How come we can we have an idea of how cold or warm it “looks” outside?

Question

How come we can we have an idea of how cold or warm it “looks” outside?

In: 1

Answer 1

basically, we are using past experience as a guide. We are comparing the visual evidence we have with our knowledge of what it was like last time it looked like that. So, strong shadows and bright colours imply lots of sunlight and thus warmth, while muted shadows, a pale and faded colour spectrum, etc all point to cloud cover, less sun and a “cooler” weather system.

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also, the climate indoors is still affected by the outside temperature, despite climate control. so we have additional clues form our internal environment (for example the AC being on, or condensation on the windows)