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Weather & Climate in Thomson, GA
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Thomson enjoys a temperate climate with an average annual temperature of 64°F (18°C). Winters average 46°F in January while summers reach 81°F in July. The area gets 323 sunny days per year, well above the U.S. average of 205 / making it one of the sunnier locations in the country. Air quality is rated Good with a median AQI of 44. The city sits at an elevation of 510 feet.
Temperature
46°F Jan (8°C)
81°F Jul (27°C)
| Annual Average | 63.6°F |
| 18% above US avg | |
| January Average | 46°F (8°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 323 days/yr |
Geography
| Elevation | 510 ft (155 m) |
| Area | 4.4 sq mi (11.4 km²) |
| Population Density | 1,422/sq mi |
| Coordinates | 33.4693°N, 82.4951°W |
| Timezone | America/New_York |
| County | McDuffie County County |
| Nearest Airport | Augusta Regional At Bush Field (AGS) 31 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 44.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 25.0 / 100 |
| Social Vulnerability | 76.3 / 100 |
| Community Resilience | 27.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Very Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
39 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.1.
| Feb 15, 2014 | 12 km ENE of Parksville, South Carolina | M4.1 | 54 km | 5 km |
| Jun 18, 2022 | 7 km E of Stillmore, Georgia | M3.9 | 118 km | 1 km |
| Jul 13, 2003 | 6 km N of Cobbtown, Georgia | M3.6 | 130 km | 5 km |
| Mar 18, 2003 | 11 km S of Rayle, Georgia | M3.5 | 44 km | 5 km |
| Jan 18, 2000 | 11 km SSE of Gray, Georgia | M3.5 | 109 km | 19 km |
| Jan 3, 1992 | 4 km ENE of Willington, South Carolina | M3.4 | 57 km | 3 km |
| Dec 7, 2009 | 4 km WNW of Deepstep, Georgia | M3.2 | 69 km | 7 km |
| Aug 8, 1993 | 12 km ENE of Aiken, South Carolina | M3.2 | 85 km | 9 km |
| Jun 20, 2017 | 6 km SW of Augusta, Georgia | M3.2 | 45 km | 13 km |
| Apr 4, 2009 | 15 km N of Milledgeville, Georgia | M3.1 | 72 km | 0 km |
| Aug 23, 2025 | 3 km N of Coronaca, South Carolina | M3.0 | 98 km | 2 km |
| Feb 16, 2014 | 13 km WNW of Edgefield, South Carolina | M3.0 | 57 km | 7 km |
| Feb 18, 2005 | 7 km ENE of Irmo, South Carolina | M2.9 | 147 km | 1 km |
| Aug 23, 2025 | 3 km NNW of Coronaca, South Carolina | M2.9 | 98 km | 7 km |
| Sep 18, 1996 | 6 km E of Clarks Hill, South Carolina | M2.8 | 43 km | 14 km |
| Apr 26, 2013 | 9 km E of Lincolnton, Georgia | M2.8 | 36 km | 12 km |
| Apr 6, 2017 | 6 km WSW of Sparta, Georgia | M2.7 | 56 km | 11 km |
| Apr 23, 1993 | 14 km E of Mount Zion, Georgia | M2.7 | 35 km | 0 km |
| Sep 2, 2001 | 10 km SW of Plum Branch, South Carolina | M2.7 | 39 km | 21 km |
| Jul 4, 2012 | 11 km NNE of Deepstep, Georgia | M2.7 | 56 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Hurricane History
9 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 4.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Helene | Category 2 | 109 mph | 253 km |
| 2023 | Idalia | Category 1 | — | 287 km |
| 2018 | Michael | Category 3 | 92 mph | 201 km |
| 2016 | Matthew | Category 2 | 98 mph | 241 km |
| 2004 | Charley | Category 1 | 81 mph | 292 km |
| 2004 | Gaston | Category 1 | 75 mph | 274 km |
| 1989 | Hugo | Category 4 | 138 mph | 188 km |
| 1985 | Bob | Category 1 | 75 mph | 234 km |
| 1985 | Kate | Category 1 | 75 mph | 238 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
299 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 24 fatalities, 376 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 22, 1992 | EF4 | 94 km | 32.0 mi | 5 |
| Dec 13, 1973 | EF4 | 90 km | 1.0 mi | 2 |
| Mar 31, 1973 | EF4 | 68 km | 22.6 mi | 7 |
| Apr 13, 2020 | EF3 | 91 km | 8.5 mi | 0 |
| Apr 13, 2020 | EF3 | 77 km | 37.9 mi | 0 |
| Apr 10, 2009 | EF3 | 48 km | 26.3 mi | 0 |
| Apr 10, 2009 | EF3 | 45 km | 6.8 mi | 0 |
| Apr 10, 2009 | EF3 | 22 km | 17.7 mi | 0 |
| Apr 10, 2009 | EF3 | 60 km | 14.6 mi | 0 |
| Feb 18, 2009 | EF3 | 43 km | 10.4 mi | 1 |
| Feb 18, 2009 | EF3 | 41 km | 19.7 mi | 0 |
| May 7, 1998 | EF3 | 63 km | 5.0 mi | 0 |
| May 7, 1998 | EF3 | 45 km | 12.0 mi | 1 |
| Nov 22, 1992 | EF3 | 24 km | 67.0 mi | 1 |
| Dec 13, 1973 | EF3 | 94 km | 10.7 mi | 0 |
| Dec 13, 1973 | EF3 | 79 km | 17.7 mi | 0 |
| Jan 13, 1972 | EF3 | 68 km | 33.6 mi | 0 |
| Apr 5, 2022 | EF2 | 100 km | 5.7 mi | 0 |
| May 3, 2021 | EF2 | 81 km | 29.4 mi | 0 |
| Apr 13, 2020 | EF2 | 49 km | 16.5 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (8,427 acres, 2009).
| Year | Name | Acres Burned | Distance |
| 2009 | UNNAMED | 8,427 | 86 km |
| 2015 | UNNAMED | 5,084 | 78 km |
| 2010 | COMPT 163 | 4,755 | 89 km |
| 2014 | UNNAMED | 3,897 | 44 km |
| 2019 | UNNAMED | 3,772 | 44 km |
| 2009 | UNNAMED | 3,165 | 51 km |
| 2010 | UNNAMED | 2,968 | 84 km |
| 2021 | C-326/327 LC | 2,852 | 40 km |
| 2010 | UNNAMED | 2,796 | 96 km |
| 2007 | UNNAMED | 2,753 | 99 km |
| 2008 | UNNAMED | 2,711 | 97 km |
| 2013 | UNNAMED | 2,654 | 55 km |
| 2015 | UNNAMED | 2,574 | 99 km |
| 2010 | UNNAMED | 2,532 | 43 km |
| 2008 | UNNAMED | 2,407 | 80 km |
| 2010 | UNNAMED | 2,330 | 95 km |
| 2018 | UNNAMED | 2,286 | 73 km |
| 2018 | UNNAMED | 2,262 | 91 km |
| 2009 | UNNAMED | 2,228 | 93 km |
| 2009 | UNNAMED | 2,216 | 80 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 46°F (8°C) | 4.7 in | Coldest |
| February | 47°F (9°C) | 4.3 in | |
| March | 55°F (13°C) | 4.9 in | Wettest |
| April | 62°F (17°C) | 3.7 in | |
| May | 70°F (21°C) | 3.8 in | |
| June | 77°F (25°C) | 4.0 in | |
| July | 81°F (27°C) | 4.4 in | Warmest |
| August | 79°F (26°C) | 4.3 in | |
| September | 74°F (23°C) | 3.2 in | |
| October | 63°F (17°C) | 3.2 in | |
| November | 54°F (12°C) | 2.9 in | Driest |
| December | 47°F (8°C) | 3.9 in |
Thomson has a seasonal temperature swing of 35°F / from 46°F in January to 81°F in July. Total annual precipitation is 47.1 inches, with March being the wettest month (4.9") and November the driest (2.9").