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0F | 0C
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Tywydd 20 Diwrnod - Monmouthshire

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61%

Siawns o Law

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11oC

Pwynt Gwlith

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92%

Lleithder

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104

Ozone

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10.39 mm

Gwlybaniaeth

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100700 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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97%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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23%

Siawns o Law

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12oC

Pwynt Gwlith

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88%

Lleithder

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108

Ozone

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4.64 mm

Gwlybaniaeth

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102000 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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91%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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3%

Siawns o Law

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11oC

Pwynt Gwlith

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74%

Lleithder

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93

Ozone

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0 mm

Gwlybaniaeth

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102700 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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40%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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17%

Siawns o Law

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13oC

Pwynt Gwlith

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85%

Lleithder

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98

Ozone

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0.32 mm

Gwlybaniaeth

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102500 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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94%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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3%

Siawns o Law

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14oC

Pwynt Gwlith

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80%

Lleithder

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91

Ozone

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0 mm

Gwlybaniaeth

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102700 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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52%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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5%

Siawns o Law

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13oC

Pwynt Gwlith

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74%

Lleithder

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95

Ozone

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0 mm

Gwlybaniaeth

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102900 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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61%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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17%

Siawns o Law

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13oC

Pwynt Gwlith

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82%

Lleithder

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96

Ozone

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0.27 mm

Gwlybaniaeth

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102500 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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89%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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7%

Siawns o Law

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13oC

Pwynt Gwlith

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89%

Lleithder

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109

Ozone

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1.18 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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76%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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14%

Siawns o Law

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9oC

Pwynt Gwlith

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77%

Lleithder

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104

Ozone

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0.36 mm

Gwlybaniaeth

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102500 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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56%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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20%

Siawns o Law

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8oC

Pwynt Gwlith

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76%

Lleithder

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96

Ozone

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0.68 mm

Gwlybaniaeth

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102600 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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57%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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13%

Siawns o Law

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12oC

Pwynt Gwlith

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82%

Lleithder

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102

Ozone

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2.49 mm

Gwlybaniaeth

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102100 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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96%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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44%

Siawns o Law

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9oC

Pwynt Gwlith

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85%

Lleithder

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106

Ozone

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6.75 mm

Gwlybaniaeth

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101300 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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70%

Gorchudd Cwmwl

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05:05 AM

Codiad haul

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09:05 PM

Machlud

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6%

Siawns o Law

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8oC

Pwynt Gwlith

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78%

Lleithder

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101

Ozone

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1.22 mm

Gwlybaniaeth

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102100 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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95%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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45%

Siawns o Law

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8oC

Pwynt Gwlith

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89%

Lleithder

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109

Ozone

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6.1 mm

Gwlybaniaeth

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101900 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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84%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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34%

Siawns o Law

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5oC

Pwynt Gwlith

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73%

Lleithder

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91

Ozone

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5.48 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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94%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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95%

Siawns o Law

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9oC

Pwynt Gwlith

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95%

Lleithder

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94

Ozone

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20.92 mm

Gwlybaniaeth

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101300 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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99%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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40%

Siawns o Law

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11oC

Pwynt Gwlith

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94%

Lleithder

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101

Ozone

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7.24 mm

Gwlybaniaeth

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101600 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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97%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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46%

Siawns o Law

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11oC

Pwynt Gwlith

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91%

Lleithder

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100

Ozone

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7.63 mm

Gwlybaniaeth

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101400 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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80%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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84%

Siawns o Law

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13oC

Pwynt Gwlith

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90%

Lleithder

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107

Ozone

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12.18 mm

Gwlybaniaeth

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101300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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67%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

Dydd Llun - 18
Dydd Mawrth - 19
Dydd Mercher - 20
Dydd Iau - 21
Dydd Gwener - 22
Dydd Sadwrn - 23
Dydd Sul - 24
Dydd Llun - 25
Dydd Mawrth - 26
Dydd Mercher - 27
light rain
light rain
light rain
scattered clouds
light rain
broken clouds
broken clouds
light rain
light rain
light rain
Tymheredd Uchaf
Tymheredd Isafswm
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5.5 mm
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10.39 mm
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4.64 mm
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0 mm
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0.32 mm
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0 mm
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0 mm
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0.27 mm
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1.18 mm
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0.36 mm
Gwlybaniaeth
Siawns o Law

18/05/2026

11o
rain
Glaw cymedrol
8oC / 13oC | teimlo fel 10oC
100% glaw | 1.24 mm
Lleithder 88%
Gweledigaeth 6.21 miles
Cyflymder y Gwynt 7.87 mph
Mynegai UV 2.89
Codiad Haul / Machlud Haul 05:14 AM / 09:01 PM
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