Weather will likely play an important role when you plan your trip to South Glens Falls, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August, with an average temperature of 19°C, while the coldest months are January and February, with an average of -3°C. The snowiest months in South Glens Falls are January, March, November and December, with each month seeing an average of 33 cm of snowfall.