Harrison Lake, IN
Full City Profile · Indiana · Brown County County
5.0
/5.0
A+
Excellent
193
Population
715/sq mi density
$788,200
Home Value
$272,715 Zillow
54°F
Avg Temperature
A+
Overall
5.0 / 5.0
Strong
A+
Education
5.0 / 5.0
83.9% bachelor's degree or higher
Harrison Lake experiences four distinct seasons with an average annual temperature of 54°F (12°C). Winters average 30°F in January while summers reach 76°F in July. Annual precipitation totals 47.3 inches. The area receives 16.3 inches of snow annually. Air quality is rated Good with a median AQI of 37.
Temperature
30°F Jan (-1°C)
76°F Jul (24°C)
| Annual Average | 54.1°F |
| 0% below US avg | |
| January Average | 30°F (-1°C) |
| July Average | 76°F (24°C) |
Geography
| Elevation | 710 ft (216 m) |
| Area | 0.3 sq mi (0.7 km²) |
| Population Density | 715/sq mi |
| Coordinates | 39.1845°N, 86.0262°W |
| Timezone | America/Indiana/Indianapolis |
| County | Brown County County |
| Nearest Airport | Indianapolis International (IND) 40 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 37.0 |
| Rating | Good |
| Good Days % | 94.4% |
| Unhealthy Days | 0 |
Air Pollutants (EPA 2023)
| Ozone (O₃) | 0.0458 ppm |
Natural Hazard Risk
| Overall Risk | Very Low |
| Risk Score | 19.7 / 100 |
| Social Vulnerability | 47.4 / 100 |
| Community Resilience | 59.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Low |
| Hurricane | Very Low |
| Earthquake | Very Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Very Low |
| Strong Wind | Relatively Low |
| Heat Wave | Very Low |
| Winter Weather | Relatively Low |
| Lightning | Very Low |
| Ice Storm | Relatively Moderate |
| Drought | Very Low |
| Cold Wave | Very Low |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 30°F (-1°C) | 3.4 in | Coldest |
| February | 33°F (1°C) | 2.9 in | Driest |
| March | 43°F (6°C) | 3.8 in | |
| April | 54°F (12°C) | 5.0 in | |
| May | 64°F (18°C) | 5.0 in | |
| June | 73°F (23°C) | 5.3 in | Wettest |
| July | 76°F (24°C) | 4.5 in | Warmest |
| August | 74°F (24°C) | 3.5 in | |
| September | 68°F (20°C) | 3.2 in | |
| October | 56°F (13°C) | 3.4 in | |
| November | 44°F (7°C) | 3.6 in | |
| December | 35°F (1°C) | 3.7 in |
Harrison Lake has a seasonal temperature swing of 46°F / from 30°F in January to 76°F in July. Total annual precipitation is 47.3 inches, with June being the wettest month (5.3") and February the driest (2.9").