I am working as a temp to hire (I have an employer but work for someone else). I was given a salary range by the temp agency of what my salary would be when I was hired the company whose work I do.

Recently I spoke with local management, who gave me a different range that overlapped only slightly with the first range and is approximately 15% lower. They informally offered a wage at the very bottom of the initial range and near the top of the more recent range. It feels like I'm being low-balled and simultaneously manipulated.

Since I cannot be hired for two months, how should this affect my negotiation?

I am currently working as a temp-to-hire. The temp agency I work for has told me that the salary range I would receive at this company is 100-115 (numbers are for illustration only).

The management of the company that would hire me recently gave me a different range of 90-105 (about 15% lower than the range given by the temp agency), with an informal offer of 100 (the bottom of the range from the temp agency, near the top of the range the company provided).

Is this a negotiating tactic on the part of the new employer? Is it common to be given conflicting salary ranges when working temp-to-hire? Given that I have 2 months left before I would be officially hired, how should I approach this negotiation to maximize the salary in the new position?