What's the lowest temp you've caught catfish at?

[Crispyweetabix]

Planning on going out this weekend after work and fishing for some channel cat. The predicted low for that day 30 F, and the high is 55 F. Not quite sure what the water temp will be.

A few of my IRL friends have said that it being cold should t have a hugely negative effect on my catching, but I wanted to get extra opinions.

[tubeN2]

I have caught catfish at 10 below zero outside temp. This was fishing through the Rhine River in Germany.
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[albinotrout]

It's possible to catch them through the ice as well.
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