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Holcomb, IL
Full City Profile · Illinois · Ogle County County
3.2
/5.0
B
Good
175
Population
1,944/sq mi density
$54,250
Median Income
$22,637 per capita
$130,500
Home Value
$268,075 Zillow
$960
Median Rent
35.8% income on rent
49°F
Avg Temperature
260 sunny days/yr
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.6 / 5.0
$54,250 median income, 0.0% unemployment
A+
Affordability
5.0 / 5.0
$130,500 home value, $960/mo rent
C+
Safety
2.5 / 5.0
0 violent crimes/100K
D
Education
1.7 / 5.0
8.2% bachelor's degree or higher
Holcomb experiences four distinct seasons with an average annual temperature of 49°F (9°C). Winters average 22°F in January while summers reach 74°F in July. The area gets 260 sunny days per year. Annual precipitation totals 37.2 inches. The area receives 37.1 inches of snow annually. Air quality is rated Good with a median AQI of 43.
Temperature
22°F Jan (-6°C)
74°F Jul (23°C)
| Annual Average | 49.4°F |
| 9% below US avg | |
| January Average | 22°F (-6°C) |
| July Average | 74°F (23°C) |
| Sunny Days | 260 days/yr |
Geography
| Elevation | 847 ft (258 m) |
| Area | 0.1 sq mi (0.2 km²) |
| Population Density | 1,944/sq mi |
| Coordinates | 42.0645°N, 89.0970°W |
| Timezone | America/Chicago |
| County | Ogle County County |
| Nearest Airport | Chicago/Rockford International (RFD) 9 miles away |
Precipitation & Snow
Air Quality
| AQI Median | 43.0 |
| Rating | Good |
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 71.1 / 100 |
| Social Vulnerability | 17.5 / 100 |
| Community Resilience | 86.1 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Moderate |
| Hail | Relatively Moderate |
| Strong Wind | Relatively Moderate |
| Heat Wave | Relatively Low |
| Winter Weather | Very Low |
| Lightning | Relatively Low |
| Ice Storm | Relatively Low |
| Drought | Relatively Moderate |
| Cold Wave | Relatively Moderate |
| Landslide | Very Low |
Source: FEMA National Risk Index v1.20 (Dec 2025)
Monthly Weather
| Month | Avg Temperature | Precipitation | Summary |
|---|---|---|---|
| January | 22°F (-6°C) | 1.4 in | Coldest |
| February | 24°F (-5°C) | 1.1 in | Driest |
| March | 35°F (2°C) | 2.4 in | |
| April | 48°F (9°C) | 3.7 in | |
| May | 59°F (15°C) | 3.8 in | |
| June | 69°F (20°C) | 4.5 in | Wettest |
| July | 74°F (23°C) | 4.0 in | Warmest |
| August | 70°F (21°C) | 4.1 in | |
| September | 63°F (17°C) | 3.9 in | |
| October | 51°F (11°C) | 2.8 in | |
| November | 37°F (3°C) | 2.7 in | |
| December | 25°F (-4°C) | 2.1 in |
Holcomb has a seasonal temperature swing of 52°F / from 22°F in January to 74°F in July. Total annual precipitation is 36.3 inches, with June being the wettest month (4.5") and February the driest (1.1").