Why Does It Get Colder On Clear Nights?

Tools

By By Steve Pool

SEATTLE - It seems odd, but it usually gets colder at night from warm sunny days than cool, cloudy days.

That's because clouds can act like a blanket. The clouds can keep a good chunk of sunlight out during the day, keeping us cooler in the afternoons. But the clouds will also trap in whatever warmth we get during the day, keeping us warmer at night.

Thus, after a sunny and warm day where we might get to 55 during the day, a clear night will allow that heat to be radiated out back into space, dropping temperatures near freezing. While a cloudy and 45 degree day might only get down to the upper 30s at night.

Your Photos

YouNews Monday Morning Sunrise Monday Morning Sunrise
These images of the sunrise with Mt. Rainier were taken around 8am Monday November 24th. The pictures were taken with a Nikon D3000 DSLR with a 50-200mm telephoto lens.
YouNews Is it really Nov.? Is it really Nov.?
Isn't Nov. supposed to be our nastiest weather month? Seems OK to me...