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| Su Jan 10 | Mo Jan 11 | Tu Jan 12 | We Jan 13 | |
| Tmin 18-06 |
5°C | 6°C | 7°C | 5°C |
| Tmax 06-18 |
8°C | 10°C | 8°C | 11°C |
| morning 24-06 |
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| a.m. 06-12 |
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| p.m. 12-18 |
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| evening 18-24 |
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| Nearby Forecast Locations - Caernarfon | Distance |
| Menai Bridge | 12.1 km |
| Raf Mona | 14.6 km |
| Porthmadog | 19.3 km |
| Holyhead | 22.0 km |
| Snowdonia | 22.6 km |
| Conwy | 33.4 km |
| Llyn Trawsfynydd | 34.2 km |
| Harlech | 38.4 km |
| Abersoch | 38.6 km |
| Gwynedd | 40.8 km |
| Llŷn Peninsula | 43.0 km |
| Barmouth | 48.6 km |
| Aberdaron | 50.0 km |
| Llyn Brenig | 50.4 km |
| Bala Lake | 51.7 km |
| Colwyn Bay | 52.0 km |
| Bala | 53.6 km |
| Machynlleth | 73.1 km |