 8 16
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
M VG E E E E E
Humidity arrow down
63% 65% 68% 76% 75% 86% 88%
UV index arrow down
2 2 1 1 0 0 0
Wednesday   (26 April 2017)
0000 0100 0200 0300 0400 0500 0600 0700 0800 0900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300
Partly cloudy night Partly cloudy night Clear night Clear night Clear night Clear night Clear night Sunny day Sunny day Sunny intervals Sunny day Sunny intervals Sunny day Sunny intervals Sunny intervals Sunny intervals Sunny intervals Cloudy Sunny intervals Sunny intervals Sunny day Clear night Clear night Clear night
Temperature (°C)
2 1 1 1 0 0 0 0 1 3 4 5 6 7 7 7 7 7 6 6 4 3 2 1
Feels like temperature (°C) arrow down
-1 -2 -2 -3 -3 -3 -3 -2 -2 -1 0 1 3 4 4 4 3 3 3 2 1 0 0 -1
Precipitation probability arrow down
<5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% <5% 10% <5% 10% 10% <5% <5% <5% <5% <5% <5%
Wind direction, speed & gust (mph) arrow down
NNE 7 15 NNE 7 16 NNE 7 16 NNE 6 16 NNE 6 15 NNE 6 14 NNE 6 13 NNE 5 14 N 6 13 NNE 9 16 NNE 11 19 NNE 10 19 NNE 10 18 N 9 17 N 10 18 NNW 10 19 NNW 11 19 NNW 11 19 NNW 11 21 NNW 11 20 NNW 8 17 NNW 6 15 N 4 11 NNE 4 11
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
E E E E E E E E E E E E E E E E E E E E E E E E
Humidity arrow down
87% 88% 88% 87% 87% 87% 87% 85% 78% 71% 61% 56% 49% 47% 46% 45% 49% 48% 50% 51% 56% 63% 71% 73%
UV index arrow down
0 0 0 0 0 0 0 1 2 3 3 4 5 6 5 4 3 2 1 1 1 0 0 0
Thursday   (27 April 2017)
0000 0100 0400 0700 1000 1300 1600 1900 2200
Clear night Clear night Partly cloudy night Cloudy Drizzle Heavy rain Overcast Overcast Cloudy
Temperature (°C)
1 1 1 2 4 7 7 7 5
Feels like temperature (°C) arrow down
-1 -1 -1 0 2 4 4 3 2
Precipitation probability arrow down
<5% <5% 10% 50% 60% 80% 40% 20% 10%
Wind direction, speed & gust (mph) arrow down
NNE 4 9 N 3 7 WSW 4 7 WSW 5 11 W 7 13 NW 9 18 NW 12 23 NW 11 21 NW 8 15
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
E E E VG P G VG VG VG
Humidity arrow down
74% 79% 80% 85% 90% 87% 86% 87% 92%
UV index arrow down
0 0 0 1 2 3 2 1 0
Friday   (28 April 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Clear night
Temperature (°C)
4 4 5 7 9 9 8 5
Feels like temperature (°C) arrow down
2 1 2 5 7 7 6 3
Precipitation probability arrow down
10% 10% 10% 10% <5% 10% 10% <5%
Wind direction, speed & gust (mph) arrow down
NW 7 14 NW 7 12 NW 6 12 NNW 8 18 NNW 8 18 NNW 8 18 NNW 7 15 NNW 4 7
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG VG VG VG VG VG VG VG
Humidity arrow down
95% 96% 94% 81% 71% 69% 73% 87%
UV index arrow down
0 0 1 2 4 2 1 0
Saturday   (29 April 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Partly cloudy night Partly cloudy night Sunny intervals Cloudy Cloudy Cloudy Cloudy Cloudy
Temperature (°C)
4 2 4 7 9 10 9 6
Feels like temperature (°C) arrow down
2 1 2 5 7 7 6 4
Precipitation probability arrow down
10% 10% <5% <5% 10% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
NE 3 5 ESE 4 6 ESE 4 8 SSE 7 16 SSE 9 21 SSE 10 22 SE 10 20 SE 10 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG G VG VG VG VG VG VG
Humidity arrow down
91% 93% 90% 71% 63% 62% 67% 79%
UV index arrow down
0 0 1 3 5 2 1 0
Sunday   (30 April 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Cloudy Partly cloudy night
Temperature (°C)
5 5 5 7 9 10 9 7
Feels like temperature (°C) arrow down
2 1 0 4 6 6 6 3
Precipitation probability arrow down
10% 10% 10% 10% 10% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
ESE 11 21 ESE 12 23 ESE 14 27 ESE 17 34 SE 19 38 SE 18 36 SE 16 30 SE 15 28
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG VG VG VG G G VG G
Humidity arrow down
82% 85% 84% 73% 65% 64% 69% 79%
UV index arrow down
0 0 1 3 4 2 1 0
Monday   (01 May 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Partly cloudy night Light rain Light rain Light rain Light rain Light rain Partly cloudy night
Temperature (°C)
6 5 5 7 9 10 9 7
Feels like temperature (°C) arrow down
2 1 1 4 6 7 6 4
Precipitation probability arrow down
20% 10% 50% 50% 50% 50% 50% 20%
Wind direction, speed & gust (mph) arrow down
SE 14 26 SE 13 24 E 13 24 SE 15 29 SSE 16 32 ESE 15 31 SSE 14 27 S 12 23
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G G G G G G G G
Humidity arrow down
86% 89% 90% 82% 75% 73% 78% 86%
UV index arrow down
0 0 1 2 4 2 1 0
More Detail chevron down

Issued at: 1600 on Tue 25 Apr 2017

Forecast summary

Regional forecast for Wales

Staying cold but showers dying out.

This Evening and Tonight:

Still some showers around this evening but it will become drier with just an occasional shower across exposed west coasts of Wales after midnight. A cold and frosty night, with the odd icy stretch developing. Minimum Temperature -3 °C.

Wednesday:

A cold, mostly dry start, then plenty of sunshine lasting throughout the daytime. The odd shower is possible in the afternoon. Lighter winds too but still feeling cold. Maximum Temperature 11 °C.

Outlook for Thursday to Saturday:

Cloudy on Thursday with outbreaks of rain on and off. Drier and brighter on Friday and Saturday with more sunshine, the odd shower and temperatures returning to nearer normal.

Updated at: 1607 on Tue 25 Apr 2017

UK forecast for the next 5 days

Staying cold tonight and Wednesday, with showers dying out.

This Evening and Tonight:

Windy with further showers, some still giving hail, sleet and snow, across central and eastern parts. Showers dying out elsewhere, becoming confined to western and northern coasts. A cold night with widespread frost for inland areas.

Wednesday:

Showers gradually becoming confined to eastern and then south-eastern parts of the UK, leaving many places dry. Clouding over across the north-west of the UK with rain later. Feeling cold.

Outlook for Thursday to Saturday:

Outbreaks of rain will move south-eastwards across the UK during Thursday. Mainly dry thereafter with some sunshine and temperatures slowly returning to nearer normal. Overnight frosts becoming less widespread too.

Updated at: 1603 on Tue 25 Apr 2017

Outlook for the UK over the next 6-30 days

UK Outlook for Sunday 30 Apr 2017 to Tuesday 9 May 2017:

The tail end of the Bank Holiday weekend looks more unsettled, with rain, already across some west and south-western parts of the UK, extending across the rest of the country. Rain could be heavy across south-western areas, and it will be increasingly windy for many. However, some north-eastern areas could stay dry throughout the long weekend, and temperatures will generally be near or slightly below normal. Tuesday will remain on the wet and windy side, but as next week progresses, drier, more settled and increasingly sunny weather should become established. South-east England is expected to see this change first. Temperatures are likely to respond too with some places becoming very warm, but the main uncertainty is just how quickly this change occurs.

Updated at: 1320 on Tue 25 Apr 2017

UK Outlook for Wednesday 10 May 2017 to Wednesday 24 May 2017:

High pressure appears to be in charge during the middle part of May, with temperatures likely to be above average, possible very warm at times. It also looks drier than average, especially across the north-west of the UK, with central and southern Britain perhaps seeing some wetter weather occasionally. Towards the end of May, indications on a particular weather type are less certain, with temperatures likely to be closer to normal; some pleasantly warm days but some chilly nights. Rainfall also looks to become nearer average too.

Updated at: 1321 on Tue 25 Apr 2017