morning temperatures will be around 6 °c. during the day they will reach a maximum of 10 °c. low temperatures at night will be around 5°c. northerly winds are weak.

How would the previous sentence be correctly capitalized?
Morning temperatures will be around 6 °C. During the day they will reach a maximum of 10 °C. Low temperatures at night will be around 5°C. Northerly winds are weak.