As was mentioned in another thread on another post on this topic:
Given an earth-like atmosphere, the wind at the terminator would be a fairly constant 20mph from the sunward side to the shadowed side. Elsewhere, it would be slower. The upper atmosphere would circulate much faster than the rotational period of the planet, spreading the heat out pretty evenly over the planet.
Given an earth atmosphere, and the same heat from the sun as the earth, it would be about 25F on the shadow side pole, and 135F on the light side pole.
Of course, tectonics on a tidally locked planet are another thing, and if its surface has fused its atmosphere is probably chock full of H2SO4.
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As was mentioned in another thread on another post on this topic:
Given an earth-like atmosphere, the wind at the terminator would be a fairly constant 20mph from the sunward side to the shadowed side. Elsewhere, it would be slower. The upper atmosphere would circulate much faster than the rotational period of the planet, spreading the heat out pretty evenly over the planet.
Given an earth atmosphere, and the same heat from the sun as the earth, it would be about 25F on the shadow side pole, and 135F on the light side pole.
Of course, tectonics on a tidally locked planet are another thing, and if its surface has fused its atmosphere is probably chock full of H2SO4.