The best way to find federal procurement forecasts for upcoming opportunities is to check individual agency websites, as there is no single, centralized federal procurement forecast portal. While SAM.gov lists presolicitation notices and sources sought notices once they are released, many federal agencies publish their own procurement forecasts on their small business or acquisition pages. These forecasts provide early insight into potential contract actions, often including estimated release dates, contract values, and set-aside possibilities.
For example, the Department of Defense, the Department of Energy, and the General Services Administration often have sections on their websites dedicated to procurement forecasts. These forecasts are generally updated periodically, so consistent checking is necessary. You can also contact the small business offices within these agencies; they often have a deeper understanding of upcoming needs and can guide you to relevant forecast information. Remember that these forecasts are planning documents and do not guarantee a solicitation will be issued.