[heja2009]

Since it is tidally locked around a low mass star, axial tilt should be near 0 and seasons should not exist [1]. Tidally locked also means much higher temperature than the estimated average (231K or -42C for the hotter one) on the sunny side and much lower ones on the dark side.

[1] https://en.wikipedia.org/wiki/Axial_tilt#Extrasolar_planets

[jjk166]

There are other ways for a planet to become tidally locked, for example Mercury is in a 3:2 resonance with the Sun. And if there is an atmosphere or a sufficiently deep ocean then even for a 1:1 tidally locked planet the temperature gradient from the light to dark side won't be too extreme.