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0F | 0C
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Tywydd 20 Diwrnod - Chelmsford

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1%

Siawns o Law

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12oC

Pwynt Gwlith

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80%

Lleithder

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108

Ozone

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0 mm

Gwlybaniaeth

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102800 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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40%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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0%

Siawns o Law

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13oC

Pwynt Gwlith

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78%

Lleithder

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96

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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28%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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5%

Siawns o Law

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14oC

Pwynt Gwlith

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81%

Lleithder

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101

Ozone

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0 mm

Gwlybaniaeth

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102600 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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75%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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3%

Siawns o Law

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14oC

Pwynt Gwlith

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78%

Lleithder

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90

Ozone

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0 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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10%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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4%

Siawns o Law

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8oC

Pwynt Gwlith

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66%

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 Gogledd Ddwyrain

Cyfeiriad y Gwynt

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45%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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5%

Siawns o Law

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8oC

Pwynt Gwlith

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70%

Lleithder

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90

Ozone

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0 mm

Gwlybaniaeth

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103200 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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10%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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18%

Siawns o Law

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7oC

Pwynt Gwlith

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68%

Lleithder

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107

Ozone

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0.73 mm

Gwlybaniaeth

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103200 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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73%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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5%

Siawns o Law

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6oC

Pwynt Gwlith

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70%

Lleithder

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104

Ozone

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0 mm

Gwlybaniaeth

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103400 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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21%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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9%

Siawns o Law

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5oC

Pwynt Gwlith

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67%

Lleithder

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109

Ozone

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0.13 mm

Gwlybaniaeth

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103400 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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33%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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2%

Siawns o Law

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4oC

Pwynt Gwlith

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68%

Lleithder

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95

Ozone

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0 mm

Gwlybaniaeth

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103300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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71%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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5%

Siawns o Law

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2oC

Pwynt Gwlith

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67%

Lleithder

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93

Ozone

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0 mm

Gwlybaniaeth

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103200 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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71%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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17%

Siawns o Law

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3oC

Pwynt Gwlith

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67%

Lleithder

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100

Ozone

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0.81 mm

Gwlybaniaeth

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102700 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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30%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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21%

Siawns o Law

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8oC

Pwynt Gwlith

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73%

Lleithder

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99

Ozone

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3.32 mm

Gwlybaniaeth

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102000 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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41%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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14%

Siawns o Law

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7oC

Pwynt Gwlith

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70%

Lleithder

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96

Ozone

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2.02 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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54%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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33%

Siawns o Law

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11oC

Pwynt Gwlith

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87%

Lleithder

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90

Ozone

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4.68 mm

Gwlybaniaeth

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101500 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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91%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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35%

Siawns o Law

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11oC

Pwynt Gwlith

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85%

Lleithder

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96

Ozone

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5.19 mm

Gwlybaniaeth

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101000 hPa

Pwysedd

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Gogledd Gogledd Ddwyrain

Cyfeiriad y Gwynt

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91%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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17%

Siawns o Law

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10oC

Pwynt Gwlith

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83%

Lleithder

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93

Ozone

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1.14 mm

Gwlybaniaeth

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101800 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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74%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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14%

Siawns o Law

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7oC

Pwynt Gwlith

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75%

Lleithder

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97

Ozone

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1.04 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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42%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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1%

Siawns o Law

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6oC

Pwynt Gwlith

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72%

Lleithder

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110

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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36%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

Dydd Mercher - 20
Dydd Iau - 21
Dydd Gwener - 22
Dydd Sadwrn - 23
Dydd Sul - 24
Dydd Llun - 25
Dydd Mawrth - 26
Dydd Mercher - 27
Dydd Iau - 28
Dydd Gwener - 29
light rain
scattered clouds
scattered clouds
broken clouds
sky is clear
scattered clouds
sky is clear
light rain
few clouds
light rain
Tymheredd Uchaf
Tymheredd Isafswm
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0.9 mm
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0 mm
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0 mm
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0 mm
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0 mm
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0 mm
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0 mm
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0.73 mm
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0 mm
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0.13 mm
Gwlybaniaeth
Siawns o Law

20/05/2026

17o
cloudy
Cymylog, cymylog
12oC / 18oC | teimlo fel 17oC
0% glaw | 0 mm
Lleithder 60%
Gweledigaeth 6.21 miles
Cyflymder y Gwynt 15.79 mph
Mynegai UV 5.02
Codiad Haul / Machlud Haul 04:58 AM / 08:50 PM
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