No. Halley's Comet doesn't just "appear" for one night. It typically will be visible for a couple days to weeks.

Wikipedia says "The next predicted perihelion of Halley's Comet is July 28, 2061."
Source(s):
http://en.wikipedia.org/wiki/Comet_Halley

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Comet Halley is currently too faint to see through any telescope, since it's further from the sun than Neptune. However, given a large enough telescope and a long enough exposure time, the comet can be imaged at any point in its orbit, so in a sense it can be "seen" whenever it's in the nighttime sky:

http://www.eso.org/public/outreach/press-rel/pr-2003/phot-27-03.html

Halley's next passage through the inner solar system occurs in 2061, 52 years from now. See my previous Best Answer to a similar question for more information:

http://www.mahalo.com/answers/science-and-mathematics/does-anybody-know-whens-the-next-haleys-comet
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The previous answers already dealt with where Halley is and why you can't see it right now. But you asked "*IS* Halley's comet tonight?"

Technically, comet Halley exists every night, and every day. It's out there whether you can see it or not. It travels far out beyond the large planets in our solar system, then sweeps back in nearing the sun, and repeats every 75.3 Earth years. So *IS* the comet tonight? Sure it is! It's tonight, it's today, it's tomorrow, it's every day! It's out there! Can you SEE it in tonight's sky? No; not with any instrument you have available on Earth at the moment. But maybe in 2061! (Bring a good book and a sandwich if you're going to wait up for it tonight, okay?)
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