Average temperature in St Mellion
The mean minimum and maximum temperatures over the year in St Mellion (Cornwall), the United Kingdom.
- The months of July and August have nice average temperatures.
- On average, the warmest month is July with 20°C.
- On average, the coolest month is January with 10°C.
- The average annual maximum temperature is 15°C.
- The average annual minimum temperature is 8°C.
Forecast for St Mellion
broken clouds and rain
overcast and rain
broken clouds and slight rain