My current Project requirement is to check member stresses due to temperature variation between winter season (-25 Deg C) to summer season (+40 Deg C). However, we cannot simulate this load in SACS.

However, STAAD Pro can simulate the Stresses due to Temp change for axial elongation.

similar feature to Simulate Temperature variation over time shall be added in SACS.

This will help all users wherein their project sites experience temperature variance.