Stone Mountain (GA) Temperature by Month
The average annual maximum temperature in Stone Mountain, Georgia, United States of America is 22°C (72°F), with daytime highs ranging from 11°C (52°F) in January to 32°C (90°F) in July. This page covers monthly averages, day-night differences, and how Stone Mountain compares to cities worldwide.
Stone Mountain Monthly Temperatures
Depending on the time of the year, temperatures range from very warm to cold in Stone Mountain. Nighttime lows follow the same pattern, ranging from 21°C (70°F) to 0°C (32°F).
The chart below illustrates the average maximum day and minimum night temperatures in Stone Mountain by month:
The minimum temperature is often recorded between 4 AM and 6 AM, while the highest temperature is usually reached at 3 PM, when the sun's heating effect is strongest. July, the warmest month, gets 273 hours of sunshine.
The chart below shows the average temperature throughout the year:
Temperature: Stone Mountain vs the United States of America
The map below shows the annual temperature across the United States of America. You can also select individual months if you want to compare a specific time of year.
very warm
warm
pleasant
moderate
cold
very cold
Stone Mountain vs World: Temperature Compared
Stone Mountain's average annual maximum temperature is 22°C (72°F). To put that in context, here's how it compares to a few well-known destinations:
Seville, Spain averages 23°C (73°F) a year — one of the warmer cities in Western Europe, with long hot summers.
Reykjavík, Iceland averages 9°C (48°F) a year — mild summers by Icelandic standards, but cold winters and frequent wind.
Beijing, China averages 20°C (68°F) annually, but with big seasonal swings — very cold winters and hot summers.
Tokyo, Japan averages 21°C (70°F) a year, with hot summers, cool winters, and a well-defined cherry blossom spring.
What Does the Temperature Feel Like in Stone Mountain?
Temperature alone doesn't tell the whole story — humidity plays a big role in how warm or cold it actually feels. High humidity in summer makes the heat feel more intense, particularly once temperatures climb above 25°C. In winter, the same humidity can make cold air feel sharper than the thermometer suggests.
In the cooler months, when temperatures drop below 10°C, high humidity makes the cold feel more cutting than it would in dry conditions.
In Stone Mountain, January is the coolest month, with average highs of 11°C (52°F) and humidity around 67% — considered high. In July, the warmest month, temperatures average 32°C (90°F) with 74% humidity — conditions that feel high. For a full picture, see our humidity page.
Climate temperature data is typically calculated as a 30-year average. This smooths out year-to-year variability and gives a more reliable picture of what a place is actually like, rather than what happened in any single unusual year.
The readings come from a range of sources — land-based weather stations, ocean buoys, ships, and satellites. That data is collected by weather services around the world, then pooled, quality-checked, and averaged to produce the climate records you see here.
Seasonal temperature shifts influence more than just how warm it feels — they also drive changes in rainfall, cloud cover, and wind patterns throughout the year.
Warmer air holds more moisture, which tends to mean heavier or more frequent rain during the warmer months. When temperatures drop in winter, any precipitation that does fall is more likely to come as snow or sleet, though in Stone Mountain this rarely lasts long on the ground.
For more on Stone Mountain's weather — including monthly rainfall, sunshine hours, and humidity — visit our Stone Mountain climate page.
