NASA selected ULA's launch competitor SpaceX for a new mission to study previously unmapped water patterns.
The long-awaited launch will introduced the first major updates to the weather monitoring since the 1980s.
The Worldview-4, a DigitalGlobe observation satellite, is scheduled to launch late October to early November, ULA announced this week.
United Launch Alliance is experiencing historic delays on its WorldView-4 mission launch.
Together with United Launch Alliance and a host of national and international collaborators, NASA will send the spacecraft OSIRIS-REx into space Thursday.
A vacuum leak in one of the instruments onboard postponed the mission, but NASA has officially set the window for May 5, 2018.
The company tweeted that the accident was due to "an anomaly" on the pad during testing before the September 3 launch date.