My equation is the following:
=SUMIFS([June 2024]188:[June 2024]263, [Revised Budget]188:[Revised Budget]263, >="01/01/24", [Revised Budget]188:[Revised Budget]263, <="01/31/24")
The equation seems to not recognize the year in the Criteria, so all January dates it includes in the SUM without reference to the year.
These columns are setup as Text/Number, so I am unsure if that is causing an issue.