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Weather & Climate in St. Charles, KY
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. Charles enjoys a temperate climate with an average annual temperature of 60°F (15°C). Winters average 37°F in January while summers reach 80°F in July. The area gets 299 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 52.2 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 516 feet.
Temperature
37°F Jan (3°C)
80°F Jul (26°C)
| Annual Average | 59.5°F |
| 10% above US avg | |
| January Average | 37°F (3°C) |
| July Average | 80°F (26°C) |
| Sunny Days | 299 days/yr |
Geography
| Elevation | 516 ft (157 m) |
| Area | 1.0 sq mi (2.6 km²) |
| Population Density | 311/sq mi |
| Coordinates | 37.1905°N, 87.5497°W |
| Timezone | America/New_York |
| County | Hopkins County County |
| Nearest Airport | Owensboro/Daviess County Regional (OWB) 43 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 72.6 / 100 |
| Social Vulnerability | 67.5 / 100 |
| Community Resilience | 65.6 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Moderate |
| Ice Storm | Very High |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
81 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M5.2.
| Apr 18, 2008 | 7 km NNE of Bellmont, Illinois | M5.2 | 143 km | 14 km |
| Apr 18, 2008 | 9 km NNE of Bellmont, Illinois | M4.7 | 144 km | 15 km |
| Jun 18, 2002 | 6 km SW of Parkers Settlement, Indiana | M4.6 | 92 km | 16 km |
| Feb 5, 1994 | 2 km WNW of Dongola, Illinois | M4.2 | 146 km | 16 km |
| Jun 6, 2003 | 1 km NE of Bardwell, Kentucky | M4.0 | 133 km | 3 km |
| Apr 21, 2008 | 7 km NNE of Bellmont, Illinois | M4.0 | 143 km | 18 km |
| Dec 7, 2000 | 7 km W of Evansville, Indiana | M3.9 | 87 km | 5 km |
| Jan 24, 1990 | 6 km WNW of Alton, Indiana | M3.9 | 141 km | 10 km |
| Jan 27, 1990 | 6 km N of Alton, Indiana | M3.8 | 148 km | 5 km |
| Sep 19, 2017 | 4 km N of Bellmont, Illinois | M3.8 | 141 km | 12 km |
| Apr 25, 2008 | 8 km NNE of Bellmont, Illinois | M3.7 | 143 km | 13 km |
| Jan 2, 2006 | 3 km NNE of Eldorado, Illinois | M3.6 | 105 km | 7 km |
| Nov 20, 2012 | 7 km N of Bellmont, Illinois | M3.6 | 144 km | 19 km |
| Jun 20, 2005 | 4 km WSW of Blandville, Kentucky | M3.6 | 133 km | 19 km |
| Mar 15, 2017 | 9 km ESE of Wyatt, Missouri | M3.6 | 144 km | 8 km |
| Jul 16, 2004 | 6 km SE of Wyatt, Missouri | M3.5 | 149 km | 4 km |
| May 1, 2016 | 5 km SE of New Grand Chain, Illinois | M3.5 | 127 km | 16 km |
| Jun 5, 2008 | 8 km WNW of Mount Carmel, Illinois | M3.4 | 143 km | 16 km |
| Sep 26, 1994 | 4 km ENE of Blandville, Kentucky | M3.4 | 124 km | 13 km |
| May 1, 2008 | 8 km NNE of Bellmont, Illinois | M3.3 | 143 km | 14 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
499 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 72 fatalities, 901 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Nov 15, 2005 | EF4 | 7 km | 15.0 mi | 0 |
| Apr 3, 1974 | EF4 | 90 km | 14.0 mi | 0 |
| Apr 27, 1970 | EF4 | 90 km | 42.6 mi | 3 |
| Apr 3, 1968 | EF4 | 91 km | 50.6 mi | 2 |
| Mar 4, 1964 | EF4 | 97 km | 18.5 mi | 3 |
| Jul 9, 2024 | EF3 | 87 km | 5.8 mi | 0 |
| May 26, 2024 | EF3 | 47 km | 34.1 mi | 1 |
| Dec 9, 2023 | EF3 | 69 km | 47.2 mi | 4 |
| Dec 11, 2021 | EF3 | 59 km | 28.0 mi | 0 |
| Dec 11, 2021 | EF3 | 88 km | 29.3 mi | 16 |
| Nov 17, 2013 | EF3 | 66 km | 14.1 mi | 0 |
| Nov 17, 2013 | EF3 | 7 km | 8.2 mi | 0 |
| Apr 26, 2011 | EF3 | 59 km | 2.6 mi | 0 |
| Apr 10, 2009 | EF3 | 10 km | 2.0 mi | 0 |
| Mar 28, 2009 | EF3 | 55 km | 12.4 mi | 0 |
| Feb 5, 2008 | EF3 | 29 km | 18.1 mi | 3 |
| Oct 18, 2007 | EF3 | 73 km | 7.0 mi | 0 |
| Apr 2, 2006 | EF3 | 33 km | 29.7 mi | 0 |
| Nov 6, 2005 | EF3 | 51 km | 11.2 mi | 0 |
| Nov 6, 2005 | EF3 | 74 km | 41.3 mi | 24 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: DEVILS BACKBONE RX (3,215 acres, 2010).
| Year | Name | Acres Burned | Distance |
| 2010 | DEVILS BACKBONE RX | 3,215 | 86 km |
| 2010 | FRANKLIN CREEK RX | 2,828 | 61 km |
| 2019 | UNNAMED | 2,286 | 91 km |
| 2019 | UNNAMED | 2,282 | 62 km |
| 2014 | UNNAMED | 1,837 | 70 km |
| 2021 | GAP VIEW RX | 1,575 | 90 km |
| 2022 | DENNISON HOLLOW RX | 1,573 | 93 km |
| 2007 | DEAD DEER | 1,557 | 54 km |
| 2022 | ONE HORSE GAP RX | 1,502 | 87 km |
| 2014 | UNNAMED | 1,493 | 93 km |
| 2006 | UNNAMED | 1,493 | 71 km |
| 2015 | UNNAMED | 1,447 | 92 km |
| 2021 | BEATTY BRANCH RX | 1,396 | 92 km |
| 2016 | UNNAMED | 1,299 | 87 km |
| 2014 | UNNAMED | 1,216 | 87 km |
| 2013 | UNNAMED | 1,203 | 88 km |
| 2024 | LBL - NWDA UNIT 3 RX | 1,187 | 58 km |
| 2013 | UNNAMED | 1,167 | 58 km |
| 1999 | UNNAMED | 1,039 | 57 km |
| 2024 | PINE HOLLOW RX | 1,038 | 98 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 37°F (3°C) | 3.4 in | Coldest |
| February | 37°F (3°C) | 4.0 in | |
| March | 48°F (9°C) | 4.8 in | Wettest |
| April | 57°F (14°C) | 4.8 in | |
| May | 65°F (19°C) | 4.8 in | |
| June | 74°F (23°C) | 3.6 in | |
| July | 80°F (26°C) | 4.2 in | Warmest |
| August | 76°F (25°C) | 3.5 in | |
| September | 70°F (21°C) | 3.4 in | |
| October | 58°F (15°C) | 3.1 in | Driest |
| November | 48°F (9°C) | 4.4 in | |
| December | 38°F (4°C) | 4.5 in |
St. Charles has a seasonal temperature swing of 43°F / from 37°F in January to 80°F in July. Total annual precipitation is 48.5 inches, with March being the wettest month (4.8") and October the driest (3.1").