Cerrig Llwydion, Saturday, 8 August, 21:56
Overcast. Feels like 17°C. High 25°C, low 9°C.
Cerrig Llwydion, Sunday, 9 August
Partly cloudy. High 24°C, low 13°C.
Cerrig Llwydion, Monday, 10 August
Overcast. High 23°C, low 12°C.
Cerrig Llwydion, Tuesday, 11 August
Mainly clear. High 27°C, low 13°C.
Cerrig Llwydion, Wednesday, 12 August
Overcast. High 29°C, low 15°C.
Cerrig Llwydion, Thursday, 13 August
Partly cloudy. High 30°C, low 18°C.
Cerrig Llwydion, Friday, 14 August
Partly cloudy. High 22°C, low 16°C.
Cerrig Llwydion, Saturday, 15 August
Light rain. High 23°C, low 15°C.
Cerrig Llwydion, Sunday, 16 August
Light rain. High 21°C, low 15°C.
Cerrig Llwydion, Monday, 17 August
Light rain. High 18°C, low 14°C.
Cerrig Llwydion, Tuesday, 18 August
Partly cloudy. High 19°C, low 13°C.
Cerrig Llwydion, Wednesday, 19 August
Overcast. High 19°C, low 11°C.
Cerrig Llwydion, Thursday, 20 August
Light rain. High 18°C, low 11°C.
Cerrig Llwydion, Friday, 21 August
Partly cloudy. High 19°C, low 11°C.
Cerrig Llwydion, Saturday, 22 August
Light rain. High 20°C, low 13°C.
Cerrig Llwydion, Sunday, 23 August
Overcast. High 19°C, low 13°C.
The first 16 days come from weather models — highly reliable for the first 3–5 days, gradually less so after that. Days 17 to 30 for Cerrig Llwydion are built from climate averages over the last 60 years, so they show typical weather for those dates rather than a specific forecast.
We compare the forecast with the climate average for exactly the same calendar days, calculated from 60 years of observations. The difference shows how the coming month compares with a typical one.
These are real historical extremes recorded in Cerrig Llwydion since 1960: the highest and lowest temperature for each calendar date, with the year it happened.
The forecast portion refreshes every hour. The climate portion is based on long-term data and stays stable.