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Weather & Climate in St. Marks, FL
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. Marks enjoys a temperate climate with an average annual temperature of 69°F (20°C). Winters average 52°F in January while summers reach 83°F in July. The area gets 306 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 58.8 inches (wetter than the 38-inch national average). Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 13 feet.
Temperature
52°F Jan (11°C)
83°F Jul (28°C)
| Annual Average | 68.5°F |
| 27% above US avg | |
| January Average | 52°F (11°C) |
| July Average | 83°F (28°C) |
| Sunny Days | 306 days/yr |
Geography
| Elevation | 13 ft (4 m) |
| Area | 1.9 sq mi (5.0 km²) |
| Population Density | 139/sq mi |
| Coordinates | 30.1661°N, 84.2083°W |
| Timezone | America/New_York |
| County | Wakulla County County |
| Nearest Airport | Tallahassee International (TLH) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 46.7 / 100 |
| Social Vulnerability | 12.8 / 100 |
| Community Resilience | 42.2 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Relatively Moderate |
| Earthquake | Very Low |
| Wildfire | Relatively Low |
| Flood | Very Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
| Coastal Flood | Relatively Moderate |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Hurricane History
13 hurricanes (Category 1+) recorded within 500 km since 1980. Strongest on record: Category 5.
| Year | Name | Category | Max Wind | Closest |
| 2024 | Helene | Category 4 | 138 mph | 52 km |
| 2024 | Debby | Category 1 | 81 mph | 83 km |
| 2023 | Idalia | Category 4 | 132 mph | 66 km |
| 2018 | Michael | Category 5 | 161 mph | 114 km |
| 2017 | Irma | Category 1 | 75 mph | 293 km |
| 2016 | Hermine | Category 1 | 81 mph | 13 km |
| 2005 | Dennis | Category 4 | 138 mph | 260 km |
| 2000 | Gordon | Category 1 | 75 mph | 244 km |
| 1998 | Earl | Category 2 | 92 mph | 144 km |
| 1995 | Opal | Category 3 | 115 mph | 265 km |
| 1995 | Erin | Category 2 | 98 mph | 159 km |
| 1985 | Elena | Category 3 | 127 mph | 152 km |
| 1985 | Kate | Category 3 | 115 mph | 73 km |
Source: NOAA IBTrACS (Category 1+, 1980–2026).
Tornado History
318 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF3. Total: 26 fatalities, 161 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Mar 3, 2019 | EF3 | 37 km | 8.8 mi | 0 |
| Feb 19, 2009 | EF3 | 83 km | 1.5 mi | 0 |
| Feb 13, 2000 | EF3 | 95 km | 15.0 mi | 7 |
| Apr 19, 1988 | EF3 | 82 km | 12.0 mi | 4 |
| Dec 28, 1968 | EF3 | 77 km | 0.5 mi | 0 |
| May 10, 2024 | EF2 | 60 km | 24.2 mi | 0 |
| May 10, 2024 | EF2 | 41 km | 24.8 mi | 2 |
| Apr 27, 2023 | EF2 | 63 km | 2.5 mi | 0 |
| Mar 3, 2019 | EF2 | 77 km | 2.7 mi | 0 |
| Jan 22, 2017 | EF2 | 84 km | 18.7 mi | 0 |
| Nov 17, 2014 | EF2 | 87 km | 22.2 mi | 0 |
| Feb 18, 2009 | EF2 | 73 km | 10.4 mi | 0 |
| Feb 18, 2009 | EF2 | 71 km | 5.9 mi | 0 |
| Mar 7, 2008 | EF2 | 70 km | 0.4 mi | 0 |
| Sep 15, 2004 | EF2 | 89 km | 7.0 mi | 4 |
| Mar 15, 2001 | EF2 | 77 km | 6.0 mi | 0 |
| Dec 19, 1995 | EF2 | 73 km | 0.3 mi | 1 |
| Jun 8, 1989 | EF2 | 85 km | 3.0 mi | 3 |
| Nov 5, 1988 | EF2 | 86 km | 8.0 mi | 1 |
| Apr 18, 1988 | EF2 | 92 km | 2.7 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: EAST FORK (26,251 acres, 2004).
| Year | Name | Acres Burned | Distance |
| 2004 | EAST FORK | 26,251 | 35 km |
| 1985 | UNNAMED | 25,845 | 81 km |
| 2021 | BU 360 361 362 363 | 24,747 | 34 km |
| 1998 | HOLIDAY | 24,666 | 34 km |
| 2013 | UNNAMED | 24,574 | 34 km |
| 2008 | UNNAMED | 18,704 | 35 km |
| 2006 | UNNAMED | 11,747 | 25 km |
| 2005 | UNNAMED | 11,539 | 58 km |
| 2009 | UNNAMED | 11,445 | 63 km |
| 2021 | BU 83/84/85 | 10,582 | 59 km |
| 2010 | UNNAMED | 10,261 | 26 km |
| 2009 | UNNAMED | 10,132 | 58 km |
| 2009 | UNNAMED | 10,098 | 48 km |
| 2008 | GUM BAY | 9,965 | 49 km |
| 2006 | UNNAMED | 9,352 | 37 km |
| 2007 | UNNAMED | 9,252 | 24 km |
| 2008 | UNNAMED | 9,117 | 50 km |
| 2018 | UNNAMED | 8,688 | 59 km |
| 2011 | UNNAMED | 8,424 | 69 km |
| 2014 | BURN UNIT 057 | 8,381 | 57 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 52°F (11°C) | 4.8 in | Coldest |
| February | 54°F (12°C) | 4.5 in | |
| March | 61°F (16°C) | 5.7 in | |
| April | 67°F (19°C) | 3.5 in | |
| May | 74°F (23°C) | 4.3 in | |
| June | 79°F (26°C) | 6.1 in | |
| July | 83°F (28°C) | 8.2 in | Warmest, Wettest |
| August | 81°F (27°C) | 7.7 in | |
| September | 78°F (26°C) | 5.6 in | |
| October | 70°F (21°C) | 3.2 in | Driest |
| November | 61°F (16°C) | 3.4 in | |
| December | 54°F (12°C) | 4.1 in |
St. Marks has a seasonal temperature swing of 30°F / from 52°F in January to 83°F in July. Total annual precipitation is 61.1 inches, with July being the wettest month (8.2") and October the driest (3.2").