Hello there,
The answer to your question is yes. Some people don't necessarily have a fever. Many people will get a low grade fever and a higher fever is only experienced at times of a very severe flare.
I generally have a low body temperature and although I have had low grade fever on and off for years, I didn't realise I did. For me a "fever" was higher than that and therefore I didn't have one!
I don't know your history. Are you seeing a rheumatologist or not? You would be most unlikely to get a definitive lupus diagnosis without seeing a rheumy as it is a very complex disease that is difficult to diagnose. Many of its symptoms can be found in other diseases too.
I hope that helps answer your question,
Katharine