With such extremes, there would be permanent drivers of weather. I think it could go different ways, though:
* Some planets would probably evolve a relatively stable set of weather systems in different places.
* Others would be prone to violent weather roaming all over the place.
This would likely depend on the type and amount of atmosphere along with the amount of heat received from the sun.
Less atmosphere and/or heat would mean less churn. More atmosphere would mean more church due to having more space to move around in, while more heat would drive the whole system with greater force. It would also depend on the amount of water (or other liquid) available. Less liquid, less churn; more liquid, more churn.
Another possible driver of erratic weather would be volcanic action. (On a dark side covered in ice, then ice volcanoes are yet another option.) If the planet has active tectonic plates, then volcanoes on the dark side could create a whole different ecosystem there, much as like the black smokers undersea have done here. You could actually have a first-contact scenario if a different sentient species arose on the cold side and the hot side.
And that's just with things we already know about. Eyeball planets might devise their own way of passing energy around, that we haven't seen here because Earth doesn't need it. But we do have analogs: consider certain systems for mass transfer of biological material from water to land (salmon runs) or land to water (herd animals drowning during migrations).
Well ...
* Some planets would probably evolve a relatively stable set of weather systems in different places.
* Others would be prone to violent weather roaming all over the place.
This would likely depend on the type and amount of atmosphere along with the amount of heat received from the sun.
Less atmosphere and/or heat would mean less churn. More atmosphere would mean more church due to having more space to move around in, while more heat would drive the whole system with greater force. It would also depend on the amount of water (or other liquid) available. Less liquid, less churn; more liquid, more churn.
Another possible driver of erratic weather would be volcanic action. (On a dark side covered in ice, then ice volcanoes are yet another option.) If the planet has active tectonic plates, then volcanoes on the dark side could create a whole different ecosystem there, much as like the black smokers undersea have done here. You could actually have a first-contact scenario if a different sentient species arose on the cold side and the hot side.
And that's just with things we already know about. Eyeball planets might devise their own way of passing energy around, that we haven't seen here because Earth doesn't need it. But we do have analogs: consider certain systems for mass transfer of biological material from water to land (salmon runs) or land to water (herd animals drowning during migrations).