WASHINGTON — On the heels of the Senate’s passage of a long-awaited farm bill, the Obama administration announced the creation of seven regional “climate hubs” on Wednesday to help farmers and rural communities respond to the risks of climate change, including drought, invasive pests, fires and floods.

White House officials described the move as one of several executive actions that President Obama will take on climate change without action from Congress.

In substance, the creation of the climate hubs is a limited step, but it is part of a broader campaign by the administration to advance climate policy wherever possible with executive authority. The action is also part of a push to build political support for the administration’s more divisive moves on climate change — in particular, the Environmental Protection Agency’s regulations on coal-fired power plants.

Tom Vilsack, the secretary of agriculture and a former Iowa governor, announced the creation of the climate hubs at a White House briefing.