What are the weather facts of all the planets?

Answer 1

The answer above me is right until you get to the gas giants, at least Saturn and Jupiter. They're actually hot down inside. The Gallileo mission sent a probe into Jupiter upon arrival. The probe recorded many atmospheres of pressure and temps of over 200 degrees centigrade before they lost contact with it, and it was still a very small fraction of the way in.

Both Jupiter and Saturn have been recorded as emitting more heat than they receive from the Sun. The weather forecast of "high winds" is very true for these planets though. ;)

Mars weather is beginning to be studied on an ongoing basis just like that on Earth - just not on nearly as vast a scale. Mars tends to freeze over in the winter and has a light frost of carbon dioxide and water ice crusting the surface. This all evaporates in the summer. The martian atmosphere is thin, but active. The Mars Exploration Rovers photographed dust devils moving around on the surface. The winds actually cleaned the dust off of the solar pannels, inproving their power output.

Titan is not a planet (it's Saturn's largest moon), but it has interesting weather as well. The atmosphere is very thick and composed mostly of methane and ethane. It rains liquid methane on Titan, and creates rivers of the stuff. It apparently dries up quickly, as the Huygens probe's landing site showed evidence of past liquids, but was dry at the time.

Answer 2

Mercury: Today: HOT. Damn Hot. Like, really hot.
Mercury: Tonight: Cold. Damn cold.
Venus: Today: Hotter than friggen' Mercury.
Venus: Tonight: Same.
Earth: California: beautiful. East coast: Cold. Sahara: Hot.
Mars: Cold. Damn cold
Jupiter: High winds. VERY high winds. And cold
Saturn: Same. But colder
Uranus: Same. Colder Still.
Neptune: Same. Colder Still.
Pluto - um... it's not a planet anymore.

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