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Weather & Climate in Zionsville, IN
Temperature, precipitation, air quality, natural hazards, and monthly weather data.
Zionsville 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 41.3 inches. The area receives 22.0 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 925 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 | 925 ft (282 m) |
| Area | 67.2 sq mi (174.0 km²) |
| Population Density | 468/sq mi |
| Coordinates | 39.9915°N, 86.3218°W |
| Timezone | America/Indiana/Indianapolis |
| County | Marion County County |
| Nearest Airport | Indianapolis International (IND) 19 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 41.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively High |
| Risk Score | 97.5 / 100 |
| Social Vulnerability | 39.7 / 100 |
| Community Resilience | 49.4 / 100 |
Hazard Breakdown
| Tornado | Very High |
| Hurricane | Very Low |
| Earthquake | Relatively Moderate |
| Wildfire | Very Low |
| Flood | Relatively High |
| Hail | Relatively Moderate |
| Strong Wind | Very High |
| Heat Wave | Relatively High |
| Winter Weather | Relatively High |
| Lightning | Very High |
| Ice Storm | Relatively High |
| Drought | Relatively Low |
| Cold Wave | Relatively High |
| Landslide | Relatively Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Earthquake History
7 earthquakes (M2.5+) recorded within 150 km since 1990. Strongest on record: M3.8.
| Jun 17, 2021 | Illinois-Indiana border region | M3.8 | 84 km | 6 km |
| Sep 12, 2004 | 4 km NW of Manilla, Indiana | M3.8 | 71 km | 2 km |
| Dec 20, 1990 | 5 km S of Stilesville, Indiana | M3.7 | 52 km | 5 km |
| Apr 14, 2000 | 4 km NW of Heritage Lake, Indiana | M3.6 | 45 km | 5 km |
| Dec 17, 1990 | Illinois-Indiana border region | M3.2 | 62 km | 10 km |
| Dec 16, 1996 | 3 km NNE of Terre Haute, Indiana | M3.1 | 107 km | 5 km |
| Apr 17, 1990 | 8 km NW of Fort Recovery, Ohio | M3.0 | 135 km | 5 km |
Source: USGS Earthquake Catalog (M2.5+, 1990–2025). Sorted by magnitude.
Tornado History
622 tornadoes (EF0+) recorded within 100 km since 1950. Strongest on record: EF4. Total: 93 fatalities, 2,015 injuries.
| Date | Rating | Distance | Path | Fatalities |
| Jun 11, 1998 | EF4 | 40 km | 13.2 mi | 0 |
| Apr 26, 1994 | EF4 | 76 km | 14.0 mi | 3 |
| Jul 9, 1980 | EF4 | 83 km | 11.0 mi | 2 |
| Mar 20, 1976 | EF4 | 78 km | 16.7 mi | 0 |
| Apr 3, 1974 | EF4 | 89 km | 108.7 mi | 18 |
| Apr 3, 1974 | EF4 | 63 km | 18.9 mi | 0 |
| Apr 3, 1974 | EF4 | 90 km | 18.0 mi | 1 |
| May 14, 1972 | EF4 | 32 km | 30.0 mi | 0 |
| Apr 11, 1965 | EF4 | 47 km | 45.7 mi | 28 |
| Apr 11, 1965 | EF4 | 46 km | 48.0 mi | 25 |
| Apr 11, 1965 | EF4 | 57 km | 21.8 mi | 0 |
| Apr 25, 1961 | EF4 | 64 km | 63.1 mi | 0 |
| Mar 6, 1956 | EF4 | 91 km | 1.9 mi | 1 |
| Mar 31, 2023 | EF3 | 85 km | 5.9 mi | 2 |
| Mar 31, 2023 | EF3 | 54 km | 5.5 mi | 0 |
| Mar 31, 2023 | EF3 | 82 km | 6.4 mi | 0 |
| Aug 24, 2016 | EF3 | 53 km | 8.6 mi | 0 |
| Nov 17, 2013 | EF3 | 59 km | 37.9 mi | 0 |
| Jun 5, 2010 | EF3 | 73 km | 7.5 mi | 0 |
| Jun 3, 2008 | EF3 | 81 km | 9.7 mi | 1 |
Source: NOAA Storm Prediction Center (EF0+, 1950–2024, US only).
Wildfire History
3 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 | 78 km |
| 2016 | UNNAMED | 898 | 97 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 | 30°F (-1°C) | 2.2 in | |
| March | 40°F (5°C) | 3.3 in | |
| April | 51°F (11°C) | 3.8 in | |
| May | 62°F (16°C) | 4.3 in | |
| June | 71°F (22°C) | 3.8 in | |
| July | 74°F (23°C) | 4.5 in | Warmest, Wettest |
| August | 73°F (23°C) | 3.7 in | |
| September | 66°F (19°C) | 3.0 in | |
| October | 54°F (12°C) | 2.8 in | |
| November | 42°F (6°C) | 3.5 in | |
| December | 31°F (-0°C) | 3.0 in |
Zionsville has a seasonal temperature swing of 47°F / from 27°F in January to 74°F in July. Total annual precipitation is 40.2 inches, with July being the wettest month (4.5") and January the driest (2.2").