The Nashua River is reaching dangerously high levels as weather forecasts show more rain is on the way

Between June and August, New Hampshire received a statewide average rainfall of 21.11 inches, nearly two inches more than the second wettest summer on record when the state received 19.22 inches of rain in 2006. 2008 was third in The rain recorded when the state received 19.19 inches.

The state received much more rain than normal this summer, 9.39 inches above the average rainfall of 11.72 inches.

That was a stark contrast to last summer, when much of the state was experiencing drought-like conditions that presented its own set of challenges. During the same three-month period last year, the state received just 10.63 inches of rain, just over half the amount that has fallen so far this year.

“Tomorrow will be another big day,” said Stephen Barron, a meteorologist with the National Weather Service in Gray, Maine.

He said Nashua could receive up to another inch of rain, as the ground is already saturated from Monday’s heavy rains. If a thunderstorm forms, certain areas could receive more rain. The Nashua River gauge in Massachusetts found that the river is currently at 6 feet, but is expected to continue rising.

Tuesday’s mid-morning forecast found the river was expected to reach more than 7 feet by 12 noon Wednesday, the action phase, when mitigation is required to prepare for significant hydrologic activity.

Barron said the current weather pattern is similar to what the state experienced over the summer, with slow-moving low pressure systems passing through the north. Depending on what happens with Hurricane Lee, wet weather could pass this weekend.

Barron said forecasters will have a better understanding of the path the hurricane will follow sometime Wednesday.

Nashua received between 2 to 4 inches of rain yesterday.

“Our infrastructure was a little overwhelmed by the speed of the rain,” Nashua Fire Chief Steve Buxton said. He said there was a lot of local flooding and people had to be rescued when they were stranded in the water. He added that creeks and small streams began flooding people’s yards, and one of the city’s Federal Aviation Administration centers was severely damaged.

No one was forced to evacuate, and Buxton said he had not received reports of any serious injuries due to the flooding.

“We’re monitoring the river,” Buxton said. The river is expected to rise without crossing its banks.

The last time the river reached its peak in modern history was in 2014, when it reached 9.21 feet.

A report from the National Weather Service forecasts minor flooding of lowlands along the riverfront in East Pepperell, Massachusetts, downstream through Hollis, New Hampshire, and may impact low-lying businesses along Route 119 near the intersection with Route 111.

Buxton said residents should make sure storm drains are clear of debris and remove debris from their yards that might clog drains.

“Rain is expected in the near future. Hopefully it will come at a slower pace,” Buxton said.

Amanda Gokee can be reached at amanda.gokee@globe.com. follow her @Amanda_jokey.