Learn Swedish: Idag är vädret mulet. - Today the weather is cloudy.

The dictionary form of "cloudy" is mulen. When describing a neuter noun like ett väder (weather), we normally add a -t. However, for adjectives ending in an unstressed -en, we drop the -n entirely before adding the -t. That is why it becomes mulet and not "mulent".

Why is the verb är before the subject vädret?

This is the Swedish V2 (verb-second) rule in action. Because the sentence starts with the time word idag (today), the verb är must take the second position in the sentence. This pushes the subject vädret (the weather) to the third position.

Does the adjective have to match the noun even when it comes directly after the verb?

Yes! Adjectives in Swedish must always agree with the noun's gender and number, even in the predicative position (when they come after verbs like "is" or "becomes"). Since väder is a neuter noun, the adjective must take the neuter form mulet.

Can I use mulen or mulet to say someone is in a cloudy or gloomy mood?

No, mulen is specifically used for the sky and weather. If you want to describe a person's mood as gloomy, sad, or down, you would use words like dyster or nedstämd instead.