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Weather & Climate in St. Mary of the Woods, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
St. Mary of the Woods experiences four distinct seasons with an average annual temperature of 52°F (11°C). Winters average 27°F in January while summers reach 74°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 47.4 inches (wetter than the 38-inch national average). The area receives 13.0 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
27°F Jan (-3°C)
74°F Jul (23°C)
| Annual Average | 52.0°F |
| 4% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 594 ft (181 m) |
| Area | 1.3 sq mi (3.4 km²) |
| Population Density | 701/sq mi |
| Coordinates | 39.5122°N, 87.4645°W |
| Timezone | America/Indiana/Indianapolis |
| County | Vigo County County |
| Nearest Airport | Terre Haute Regional (HUF) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Moderate |
| Risk Score | 83.2 / 100 |
| Social Vulnerability | 52.4 / 100 |
| Community Resilience | 90.0 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Moderate |
| Winter Weather | Relatively High |
| 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
39 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 | 123 km | 14 km |
| Apr 18, 2008 | 9 km NNE of Bellmont, Illinois | M4.7 | 122 km | 15 km |
| Apr 21, 2008 | 7 km NNE of Bellmont, Illinois | M4.0 | 124 km | 18 km |
| Jun 17, 2021 | Illinois-Indiana border region | M3.8 | 39 km | 6 km |
| Sep 19, 2017 | 4 km N of Bellmont, Illinois | M3.8 | 127 km | 12 km |
| Nov 11, 1991 | 3 km W of Flat Rock, Illinois | M3.8 | 71 km | 0 km |
| Dec 20, 1990 | 5 km S of Stilesville, Indiana | M3.7 | 72 km | 5 km |
| Apr 25, 2008 | 8 km NNE of Bellmont, Illinois | M3.7 | 123 km | 13 km |
| Nov 20, 2012 | 7 km N of Bellmont, Illinois | M3.6 | 124 km | 19 km |
| Apr 14, 2000 | 4 km NW of Heritage Lake, Indiana | M3.6 | 67 km | 5 km |
| Jun 5, 2008 | 8 km WNW of Mount Carmel, Illinois | M3.4 | 122 km | 16 km |
| May 30, 2015 | 4 km ENE of Geff, Illinois | M3.4 | 140 km | 26 km |
| May 1, 2008 | 8 km NNE of Bellmont, Illinois | M3.3 | 123 km | 14 km |
| May 13, 2025 | 7 km SSW of Lerna, Illinois | M3.3 | 76 km | 10 km |
| Dec 17, 1990 | Illinois-Indiana border region | M3.2 | 72 km | 10 km |
| Jan 29, 1993 | 7 km WNW of Brownstown, Illinois | M3.2 | 145 km | 5 km |
| Dec 16, 1996 | 3 km NNE of Terre Haute, Indiana | M3.1 | 6 km | 5 km |
| Jul 18, 2008 | 6 km NNE of Bellmont, Illinois | M3.1 | 125 km | 18 km |
| May 10, 2012 | 0 km NW of Emison, Indiana | M3.1 | 79 km | 11 km |
| Sep 9, 2017 | 4 km N of Bellmont, Illinois | M3.1 | 127 km | 12 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
493 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 46 fatalities, 613 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 2, 1990 | EF4 | 93 km | 12.5 mi | 0 |
| Apr 11, 1965 | EF4 | 76 km | 45.7 mi | 28 |
| Mar 31, 2023 | EF3 | 68 km | 5.9 mi | 2 |
| Mar 31, 2023 | EF3 | 85 km | 40.9 mi | 6 |
| Nov 17, 2013 | EF3 | 83 km | 18.7 mi | 0 |
| Nov 15, 2005 | EF3 | 97 km | 12.0 mi | 0 |
| Sep 20, 2002 | EF3 | 79 km | 112.0 mi | 0 |
| Apr 19, 1996 | EF3 | 79 km | 2.0 mi | 1 |
| Apr 19, 1996 | EF3 | 91 km | 4.0 mi | 0 |
| Nov 22, 1992 | EF3 | 76 km | 5.3 mi | 0 |
| Nov 22, 1992 | EF3 | 54 km | 12.0 mi | 0 |
| Nov 22, 1992 | EF3 | 82 km | 15.0 mi | 0 |
| Mar 10, 1986 | EF3 | 83 km | 35.0 mi | 0 |
| Jun 2, 1980 | EF3 | 72 km | 18.1 mi | 1 |
| Aug 10, 1974 | EF3 | 87 km | 0.1 mi | 0 |
| Aug 10, 1974 | EF3 | 62 km | 0.1 mi | 0 |
| Apr 3, 1974 | EF3 | 71 km | 14.9 mi | 0 |
| Apr 3, 1974 | EF3 | 84 km | 5.9 mi | 1 |
| Apr 3, 1974 | EF3 | 85 km | 25.9 mi | 0 |
| Apr 1, 1974 | EF3 | 91 km | 3.3 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 2.2 in | Coldest, Driest |
| February | 31°F (-1°C) | 2.2 in | |
| March | 42°F (5°C) | 3.5 in | |
| April | 53°F (11°C) | 4.0 in | |
| May | 63°F (17°C) | 4.4 in | |
| June | 72°F (22°C) | 3.9 in | |
| July | 74°F (23°C) | 4.6 in | Warmest, Wettest |
| August | 74°F (23°C) | 3.9 in | |
| September | 67°F (19°C) | 3.3 in | |
| October | 55°F (13°C) | 2.6 in | |
| November | 43°F (6°C) | 3.6 in | |
| December | 32°F (-0°C) | 3.0 in |
St. Mary of the Woods has a seasonal temperature swing of 47°F / from 27°F in January to 74°F in July. Total annual precipitation is 41.2 inches, with July being the wettest month (4.6") and January the driest (2.2").