Resources for further reading:
Wie ist das Wetter?
How's the weather?
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You can get a whole bunch of answers to this question, so be prepared
For example:
Es ist kalt.
It's cold.
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Es ist warm
It's warm.
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Es ist windig.
It's windy.
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Es ist stürmisch.
It's stormy.
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Es ist sonnig.
It's sunny.
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Es ist heiß.
It's hot.
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Es ist klar.
It's clear.
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Es ist bewölkt.
It's cloudy.
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Es ist schön
It's nice.
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Es ist frisch.
It's fresh.
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Es ist eisig.
It's icy.
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You can use the word “sehr“ very for all of the above sentences to emphasize the condition. For example
Es ist sehr heiß.
It's very hot.
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Es ist sehr kalt
It's very cold.
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Is it good or bad?
Here are some more general answers
Es ist gutes Wetter.
It's good weather.
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Es ist schlechtes Wetter.
It's bad weather.
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Es ist schreckliches Wetter.
It's terrible weather.
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Es ist wunderschönes Wetter.
It's beautiful weather.
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If you are planning to travel to Germany, Switzerland or Austria in the winter time, you definitely need to know the next two sentences. Let me assure you, there will be plenty of opportunities to use them.
Es regnet.
It's raining.
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Es schneit.
It's snowing.
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Bis bald!
Paul Weber: Rocket German