Stillman Valley, IL
Full City Profile · Illinois · Ogle County County
4.4
/5.0
A
Great
1,261
Population
2,212/sq mi density
$87,311
Median Income
$37,710 per capita
$168,000
Home Value
$289,366 Zillow
$1,125
Median Rent
21.2% income on rent
49°F
Avg Temperature
A
Overall
4.4 / 5.0
Strong
A+
Economy
4.7 / 5.0
$87,311 median income, 1.3% unemployment
A+
Affordability
5.0 / 5.0
$168,000 home value, $1,125/mo rent
B+
Education
3.6 / 5.0
32.8% bachelor's degree or higher
Stillman Valley 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. Annual precipitation totals 37.2 inches. The area receives 37.1 inches of snow annually.
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) |
Geography
| Elevation | 718 ft (219 m) |
| Area | 0.2 sq mi (0.5 km²) |
| Population Density | 2,212/sq mi |
| Coordinates | 42.1054°N, 89.1790°W |
| Timezone | America/Chicago |
| County | Ogle County County |
| Nearest Airport | Chicago/Rockford International (RFD) 7 miles away |
Precipitation & Snow
Air Quality
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) | 1.6 in | Coldest, Driest |
| February | 26°F (-4°C) | 1.6 in | |
| March | 37°F (3°C) | 2.4 in | |
| April | 49°F (10°C) | 3.8 in | |
| May | 60°F (16°C) | 4.2 in | |
| June | 70°F (21°C) | 5.2 in | Wettest |
| July | 74°F (23°C) | 3.8 in | Warmest |
| August | 72°F (22°C) | 4.2 in | |
| September | 64°F (18°C) | 3.6 in | |
| October | 52°F (11°C) | 2.6 in | |
| November | 39°F (4°C) | 2.3 in | |
| December | 27°F (-3°C) | 1.9 in |
Stillman Valley has a seasonal temperature swing of 52°F / from 22°F in January to 74°F in July. Total annual precipitation is 37.2 inches, with June being the wettest month (5.2") and January the driest (1.6").