Cwm Penmachno, Saturday, 8 August, 18:28
Overcast. Feels like 21°C. High 22°C, low 8°C.
Cwm Penmachno, Sunday, 9 August
Overcast. High 20°C, low 9°C.
Cwm Penmachno, Monday, 10 August
Light rain. High 18°C, low 8°C.
Cwm Penmachno, Tuesday, 11 August
Clear sky. High 24°C, low 8°C.
Cwm Penmachno, Wednesday, 12 August
Overcast. High 27°C, low 13°C.
Cwm Penmachno, Thursday, 13 August
Clear sky. High 25°C, low 15°C.
Cwm Penmachno, Friday, 14 August
Light rain. High 21°C, low 13°C.
Cwm Penmachno, Saturday, 15 August
Overcast. High 19°C, low 10°C.
Cwm Penmachno, Sunday, 16 August
Overcast. High 18°C, low 11°C.
Cwm Penmachno, Monday, 17 August
Light rain. High 15°C, low 9°C.
Cwm Penmachno, Tuesday, 18 August
Light rain. High 14°C, low 8°C.
Cwm Penmachno, Wednesday, 19 August
Light rain. High 17°C, low 9°C.
Cwm Penmachno, Thursday, 20 August
Light rain. High 16°C, low 10°C.
Cwm Penmachno, Friday, 21 August
Light rain. High 14°C, low 9°C.
Cwm Penmachno, Saturday, 22 August
Light rain. High 13°C, low 10°C.
Cwm Penmachno, Sunday, 23 August
Light rain. High 13°C, low 8°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 Cwm Penmachno 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 Cwm Penmachno 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.