The top official in Hidalgo County issued a disaster declaration after more than a foot of rain fell, causing widespread damage. One death was also reported across the border in Mexico.
The wildfires, which have killed 28 people and razed vast swaths of land in the southeast in the last week, were 85% contained as of Friday morning, the Korea Forest Service said.
At least 10 sites have suspended or limited weather balloon launches, which used to occur twice daily, because of the Trump administration’s cuts to the National Weather Service.
Officials also said a helicopter crashed during efforts to contain wildfires in the southeastern town of Uiseong, one of the areas hardest-hit by the wildfires.
A brief bout of rain Monday couldn't stop the fires, which have taken advantage of strong winds, low humidity and moderate to long-term drought conditions.