We get solid precipitation here on earth all the time.
Sometimes it's hail, sometimes sleet.
The best is frogs, though.
While the parent's post is in jest I did want to point out that it probably does not actually rain frogs or fish. It's popularly proposed that waterspouts serve as the mechanism by which frogs and fish plummet to the earth. It turns out however, that this really isn't a plausible explanation.
Waterspouts come in two basic varieties. One type is a local phenomenon similar to a dust devil on land. Such a waterspout only marginally affects a body of water's surface. The second type is a supercell tornadic waterspout. Inside such a waterspout the decreased air pressure can cause water to rise by about as much as half a meter, but no water is actually sucked up inside. The visible column of the waterspout is composed primarily of condensation. Sometimes the waterspout will pick up spray from wavelets and hurl it outward, but that's about it. There is really no mechanism for which a waterspout can transport a large column of water high into the air.
In tornadoes objects often hurl things upward and out, but how often does a tornado preserve the spatial location of a group of objects? Moreover, in most reports involving raining frogs there is rarely if ever any mention of a nearby waterspout.
Now, every spring and fall many frogs migrate from breeding ponds to deeper waters such as lakes. Since they are amphibians, a prime time to migrate is
shortly after a rainstorm when everything is moist. If a day has the right conditions, you can see swarms of frogs migrating across terrain that normally sees
little frog action. Let's say you look out your
window during a rain storm and see thousands of frogs jumping around. It's not a far stretch to imagine that they might be falling from the sky and bouncing around.
Of course, if the frogs were really falling from the sky they would probably be completely smashed. Reports of frog rain rarely involve thousands of squished frogs.
All it takes to create a frog rain story is a healthy imagination and exaggerated second and third hand reports.
Fish are a slightly different matter, but not really. There are actually many species of fish which walk on land for one reason or another. In 2008
there was a report that 30 catfish emerged from a sewer after a heavy rain storm in Florida and had a merry time in the streets. Some fish even have special
organs which allow them to get oxygen from air. The climbing perches of Africa and Asia are such a group. They walk using their gills, fins, and tail. If
you actually saw one, however, you wouldn't think it really capable of wandering around on land. Such is the case with many walking fish. The lay person
sees such a fish and automatically assumes it could not have gotten to its current dry location by its own means.
Finally, as far as we know no one has actually ever observed fish and frogs falling from the sky. What probably happens is that people see masses of frogs
or fish on land and assume they fell from the sky and then tell reporters that indeed they saw the fish and frogs raining from the skies. As you can now see,
though, there is a much more mundane and likely explanation.