Weather & Climate in Tecumseh, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Tecumseh experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 29°F in January while summers reach 75°F in July. Annual precipitation totals 40.8 inches. The area receives 15.4 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 47. 56% of days have good air quality. The city sits at an elevation of 585 feet.
Temperature
29°F Jan (-2°C)
75°F Jul (24°C)
| Annual Average | 53.5°F |
| 1% below US avg | |
| January Average | 29°F (-2°C) |
| July Average | 75°F (24°C) |
Geography
| Elevation | 585 ft (178 m) |
| Area | 2.6 sq mi (6.7 km²) |
| Population Density | 336/sq mi |
| Coordinates | 39.5699°N, 87.4258°W |
| Timezone | America/Indiana/Indianapolis |
| County | Vigo County County |
| Nearest Airport | Terre Haute Regional (HUF) 10 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 47.0 |
| Rating | Good |
| Good Days % | 55.7% |
| Unhealthy Days | 1 |
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
36 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 | 131 km | 14 km |
| Apr 18, 2008 | 9 km NNE of Bellmont, Illinois | M4.7 | 129 km | 15 km |
| Apr 21, 2008 | 7 km NNE of Bellmont, Illinois | M4.0 | 131 km | 18 km |
| Jun 17, 2021 | Illinois-Indiana border region | M3.8 | 31 km | 6 km |
| Nov 11, 1991 | 3 km W of Flat Rock, Illinois | M3.8 | 78 km | 0 km |
| Sep 19, 2017 | 4 km N of Bellmont, Illinois | M3.8 | 134 km | 12 km |
| Apr 25, 2008 | 8 km NNE of Bellmont, Illinois | M3.7 | 130 km | 13 km |
| Dec 20, 1990 | 5 km S of Stilesville, Indiana | M3.7 | 68 km | 5 km |
| Nov 20, 2012 | 7 km N of Bellmont, Illinois | M3.6 | 131 km | 19 km |
| Apr 14, 2000 | 4 km NW of Heritage Lake, Indiana | M3.6 | 62 km | 5 km |
| Jun 5, 2008 | 8 km WNW of Mount Carmel, Illinois | M3.4 | 129 km | 16 km |
| May 30, 2015 | 4 km ENE of Geff, Illinois | M3.4 | 147 km | 26 km |
| May 1, 2008 | 8 km NNE of Bellmont, Illinois | M3.3 | 130 km | 14 km |
| May 13, 2025 | 7 km SSW of Lerna, Illinois | M3.3 | 81 km | 10 km |
| Dec 17, 1990 | Illinois-Indiana border region | M3.2 | 64 km | 10 km |
| Jul 18, 2008 | 6 km NNE of Bellmont, Illinois | M3.1 | 132 km | 18 km |
| May 10, 2012 | 0 km NW of Emison, Indiana | M3.1 | 85 km | 11 km |
| Dec 16, 1996 | 3 km NNE of Terre Haute, Indiana | M3.1 | 8 km | 5 km |
| Sep 9, 2017 | 4 km N of Bellmont, Illinois | M3.1 | 134 km | 12 km |
| Sep 5, 2004 | 3 km WNW of Saint Peter, Illinois | M2.9 | 147 km | 33 km |
Source: USGS Earthquake Catalog (M2.5+, 1990-2025). Sorted by magnitude.
Tornado History
507 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 46 fatalities, 630 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Apr 11, 1965 | EF4 | 99 km | 21.8 mi | 0 |
| Apr 11, 1965 | EF4 | 69 km | 45.7 mi | 28 |
| Mar 31, 2023 | EF3 | 92 km | 40.9 mi | 6 |
| Mar 31, 2023 | EF3 | 67 km | 5.9 mi | 2 |
| Nov 17, 2013 | EF3 | 83 km | 18.7 mi | 0 |
| Nov 17, 2013 | EF3 | 97 km | 29.8 mi | 0 |
| Nov 17, 2013 | EF3 | 100 km | 37.9 mi | 0 |
| Sep 20, 2002 | EF3 | 79 km | 112.0 mi | 0 |
| Apr 19, 1996 | EF3 | 76 km | 2.0 mi | 1 |
| Apr 19, 1996 | EF3 | 90 km | 4.0 mi | 0 |
| Nov 22, 1992 | EF3 | 80 km | 15.0 mi | 0 |
| Nov 22, 1992 | EF3 | 76 km | 5.3 mi | 0 |
| Nov 22, 1992 | EF3 | 48 km | 12.0 mi | 0 |
| Mar 10, 1986 | EF3 | 81 km | 35.0 mi | 0 |
| Jun 2, 1980 | EF3 | 64 km | 18.1 mi | 1 |
| Aug 10, 1974 | EF3 | 94 km | 0.1 mi | 0 |
| Aug 10, 1974 | EF3 | 65 km | 0.1 mi | 0 |
| Apr 3, 1974 | EF3 | 79 km | 25.9 mi | 0 |
| Apr 3, 1974 | EF3 | 69 km | 14.9 mi | 0 |
| Apr 3, 1974 | EF3 | 83 km | 5.9 mi | 1 |
Source: NOAA Storm Prediction Center (EF0+, 1950-2024, US only).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 29°F (-2°C) | 2.6 in | Coldest |
| February | 33°F (0°C) | 2.0 in | Driest |
| March | 43°F (6°C) | 2.9 in | |
| April | 54°F (12°C) | 4.7 in | Wettest |
| May | 64°F (18°C) | 4.7 in | |
| June | 73°F (23°C) | 4.6 in | |
| July | 75°F (24°C) | 4.3 in | Warmest |
| August | 74°F (23°C) | 3.0 in | |
| September | 67°F (19°C) | 2.9 in | |
| October | 55°F (13°C) | 3.4 in | |
| November | 43°F (6°C) | 3.1 in | |
| December | 34°F (1°C) | 2.5 in |
Tecumseh has a seasonal temperature swing of 47°F / from 29°F in January to 75°F in July. Total annual precipitation is 40.8 inches, with April being the wettest month (4.7") and February the driest (2.0").