Weather & Climate in Troy, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Troy enjoys a temperate climate with an average annual temperature of 56°F (13°C). Winters average 33°F in January while summers reach 76°F in July. Annual precipitation totals 51.3 inches (wetter than the 38-inch national average). The area receives 10.7 inches of snow annually. Air quality is rated Good with a median AQI of 39. 87% of days have good air quality. The city sits at an elevation of 418 feet.
Temperature
33°F Jan (1°C)
76°F Jul (25°C)
| Annual Average | 55.7°F |
| 3% above US avg | |
| January Average | 33°F (1°C) |
| July Average | 76°F (25°C) |
Geography
| Elevation | 418 ft (127 m) |
| Area | 1.1 sq mi (2.9 km²) |
| Population Density | 477/sq mi |
| Coordinates | 38.0020°N, 86.7990°W |
| Timezone | America/Indiana/Indianapolis |
| County | Perry County County |
| Nearest Airport | Owensboro/Daviess County Regional (OWB) 27 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 39.0 |
| Rating | Good |
| Good Days % | 86.7% |
| Unhealthy Days | 0 |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 35.0 / 100 |
| Social Vulnerability | 35.6 / 100 |
| Community Resilience | 67.9 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
56 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 | 107 km | 14 km |
| Apr 18, 2008 | 9 km NNE of Bellmont, Illinois | M4.7 | 106 km | 15 km |
| Jun 18, 2002 | 6 km SW of Parkers Settlement, Indiana | M4.6 | 84 km | 16 km |
| Apr 21, 2008 | 7 km NNE of Bellmont, Illinois | M4.0 | 106 km | 18 km |
| Dec 7, 2000 | 7 km W of Evansville, Indiana | M3.9 | 74 km | 5 km |
| Jan 24, 1990 | 6 km WNW of Alton, Indiana | M3.9 | 31 km | 10 km |
| Jan 27, 1990 | 6 km N of Alton, Indiana | M3.8 | 38 km | 5 km |
| Nov 11, 1991 | 3 km W of Flat Rock, Illinois | M3.8 | 128 km | 0 km |
| Sep 19, 2017 | 4 km N of Bellmont, Illinois | M3.8 | 108 km | 12 km |
| Apr 25, 2008 | 8 km NNE of Bellmont, Illinois | M3.7 | 106 km | 13 km |
| Jan 2, 2006 | 3 km NNE of Eldorado, Illinois | M3.6 | 143 km | 7 km |
| Nov 20, 2012 | 7 km N of Bellmont, Illinois | M3.6 | 109 km | 19 km |
| May 30, 2015 | 4 km ENE of Geff, Illinois | M3.4 | 145 km | 26 km |
| Jun 5, 2008 | 8 km WNW of Mount Carmel, Illinois | M3.4 | 104 km | 16 km |
| May 1, 2008 | 8 km NNE of Bellmont, Illinois | M3.3 | 105 km | 14 km |
| May 10, 2012 | 0 km NW of Emison, Indiana | M3.1 | 106 km | 11 km |
| Jul 18, 2008 | 6 km NNE of Bellmont, Illinois | M3.1 | 108 km | 18 km |
| Sep 9, 2017 | 4 km N of Bellmont, Illinois | M3.1 | 108 km | 12 km |
| May 30, 2023 | 6 km W of Calhoun, Kentucky | M3.0 | 70 km | 0 km |
| Apr 28, 2000 | 6 km W of Equality, Illinois | M2.9 | 144 km | 1 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
509 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF5. Total: 101 fatalities, 1,327 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 3, 1974 | EF5 | 9 km | 68.0 mi | 6 |
| Apr 3, 1974 | EF5 | 38 km | 32.0 mi | 31 |
| Mar 2, 2012 | EF4 | 72 km | 45.1 mi | 11 |
| May 28, 1996 | EF4 | 93 km | 30.0 mi | 0 |
| Jun 2, 1990 | EF4 | 90 km | 11.0 mi | 1 |
| Jun 2, 1990 | EF4 | 79 km | 13.0 mi | 6 |
| Apr 3, 1974 | EF4 | 68 km | 14.0 mi | 0 |
| Apr 3, 1974 | EF4 | 94 km | 18.5 mi | 3 |
| Apr 3, 1974 | EF4 | 85 km | 37.9 mi | 3 |
| Jul 9, 2024 | EF3 | 94 km | 5.8 mi | 0 |
| Mar 28, 2009 | EF3 | 96 km | 12.4 mi | 0 |
| Mar 8, 2009 | EF3 | 96 km | 1.1 mi | 0 |
| Oct 18, 2007 | EF3 | 42 km | 7.0 mi | 0 |
| Nov 15, 2005 | EF3 | 81 km | 12.0 mi | 0 |
| Nov 6, 2005 | EF3 | 88 km | 41.3 mi | 24 |
| May 30, 2004 | EF3 | 42 km | 15.0 mi | 1 |
| May 11, 2003 | EF3 | 77 km | 1.8 mi | 0 |
| May 23, 2000 | EF3 | 68 km | 6.0 mi | 0 |
| Jan 3, 2000 | EF3 | 46 km | 7.0 mi | 0 |
| Jun 2, 1990 | EF3 | 85 km | 12.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Wildfire History
12 wildfires (100+ acres) recorded within 100 km. Largest: DEAD DEER (1,557 acres, 2007).
| Year | Name | Acres Burned | Distance |
| 2007 | DEAD DEER | 1,557 | 80 km |
| 2017 | UNNAMED | 1,336 | 21 km |
| 2019 | UNNAMED | 1,057 | 23 km |
| 1999 | UNNAMED | 1,039 | 81 km |
| 2021 | UNNAMED | 959 | 24 km |
| 2014 | UNNAMED | 910 | 32 km |
| 2019 | UNNAMED | 892 | 32 km |
| 2024 | LONG RUN RX | 774 | 19 km |
| 2010 | RICEVILLE RX | 671 | 37 km |
| 2000 | UNNAMED | 641 | 88 km |
| 2019 | UNNAMED | 584 | 19 km |
| 2010 | ROCKHOUSE HOLLOW RX | 581 | 20 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 33°F (1°C) | 3.7 in | Coldest |
| February | 37°F (3°C) | 3.5 in | |
| March | 45°F (7°C) | 4.7 in | |
| April | 55°F (13°C) | 5.3 in | |
| May | 65°F (18°C) | 5.8 in | Wettest |
| June | 73°F (23°C) | 5.1 in | |
| July | 76°F (25°C) | 4.1 in | Warmest |
| August | 75°F (24°C) | 3.0 in | Driest |
| September | 69°F (20°C) | 3.7 in | |
| October | 58°F (14°C) | 3.9 in | |
| November | 46°F (8°C) | 3.9 in | |
| December | 37°F (3°C) | 4.5 in |
Troy has a seasonal temperature swing of 43°F / from 33°F in January to 76°F in July. Total annual precipitation is 51.3 inches, with May being the wettest month (5.8") and August the driest (3.0").