What is the weather like today?
'Tempo' = TEM-po — two syllables, stress on the first. Note: 'tempo' means both 'weather' and 'time' — context distinguishes them.
The universal small-talk opener in any culture. Use with anyone in any setting — at work, with neighbours, waiting for something. In Italy, weather-based small talk is an art form.
'Fare il tempo' is the idiomatic Italian expression for weather — literally 'to do the weather.' 'Che tempo fa?' = 'What weather does it make?' This is an impersonal construction — 'fa' is third person singular with implicit impersonal subject.
Che brutto/bel tempo!
What awful/beautiful weather!
Exclamatory — expresses an opinion rather than asking a question.
Sembra che piova più tardi.
It seems like it'll rain later.
'Sembrare che + subjunctive' — B1 structure, very natural in weather predictions.
Fa più freddo del solito, no?
It's colder than usual, isn't it?
'No?' at the end is the Italian tag question — invites agreement and continues conversation.
Despite being associated with constant sunshine, Italy has widely varied weather. Northern Italy can be cold and rainy like central Europe. Complaining about the weather ('che schifo questo tempo') is a universal Italian bonding ritual.