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      12-31-2017, 02:03 PM   #12
Billfitz
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That's why you can't rely on relative humidity alone to determine how much moisture is in the air. The old saying 'It's not the heat, it's the humidity' is more accurately expressed 'It's not the heat, it's the dew point'. Outside my door right now the temperature is 4F, the humidity 52%, but there's no frost forming, as the dew point is -10F.
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