What is the version of the following sentence with correct punctuation?

On Saturday we can expect sunny weather Morning temperatures will be around 23 C During the day they will reach a maximum of 38 C Low temperatures at night will be around 23C Westerly winds are weak
On Saturday we can expect sunny weather. Morning temperatures will be around 23 C. During the day they will reach a maximum of 38 C. Low temperatures at night will be around 23C. Westerly winds are weak.