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It doesnt.

it reads humidity

we train a person in some branch of metaphysics who reads the hygrometer and looks at past days, weeks, months, even years

he then predicts the weather

this branch of metaphysics is called meteorology

http://wiki.answers.com/FAQ/2318

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Wiki User

13y ago
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Wiki User

11y ago

it show how much humidity present in the current atmosphere which help for further calculation

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Emmanuelle Hazan

Lvl 2
2y ago

it figurs out the density of your juicy nuts

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Q: How does a hygrometer help forecast weather?
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