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Weather & Climate in Stone Mountain, GA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Stone Mountain enjoys a temperate climate with an average annual temperature of 62°F (16°C). Winters average 42°F in January while summers reach 80°F in July. The area gets 304 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Annual precipitation totals 51.4 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 44. The city sits at an elevation of 1,055 feet.
Temperature
42°F Jan (6°C)
80°F Jul (26°C)
| Annual Average | 61.5°F |
| 14% above US avg | |
| January Average | 42°F (6°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 304 days/yr |
Geography
| Elevation | 1,055 ft (322 m) |
| Area | 1.7 sq mi (4.3 km²) |
| Population Density | 4,024/sq mi |
| Coordinates | 33.8042°N, 84.1714°W |
| Timezone | America/New_York |
| County | DeKalb County County |
| Nearest Airport | Hartsfield - Jackson Atlanta International (ATL) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 94.3 / 100 |
| Social Vulnerability | 37.7 / 100 |
| Community Resilience | 33.4 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Relatively Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively Moderate |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | No Rating |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
43 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.5.
| Jul 19, 1997 | 12 km E of Cohutta, Georgia | M3.5 | 141 km | 3 km |
| Jan 18, 2000 | 11 km SSE of Gray, Georgia | M3.5 | 118 km | 19 km |
| Mar 18, 2003 | 11 km S of Rayle, Georgia | M3.5 | 119 km | 5 km |
| Aug 1, 2009 | 8 km ENE of Ducktown, Tennessee | M3.2 | 141 km | 5 km |
| Dec 7, 2009 | 4 km WNW of Deepstep, Georgia | M3.2 | 138 km | 7 km |
| Apr 4, 2009 | 15 km N of Milledgeville, Georgia | M3.1 | 111 km | 0 km |
| Oct 30, 1991 | 9 km NNE of Eton, Georgia | M3.1 | 132 km | 8 km |
| Jun 23, 2008 | 10 km ESE of Cohutta, Georgia | M3.1 | 139 km | 9 km |
| Jan 21, 2022 | 16 km NNE of Eton, Georgia | M2.9 | 139 km | 15 km |
| Sep 19, 1990 | 6 km NNW of Menlo, Georgia | M2.9 | 146 km | 6 km |
| May 19, 1997 | 9 km NNW of Trion, Georgia | M2.9 | 142 km | 3 km |
| Jul 28, 1990 | 3 km WNW of Varnell, Georgia | M2.9 | 146 km | 14 km |
| Jan 19, 1990 | 4 km E of Cohutta, Georgia | M2.8 | 145 km | 11 km |
| Dec 10, 2013 | 11 km SSE of Wildwood Lake, Tennessee | M2.8 | 145 km | 8 km |
| Mar 20, 2000 | 7 km WSW of Linwood, Georgia | M2.8 | 147 km | 4 km |
| Apr 6, 2017 | 6 km WSW of Sparta, Georgia | M2.7 | 121 km | 11 km |
| Jun 18, 1998 | 8 km E of LaFayette, Georgia | M2.7 | 138 km | 3 km |
| Sep 14, 2000 | 3 km SSW of LaFayette, Georgia | M2.7 | 142 km | 0 km |
| Dec 1, 1991 | 0 km WNW of Cohutta, Georgia | M2.7 | 148 km | 15 km |
| Jul 23, 1998 | 5 km SSE of Varnell, Georgia | M2.7 | 137 km | 7 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
5 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 1.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Helene | Category 1 | 92 mph | 290 km |
| 2018 | Michael | Category 1 | 92 mph | 191 km |
| 1995 | Opal | Category 1 | — | 288 km |
| 1989 | Hugo | Category 1 | — | 299 km |
| 1985 | Kate | Category 1 | 75 mph | 264 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
465 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 70 fatalities, 1,415 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 27, 1994 | EF4 | 87 km | 49.0 mi | 3 |
| Nov 22, 1992 | EF4 | 48 km | 20.0 mi | 0 |
| Nov 22, 1992 | EF4 | 96 km | 32.0 mi | 5 |
| Apr 3, 1974 | EF4 | 65 km | 17.7 mi | 6 |
| Jan 12, 2023 | EF3 | 77 km | 31.2 mi | 0 |
| Apr 13, 2020 | EF3 | 87 km | 5.3 mi | 0 |
| Jan 30, 2013 | EF3 | 94 km | 21.8 mi | 1 |
| Apr 27, 2011 | EF3 | 80 km | 21.7 mi | 2 |
| Apr 27, 2011 | EF3 | 91 km | 30.8 mi | 2 |
| Apr 27, 2011 | EF3 | 98 km | 37.0 mi | 1 |
| Apr 27, 2011 | EF3 | 83 km | 23.1 mi | 0 |
| Mar 15, 2008 | EF3 | 92 km | 16.9 mi | 2 |
| Jan 2, 2006 | EF3 | 77 km | 3.0 mi | 0 |
| Mar 20, 1998 | EF3 | 69 km | 4.0 mi | 12 |
| Mar 27, 1994 | EF3 | 86 km | 23.0 mi | 3 |
| Mar 27, 1994 | EF3 | 78 km | 44.0 mi | 3 |
| Mar 27, 1994 | EF3 | 91 km | 40.0 mi | 9 |
| Feb 21, 1993 | EF3 | 51 km | 8.0 mi | 0 |
| Nov 22, 1992 | EF3 | 88 km | 10.0 mi | 1 |
| Mar 29, 1991 | EF3 | 44 km | 5.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (5,084 acres, 2015).
| Year | Name | Acres Burned | Distance |
| 2015 | UNNAMED | 5,084 | 85 km |
| 2010 | COMPT 163 | 4,755 | 84 km |
| 2021 | UNNAMED | 3,808 | 89 km |
| 2007 | 14A-14B-15A-16E-17E | 3,397 | 88 km |
| 2014 | UNNAMED | 3,298 | 91 km |
| 2006 | 10 A 11 E 11 W RX BURN | 2,969 | 87 km |
| 2007 | UNNAMED | 2,753 | 95 km |
| 1988 | COMP 10 | 2,588 | 87 km |
| 2015 | UNNAMED | 2,574 | 92 km |
| 2010 | COMPT 2 | 2,505 | 93 km |
| 2014 | UNNAMED | 2,433 | 91 km |
| 2010 | COMPT 120 | 2,412 | 84 km |
| 1999 | COMP 1312 | 2,401 | 87 km |
| 2018 | COMPARTMENT 4 5 6 7 8 | 2,386 | 96 km |
| 2019 | UNNAMED | 2,294 | 79 km |
| 2018 | UNNAMED | 2,286 | 86 km |
| 2009 | 30 | 2,195 | 98 km |
| 2021 | UNNAMED | 2,143 | 94 km |
| 2018 | UNNAMED | 2,101 | 92 km |
| 2013 | UNNAMED | 2,077 | 80 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 42°F (6°C) | 5.0 in | Coldest |
| February | 46°F (8°C) | 4.7 in | |
| March | 54°F (12°C) | 5.6 in | Wettest |
| April | 61°F (16°C) | 4.1 in | |
| May | 69°F (21°C) | 4.1 in | |
| June | 76°F (25°C) | 3.7 in | |
| July | 80°F (26°C) | 4.9 in | Warmest |
| August | 78°F (26°C) | 3.9 in | |
| September | 73°F (23°C) | 3.7 in | |
| October | 62°F (17°C) | 3.4 in | Driest |
| November | 53°F (12°C) | 3.8 in | |
| December | 45°F (7°C) | 4.3 in |
Stone Mountain has a seasonal temperature swing of 37°F / from 42°F in January to 80°F in July. Total annual precipitation is 51.2 inches, with March being the wettest month (5.6") and October the driest (3.4").