Humid, cloudy gray skies with rain and possible hail will bring more moisture to metro Denver and Colorado’s Front Range Monday — continued plant-friendly conditions that in May ranked among the wettest on record, according to the National Weather Service.

The high temperature in Denver will be 71 degrees, weather service forecasters said.

Scattered storms will form in the mountains and pelt the Front Range urban corridor and adjacent high plains with rain in the afternoon and evening, forecasters said. The rain could be intense in some areas. Any hail is expected to be relatively small. Thunder, lightning, and sudden gusts of wind are expected.

Meteorologists estimated the chances of rain and thunderstorms at 50% Monday, mostly after 11 a.m. The wind could gust at speeds as fast as 18 miles per hour. At night in Denver, the temperature should decrease to 52 degrees.

On Tuesday, the temperatures in metro Denver are expected to increase to a high near 78 degrees with more rain showers and thunderstorms expected in the afternoon. Weather service forecasters said rain and cloudy skies are more likely than not through Wednesday night. On Thursday and Friday, more rain is likely, forecasters said.

During May, 5.53 inches of rain fell on metro Denver, according to weather service measurements taken at Denver International Airport. That made May the 4th wettest on record