1
She seems that she is tired.
She seems tired.
It seems that she is tired.
Use seem + adjective to say how someone or something appears: ‘He seems happy.’
Before that + sentence, use it seems: ‘It seems that he is happy.’
2
She is seeming tired today.
She seems tired today.
Seem is normally a stative verb, so we do not normally use it in continuous tenses.