Other facts from our historical weather data: Which is the warmest month in Glenwood Springs? July has an average maximum temperature of 29°C (84°F) and is the warmest month of the year. Which is the coldest month in Glenwood Springs? The coldest month is January with an average maximum temperature of 1°C (34°F). Which is the wettest month in Glenwood Springs? September tops the wettest month list with 58mm (2.3 in) of rainfall. Which is the driest month in Glenwood Springs? June is the driest month with 17mm (0.7 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.