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Weather & Climate in St. Marks, KS
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. Marks enjoys a temperate climate with an average annual temperature of 57°F (14°C). Winters average 33°F in January while summers reach 81°F in July. The area gets 317 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 34.4 inches. Air quality is rated Good with a median AQI of 39. The city sits at an elevation of 1,408 feet.
Temperature
33°F Jan (0°C)
81°F Jul (27°C)
| Annual Average | 57.1°F |
| 6% above US avg | |
| January Average | 33°F (0°C) |
| July Average | 81°F (27°C) |
| Sunny Days | 317 days/yr |
Geography
| Elevation | 1,408 ft (429 m) |
| Area | 1.0 sq mi (2.5 km²) |
| Population Density | 89/sq mi |
| Coordinates | 37.7393°N, 97.5591°W |
| Timezone | America/Chicago |
| County | Sedgwick County County |
| Nearest Airport | Wichita Dwight D Eisenhower Ntl (ICT) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 96.6 / 100 |
| Social Vulnerability | 29.9 / 100 |
| Community Resilience | 70.4 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Relatively Moderate |
| Flood | Relatively High |
| Hail | Relatively High |
| Strong Wind | Relatively High |
| Heat Wave | Relatively High |
| Winter Weather | Very High |
| Lightning | Very High |
| Ice Storm | Very High |
| Drought | Relatively Low |
| Cold Wave | Very High |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
2,396 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M4.5.
| Jan 31, 2022 | 7 km NW of Medford, Oklahoma | M4.5 | 101 km | 8 km |
| Jan 19, 2020 | 2 km W of South Hutchinson, Kansas | M4.5 | 48 km | 5 km |
| May 17, 2019 | 8 km E of Pond Creek, Oklahoma | M4.4 | 120 km | 5 km |
| Jun 9, 2018 | 8 km E of Nescatunga, Oklahoma | M4.4 | 117 km | 10 km |
| Jul 20, 2015 | 7 km SSE of Byron, Oklahoma | M4.4 | 117 km | 4 km |
| Sep 8, 2017 | 9 km ESE of Jefferson, Oklahoma | M4.3 | 116 km | 6 km |
| Jul 29, 2014 | 9 km E of Nescatunga, Oklahoma | M4.3 | 118 km | 5 km |
| Feb 5, 2015 | 8 km NE of Cherokee, Oklahoma | M4.2 | 122 km | 4 km |
| Aug 16, 2019 | 3 km W of South Hutchinson, Kansas | M4.2 | 49 km | 5 km |
| Jan 26, 2015 | 5 km NNE of Medford, Oklahoma | M4.2 | 100 km | 7 km |
| Mar 5, 2018 | 5 km NNW of Breckinridge, Oklahoma | M4.2 | 141 km | 8 km |
| Mar 4, 2018 | 4 km N of Breckinridge, Oklahoma | M4.2 | 141 km | 8 km |
| Feb 19, 2021 | 6 km SW of Manchester, Oklahoma | M4.2 | 98 km | 7 km |
| Aug 18, 2019 | 5 km WSW of South Hutchinson, Kansas | M4.1 | 50 km | 5 km |
| Sep 15, 1995 | 7 km NNW of Alva, Oklahoma | M4.1 | 139 km | 5 km |
| Jun 5, 2015 | 3 km SW of Danville, Kansas | M4.1 | 62 km | 2 km |
| Aug 14, 2015 | 6 km WNW of Medford, Oklahoma | M4.1 | 103 km | 0 km |
| Mar 29, 2017 | 8 km W of Deer Creek, Oklahoma | M4.1 | 103 km | 3 km |
| Mar 24, 2015 | 11 km ENE of Nescatunga, Oklahoma | M4.0 | 115 km | 7 km |
| May 23, 2015 | 6 km NNW of Sun City, Kansas | M4.0 | 128 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
757 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 50 fatalities, 690 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 26, 1991 | EF5 | 31 km | 46.0 mi | 17 |
| Mar 13, 1990 | EF5 | 47 km | 22.0 mi | 1 |
| Mar 13, 1990 | EF5 | 41 km | 48.0 mi | 1 |
| Apr 14, 2012 | EF4 | 96 km | 50.3 mi | 0 |
| May 12, 2004 | EF4 | 66 km | 1.2 mi | 0 |
| May 3, 1999 | EF4 | 49 km | 24.0 mi | 6 |
| Jun 15, 1992 | EF4 | 71 km | 6.0 mi | 0 |
| Apr 26, 1991 | EF4 | 83 km | 25.0 mi | 1 |
| Mar 26, 1991 | EF4 | 50 km | 13.0 mi | 0 |
| Jun 23, 1969 | EF4 | 13 km | 8.7 mi | 0 |
| Jun 10, 1958 | EF4 | 49 km | 9.0 mi | 15 |
| Jun 8, 1950 | EF4 | 73 km | 17.1 mi | 1 |
| Apr 29, 2022 | EF3 | 35 km | 12.7 mi | 0 |
| Jul 13, 2015 | EF3 | 63 km | 5.3 mi | 0 |
| May 6, 2015 | EF3 | 14 km | 16.5 mi | 0 |
| May 19, 2012 | EF3 | 73 km | 9.7 mi | 0 |
| May 19, 2012 | EF3 | 78 km | 9.7 mi | 0 |
| Apr 14, 2012 | EF3 | 28 km | 13.2 mi | 0 |
| Apr 14, 2012 | EF3 | 68 km | 18.1 mi | 0 |
| May 23, 2008 | EF3 | 99 km | 21.9 mi | 2 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (60,976 acres, 2014).
| Year | Name | Acres Burned | Distance |
| 2014 | UNNAMED | 60,976 | 91 km |
| 2002 | UNNAMED | 26,655 | 96 km |
| 2016 | UNNAMED | 15,100 | 97 km |
| 2016 | FERGUSON RANCH | 13,625 | 96 km |
| 1991 | UNNAMED | 13,063 | 96 km |
| 1989 | UNNAMED | 12,241 | 93 km |
| 2016 | BURMAC | 10,668 | 40 km |
| 1994 | UNNAMED | 8,987 | 64 km |
| 2004 | UNNAMED | 8,183 | 99 km |
| 2002 | UNNAMED | 8,105 | 62 km |
| 2017 | HIGHLANDS | 7,418 | 59 km |
| 2022 | COTTONWOOD COMPLEX | 6,487 | 39 km |
| 2008 | UNNAMED | 6,406 | 89 km |
| 2006 | TWELTH STREET | 6,282 | 39 km |
| 1996 | UNNAMED | 6,069 | 78 km |
| 2018 | RICE COUNTY | 5,504 | 67 km |
| 2011 | JORDEN SPRINGS | 5,488 | 84 km |
| 2015 | UNNAMED | 5,220 | 100 km |
| 2020 | WHEAT STATE | 4,847 | 38 km |
| 2002 | UNNAMED | 4,667 | 95 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (0°C) | 0.8 in | Coldest, Driest |
| February | 36°F (2°C) | 1.0 in | |
| March | 46°F (8°C) | 2.4 in | |
| April | 56°F (13°C) | 2.8 in | |
| May | 65°F (18°C) | 4.1 in | |
| June | 75°F (24°C) | 4.5 in | Wettest |
| July | 81°F (27°C) | 3.4 in | Warmest |
| August | 79°F (26°C) | 3.1 in | |
| September | 71°F (22°C) | 3.5 in | |
| October | 59°F (15°C) | 2.4 in | |
| November | 44°F (7°C) | 1.8 in | |
| December | 34°F (1°C) | 1.1 in |
St. Marks has a seasonal temperature swing of 48°F / from 33°F in January to 81°F in July. Total annual precipitation is 30.8 inches, with June being the wettest month (4.5") and January the driest (0.8").