Most of us are looking forward to warm summer weather, but not everyone is happy about it.

Here’s why warm temperatures don't boost the mood for everyone.

After cataloging a billion tweets about weather, a doctoral student at Berkley found that when temperatures hit the 90's there was a drop in happiness -- similar to what the average worker feels between Sunday and Monday.

Of course this data isn't fool proof, there are other factors to consider like socioeconomic, age, and of course sarcasm.

But it does seem, according to the research, the temperature that most people are happiest at is 72.5 degrees.

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