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Weather & Climate in Willow Branch, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Willow Branch 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 47.8 inches (wetter than the 38-inch national average). The area receives 20.2 inches of snow annually, a moderate snowfall amount. Air quality is rated Good with a median AQI of 41. The city sits at an elevation of 937 feet.
Temperature
27°F Jan (-3°C)
74°F Jul (23°C)
| Annual Average | 51.9°F |
| 4% below US avg | |
| January Average | 27°F (-3°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 293 days/yr |
Geography
| Elevation | 937 ft (286 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 1,843/sq mi |
| Coordinates | 39.8768°N, 85.6849°W |
| Timezone | America/Indiana/Indianapolis |
| County | Hancock County County |
| Nearest Airport | Delaware County Regional (MIE) 30 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 44.0 / 100 |
| Social Vulnerability | 10.6 / 100 |
| Community Resilience | 89.8 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Low |
| Strong Wind | Relatively Low |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Low |
| Cold Wave | Relatively Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
9 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jun 17, 2021 | Illinois-Indiana border region | M3.8 | 137 km | 6 km |
| Sep 12, 2004 | 4 km NW of Manilla, Indiana | M3.8 | 30 km | 2 km |
| Dec 20, 1990 | 5 km S of Stilesville, Indiana | M3.7 | 87 km | 5 km |
| Apr 14, 2000 | 4 km NW of Heritage Lake, Indiana | M3.6 | 92 km | 5 km |
| Dec 17, 1990 | Illinois-Indiana border region | M3.2 | 118 km | 10 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 96 km | 5 km |
| Apr 4, 1994 | 2 km WNW of Minster, Ohio | M2.9 | 124 km | 5 km |
| Jun 12, 2015 | 6 km NW of Convoy, Ohio | M2.6 | 143 km | 5 km |
| Jan 30, 2004 | 2 km S of Rockford, Ohio | M2.5 | 124 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
568 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 50 fatalities, 1,595 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 11, 1998 | EF4 | 25 km | 13.2 mi | 0 |
| Jun 2, 1990 | EF4 | 98 km | 33.0 mi | 0 |
| Jul 9, 1980 | EF4 | 34 km | 11.0 mi | 2 |
| Apr 3, 1974 | EF4 | 40 km | 18.0 mi | 1 |
| Apr 3, 1974 | EF4 | 83 km | 35.6 mi | 4 |
| Apr 3, 1974 | EF4 | 14 km | 18.9 mi | 0 |
| May 14, 1972 | EF4 | 36 km | 30.0 mi | 0 |
| Apr 11, 1965 | EF4 | 79 km | 52.5 mi | 4 |
| Apr 11, 1965 | EF4 | 83 km | 48.0 mi | 25 |
| Apr 25, 1961 | EF4 | 34 km | 63.1 mi | 0 |
| Mar 6, 1956 | EF4 | 78 km | 1.9 mi | 1 |
| Mar 14, 2024 | EF3 | 58 km | 41.3 mi | 1 |
| Mar 31, 2023 | EF3 | 52 km | 5.5 mi | 0 |
| Mar 31, 2023 | EF3 | 68 km | 6.4 mi | 0 |
| May 27, 2019 | EF3 | 82 km | 12.8 mi | 0 |
| Aug 24, 2016 | EF3 | 78 km | 8.6 mi | 0 |
| Mar 2, 2012 | EF3 | 93 km | 8.7 mi | 3 |
| Jun 5, 2010 | EF3 | 95 km | 7.5 mi | 0 |
| Jun 3, 2008 | EF3 | 46 km | 9.7 mi | 1 |
| Nov 15, 2005 | EF3 | 63 km | 10.0 mi | 0 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
6 wildfires (100+ acres) recorded within 100 km. Largest: UNNAMED (1,547 acres, 2021).
| Year | Name | Acres Burned | Distance |
| 2021 | UNNAMED | 1,547 | 97 km |
| 2007 | UNNAMED | 1,102 | 69 km |
| 2004 | UNIT 30 | 938 | 99 km |
| 2016 | UNNAMED | 898 | 98 km |
| 2002 | UNIT 1 | 707 | 100 km |
| 2004 | UNIT 1 | 669 | 100 km |
Source: NIFC/IRWIN Wildfire Records (100+ acres).
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 27°F (-3°C) | 2.2 in | Coldest, Driest |
| February | 29°F (-2°C) | 2.3 in | |
| March | 39°F (4°C) | 3.3 in | |
| April | 50°F (10°C) | 3.9 in | |
| May | 61°F (16°C) | 4.3 in | |
| June | 70°F (21°C) | 4.0 in | |
| July | 74°F (23°C) | 4.5 in | Warmest, Wettest |
| August | 72°F (22°C) | 3.7 in | |
| September | 65°F (18°C) | 3.0 in | |
| October | 53°F (12°C) | 2.9 in | |
| November | 42°F (6°C) | 3.6 in | |
| December | 31°F (-1°C) | 3.0 in |
Willow Branch has a seasonal temperature swing of 48°F / from 27°F in January to 74°F in July. Total annual precipitation is 40.5 inches, with July being the wettest month (4.5") and January the driest (2.2").