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0F | 0C
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Tywydd 15 Diwrnod - East Hertfordshire

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5%

Siawns o Law

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11oC

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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43%

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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12oC

Pwynt Gwlith

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77%

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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39%

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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13oC

Pwynt Gwlith

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80%

Lleithder

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99

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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73%

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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13oC

Pwynt Gwlith

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77%

Lleithder

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108

Ozone

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0 mm

Gwlybaniaeth

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102200 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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8%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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08:05 PM

Machlud

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1%

Siawns o Law

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8oC

Pwynt Gwlith

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64%

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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27%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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4%

Siawns o Law

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8oC

Pwynt Gwlith

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69%

Lleithder

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97

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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09:05 PM

Machlud

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17%

Siawns o Law

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7oC

Pwynt Gwlith

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66%

Lleithder

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109

Ozone

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0.74 mm

Gwlybaniaeth

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103200 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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66%

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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110

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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19%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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7%

Siawns o Law

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4oC

Pwynt Gwlith

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67%

Lleithder

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92

Ozone

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0.19 mm

Gwlybaniaeth

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103400 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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37%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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3%

Siawns o Law

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3oC

Pwynt Gwlith

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68%

Lleithder

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101

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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74%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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0%

Siawns o Law

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2oC

Pwynt Gwlith

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66%

Lleithder

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99

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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60%

Gorchudd Cwmwl

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04:05 AM

Codiad haul

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09:05 PM

Machlud

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8%

Siawns o Law

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3oC

Pwynt Gwlith

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68%

Lleithder

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98

Ozone

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0.99 mm

Gwlybaniaeth

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102700 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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32%

Gorchudd Cwmwl

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04:06 AM

Codiad haul

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09:06 PM

Machlud

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23%

Siawns o Law

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8oC

Pwynt Gwlith

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73%

Lleithder

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92

Ozone

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3.28 mm

Gwlybaniaeth

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102000 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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14%

Siawns o Law

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7oC

Pwynt Gwlith

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69%

Lleithder

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96

Ozone

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2.19 mm

Gwlybaniaeth

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102300 hPa

Pwysedd

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Gogledd

Cyfeiriad y Gwynt

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58%

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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0.79 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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0.74 mm
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0 mm
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0.19 mm
Gwlybaniaeth
Siawns o Law

20/05/2026

18o
cloudy
Cymylau wedi torri
12oC / 18oC | teimlo fel 18oC
0% glaw | 0 mm
Lleithder 66%
Gweledigaeth 6.21 miles
Cyflymder y Gwynt 16.13 mph
Mynegai UV 1.21
Codiad Haul / Machlud Haul 04:59 AM / 08:53 PM
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