Use my current location crosshair
yellow Warnings have been issued for Glasfynydd (Usk Reservoir), Wales

Glasfynydd (Usk Reservoir)

Glasfynydd (Usk Reservoir) last 24 hours
  • 15°C 10°C
    Light rain
  • 16°C 12°C
    Cloudy
  • 18°C 10°C
    Sunny intervals
  • 19°C 11°C
    Sunny day
  • 16°C 12°C
    Light rain
  • 15°C 10°C
    Cloudy
  • 15°C 11°C
    Cloudy
Saturday   (22 July 2017)
1800 1900 2000 2100 2200 2300
Cloudy Cloudy Cloudy Cloudy Partly cloudy night Clear night
Temperature (°C)
13 13 13 12 12 11
Feels like temperature (°C) arrow down
13 13 13 12 12 11
Precipitation probability arrow down
10% 10% 10% 10% <5% <5%
Wind direction, speed & gust (mph) arrow down
ESE 3 5 E 2 3 NW 2 4 WNW 3 5 WSW 3 6 WSW 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
Humidity arrow down
81% 80% 80% 87% 90% 92%
UV index arrow down
2 1 1 1 0 0
Sunday   (23 July 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
Clear night Clear night Partly cloudy night Partly cloudy night Clear night Partly cloudy night Sunny intervals Light shower day Cloudy Cloudy Cloudy Cloudy Drizzle Cloudy Cloudy Light shower day Overcast Light shower day Cloudy Sunny intervals Cloudy Sunny intervals Partly cloudy night Cloudy
Temperature (°C)
11 10 10 10 10 10 10 11 12 13 13 14 14 14 15 15 15 15 15 15 14 13 13 12
Feels like temperature (°C) arrow down
10 10 10 9 9 9 9 10 11 12 12 12 13 13 13 13 13 13 13 13 13 12 11 11
Precipitation probability arrow down
<5% <5% <5% <5% <5% <5% <5% 30% 10% 10% 10% 10% 30% 10% 10% 30% 10% 30% 10% <5% 10% <5% <5% <5%
Wind direction, speed & gust (mph) arrow down
WSW 5 8 WSW 4 9 SW 5 9 WSW 5 9 WSW 5 9 SW 5 10 SW 6 10 SW 5 11 SW 6 13 WSW 7 13 WSW 8 14 WSW 9 16 W 8 15 W 8 16 W 9 16 W 9 16 WNW 9 17 WNW 9 16 WNW 9 16 NW 8 15 NW 8 14 NW 7 12 NW 6 12 WNW 6 12
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
VG G G G G G G G G G G G P G G G G G VG VG VG VG G G
Humidity arrow down
94% 94% 95% 97% 97% 95% 92% 92% 95% 94% 93% 91% 91% 89% 88% 85% 84% 83% 83% 83% 86% 91% 94% 95%
UV index arrow down
0 0 0 0 0 0 1 1 2 2 3 3 4 4 3 3 3 2 1 1 1 1 0 0
Monday   (24 July 2017)
0000 0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Cloudy Cloudy Cloudy Cloudy Sunny intervals Sunny intervals Sunny day Clear night
Temperature (°C)
12 12 13 13 16 18 18 17 13
Feels like temperature (°C) arrow down
11 11 11 12 14 16 16 16 12
Precipitation probability arrow down
<5% 20% 20% 10% <5% <5% <5% <5% <5%
Wind direction, speed & gust (mph) arrow down
WNW 6 12 WNW 6 13 NW 7 15 NNW 7 15 N 11 20 NNW 12 25 NNW 12 24 NW 9 18 NW 5 9
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G M M G VG VG VG VG VG
Humidity arrow down
96% 97% 97% 93% 79% 70% 70% 75% 91%
UV index arrow down
0 0 0 1 3 6 4 1 0
Tuesday   (25 July 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Clear night Partly cloudy night Sunny intervals Sunny day Sunny intervals Sunny day Sunny day Partly cloudy night
Temperature (°C)
11 11 12 16 18 18 16 13
Feels like temperature (°C) arrow down
11 10 12 15 17 17 16 13
Precipitation probability arrow down
<5% <5% <5% <5% <5% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
WNW 4 8 WNW 4 7 NW 4 7 WNW 5 13 WNW 7 18 WNW 8 18 WNW 7 14 WNW 4 6
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G G M VG VG VG VG VG
Humidity arrow down
97% 98% 96% 81% 69% 70% 77% 91%
UV index arrow down
0 0 1 4 7 4 1 0
Wednesday   (26 July 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Cloudy Drizzle Light rain Light shower day Light rain Light rain Light rain
Temperature (°C)
12 11 12 14 15 16 15 14
Feels like temperature (°C) arrow down
11 11 11 13 14 14 14 13
Precipitation probability arrow down
10% 20% 40% 60% 40% 50% 50% 50%
Wind direction, speed & gust (mph) arrow down
SW 4 7 SW 5 9 S 7 13 SSW 9 17 SSW 10 20 SW 11 22 SW 11 22 SW 9 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G M M G M G M G
Humidity arrow down
96% 96% 96% 90% 90% 90% 91% 95%
UV index arrow down
0 0 1 2 3 2 1 0
Thursday   (27 July 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Cloudy Cloudy Light rain Light rain Cloudy Cloudy Cloudy Cloudy
Temperature (°C)
13 12 12 13 14 15 14 12
Feels like temperature (°C) arrow down
12 11 10 11 12 12 12 10
Precipitation probability arrow down
20% 50% 50% 50% 20% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
WSW 9 17 W 9 18 W 10 19 W 12 23 W 13 26 W 14 27 W 12 23 W 9 18
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
M G G G G VG VG VG
Humidity arrow down
96% 95% 94% 86% 79% 74% 77% 87%
UV index arrow down
0 0 1 3 5 3 1 0
Friday   (28 July 2017)
0100 0400 0700 1000 1300 1600 1900 2200
Partly cloudy night Cloudy Cloudy Cloudy Cloudy Cloudy Sunny intervals Cloudy
Temperature (°C)
11 11 11 13 15 15 14 13
Feels like temperature (°C) arrow down
9 9 9 11 13 12 12 11
Precipitation probability arrow down
10% 10% 10% 10% 10% 10% 10% 10%
Wind direction, speed & gust (mph) arrow down
W 9 17 W 9 17 WSW 9 17 WSW 11 23 WSW 13 26 WSW 13 25 WSW 11 23 SW 10 19
Visibility (E = Excellent, VG = Very Good, G = Good, M = Moderate, P = Poor, VP = Very Poor) arrow down
G G G VG VG G VG G
Humidity arrow down
91% 93% 92% 83% 75% 78% 81% 90%
UV index arrow down
0 0 1 3 5 3 1 0
More Detail chevron down

Issued at: 1700 on Sat 22 Jul 2017

Forecast summary

Regional forecast for Wales

Scattered thundery showers.

This Evening and Tonight:

Scattered showers will continue to affect Wales this evening; some of these will be heavy and thundery with some localised flooding. Showers will ease later in the evening leading to clear spells overnight. Minimum Temperature 10 °C.

Sunday:

Scattered showers will develop through the late morning with some heavy, perhaps thundery downpours but also some good spells of sunshine; especially along western coasts. Maximum Temperature 20 °C.

Outlook for Monday to Wednesday:

Some more settled weather is expected through Monday and Tuesday with some good spells of sunshine and isolated showers. Rain will arrive from the west on Wednesday, turning more unsettled.

Updated at: 1537 on Sat 22 Jul 2017

UK forecast for the next 5 days

Heavy rain or showers for many.

This Evening and Tonight:

Scattered thundery showers will affect England and Wales, some of these heavy with some localised flooding. More prolonged heavy rain will also move through southern Scotland into Northern Scotland. The heaviest rain and showers will ease through the night.

Sunday:

Scattered showers will develop through the morning with some heavy, thundery downpours but also some good spells of sunshine. Remaining cloudier for eastern Scotland and northeast England with persistent rain.

Outlook for Monday to Wednesday:

Rain on Monday will slowly clear eastwards with some dry and fine weather developing, particularly in the west. Tuesday will be settled with isolated showers, before rain arrives on Wednesday.

Updated at: 1533 on Sat 22 Jul 2017

Outlook for the UK over the next 6-30 days

UK Outlook for Thursday 27 Jul 2017 to Saturday 5 Aug 2017:

Some rather unsettled weather looks set to affect the UK with often cloudy conditions with heavy rain moving across the country at times. A mixture of sunny spells and showers between the heavier spells of rain looks likely. Temperatures will be cooler generally, especially in any rain or showers but some warmer spells also. The unsettled or changeable theme looks likely to remain through the end of July, with north-western areas seeing the heaviest rain and showers and stronger winds. South-eastern areas are likely to be drier through the period, however a more prolonged spell of settled weather looks unlikely at this point. Signals in early August look very weak however there is increasing confidence for a continuation of changeable weather influenced by the Atlantic.

Updated at: 1308 on Sat 22 Jul 2017

UK Outlook for Sunday 6 Aug 2017 to Sunday 20 Aug 2017:

Despite rather mixed or weak signals for this period, the most likely scenario is for a changeable Atlantic driven airflow across the UK. This is likely to bring showers or longer spells of rain, and chance of strong winds at times. Southern and eastern areas are most likely to see periods of more settled weather. Temperatures may also recover to some extent through August, particularly in the south, to average or perhaps above.

Updated at: 1309 on Sat 22 Jul 2017