Traditional Culture Encyclopedia - Weather forecast - The weather forecast says it will be colder tomorrow.

The weather forecast says it will be colder tomorrow.

The weather forecast says it will be colder tomorrow, with punctuation marks in the middle. No, the weather forecast says it will be colder tomorrow. You can add a comma after the weather forecast, because adding or not all means expressing the weather forecast, that is, the monitoring by the Meteorological Bureau, and then the meaning expressed through the weather forecast is the same.