What is the weather like today?
It is hot (cold).
It is raining (snowing).
Do you know the weather forecast for tomorrow?
It will be raining (snowing / windy / foggy / warm / sunny / hot).
Which month is the coldest (hottest) in your country?
Oh, what weather!
It's pretty warm (cold / freezing) today.
The weather is fine today.
What a lovely night (morning / day)!