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Weather & Climate in Charlestown, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Charlestown enjoys a temperate climate with an average annual temperature of 58°F (14°C). Winters average 35°F in January while summers reach 79°F in July. The area gets 293 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 48.0 inches (wetter than the 38-inch national average). The area receives 4.3 inches of snow annually. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 594 feet.
Temperature
35°F Jan (1°C)
79°F Jul (26°C)
| Annual Average | 58.0°F |
| 7% above US avg | |
| January Average | 35°F (1°C) |
| July Average | 79°F (26°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 594 ft (181 m) |
| Area | 11.5 sq mi (29.8 km²) |
| Population Density | 709/sq mi |
| Coordinates | 38.4298°N, 85.6704°W |
| Timezone | America/Indiana/Indianapolis |
| County | Clark County County |
| Nearest Airport | Louisville Muhammad Ali International (SDF) 18 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 81.4 / 100 |
| Social Vulnerability | 17.8 / 100 |
| Community Resilience | 65.4 / 100 |
Hazard Breakdown
| Tornado | Relatively High |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Low |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Moderate |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Moderate |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
13 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.9.
| Jan 24, 1990 | 6 km WNW of Alton, Indiana | M3.9 | 79 km | 10 km |
| Jan 27, 1990 | 6 km N of Alton, Indiana | M3.8 | 72 km | 5 km |
| Sep 12, 2004 | 4 km NW of Manilla, Indiana | M3.8 | 131 km | 2 km |
| Aug 20, 2015 | 6 km SE of Lawrenceburg, Kentucky | M2.8 | 87 km | 34 km |
| May 11, 2025 | 11 km SE of High Bridge, Kentucky | M2.8 | 119 km | 30 km |
| Mar 9, 1990 | 8 km ENE of New Amsterdam, Indiana | M2.7 | 56 km | 5 km |
| Mar 21, 1990 | 1 km W of Spring Mill, Kentucky | M2.7 | 32 km | 4 km |
| Jan 12, 2023 | 4 km E of Burgin, Kentucky | M2.6 | 112 km | 35 km |
| Aug 4, 2023 | 11 km ENE of Lancaster, Kentucky | M2.6 | 135 km | 17 km |
| Aug 26, 2000 | 6 km N of Boonville, Indiana | M2.6 | 145 km | 5 km |
| Jan 29, 1990 | 11 km S of Paoli, Indiana | M2.6 | 69 km | 0 km |
| Jan 21, 2018 | 8 km SSE of High Bridge, Kentucky | M2.6 | 116 km | 11 km |
| Jan 4, 1999 | 9 km WNW of Mount Sterling, Kentucky | M2.5 | 147 km | 10 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
482 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 59 fatalities, 1,431 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1974 | EF5 | 91 km | 20.8 mi | 3 |
| Mar 2, 2012 | EF4 | 99 km | 9.9 mi | 4 |
| Mar 2, 2012 | EF4 | 45 km | 45.1 mi | 11 |
| May 28, 1996 | EF4 | 32 km | 30.0 mi | 0 |
| Nov 22, 1992 | EF4 | 56 km | 26.7 mi | 1 |
| Jun 2, 1990 | EF4 | 71 km | 18.0 mi | 0 |
| Jun 2, 1990 | EF4 | 84 km | 11.0 mi | 1 |
| Apr 3, 1974 | EF4 | 15 km | 35.6 mi | 11 |
| Apr 3, 1974 | EF4 | 81 km | 37.9 mi | 3 |
| Apr 3, 1974 | EF4 | 78 km | 35.6 mi | 4 |
| Apr 3, 1974 | EF4 | 51 km | 27.1 mi | 0 |
| Apr 3, 1974 | EF4 | 67 km | 79.4 mi | 4 |
| Apr 3, 1974 | EF4 | 27 km | 18.5 mi | 3 |
| Mar 2, 2012 | EF3 | 74 km | 8.7 mi | 3 |
| May 25, 2011 | EF3 | 77 km | 6.8 mi | 0 |
| Feb 28, 2011 | EF3 | 45 km | 2.3 mi | 0 |
| Mar 8, 2009 | EF3 | 94 km | 1.1 mi | 0 |
| Oct 18, 2007 | EF3 | 11 km | 4.8 mi | 0 |
| Nov 15, 2005 | EF3 | 100 km | 10.0 mi | 0 |
| May 30, 2004 | EF3 | 79 km | 15.0 mi | 1 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
20 wildfires (100+ acres) recorded within 100 km. Largest: JPG 09 1 (6,113 acres, 1998).
| Year | Name | Acres Burned | Distance |
| 1998 | JPG 09 1 | 6,113 | 55 km |
| 2005 | RX BURNPLAN AREA 2-06 | 5,054 | 54 km |
| 2007 | UNITS 8-9 2008 | 4,316 | 52 km |
| 2006 | UNIT 19 06 WUI | 3,412 | 52 km |
| 2003 | WUI 3 03 | 3,372 | 64 km |
| 2010 | WUI UNIT 28K | 3,230 | 67 km |
| 1999 | UNNAMED | 3,122 | 63 km |
| 2002 | UNIT 8 | 2,753 | 52 km |
| 2005 | UNIT 3 05 | 2,511 | 63 km |
| 2001 | 01 UNIT 16 | 2,361 | 55 km |
| 2011 | WUI UNITS 0 AND 1 2011 | 2,215 | 52 km |
| 2004 | UNIT 19 | 2,004 | 51 km |
| 2003 | UNIT 8 03 | 1,971 | 54 km |
| 2008 | FY 09 UNIT 42 RX FALL 2008 | 1,942 | 58 km |
| 2000 | JPG 14 | 1,908 | 53 km |
| 2003 | UNIT 16 03 | 1,809 | 54 km |
| 2021 | UNNAMED | 1,547 | 93 km |
| 2002 | UNIT 9 | 1,485 | 53 km |
| 1995 | UNNAMED | 1,462 | 57 km |
| 2010 | TRACER | 1,408 | 66 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 35°F (1°C) | 3.2 in | Coldest |
| February | 35°F (2°C) | 3.0 in | |
| March | 45°F (7°C) | 4.2 in | |
| April | 55°F (13°C) | 4.4 in | |
| May | 64°F (18°C) | 4.7 in | Wettest |
| June | 72°F (22°C) | 3.9 in | |
| July | 79°F (26°C) | 4.5 in | Warmest |
| August | 75°F (24°C) | 3.9 in | |
| September | 68°F (20°C) | 3.0 in | |
| October | 56°F (14°C) | 2.9 in | Driest |
| November | 46°F (8°C) | 3.9 in | |
| December | 36°F (2°C) | 3.8 in |
Charlestown has a seasonal temperature swing of 45°F / from 35°F in January to 79°F in July. Total annual precipitation is 45.2 inches, with May being the wettest month (4.7") and October the driest (2.9").