Prophetstown, IL
Full City Profile · Illinois · Whiteside County County
3.5
/5.0
B+
Good
1,828
Population
1,364/sq mi density
$66,797
Median Income
$35,452 per capita
$116,300
Home Value
$170,712 Zillow
$704
Median Rent
27.8% income on rent
48°F
Avg Temperature
B+
Overall
3.5 / 5.0
Good overall score based on economy, affordability, safety and education
B+
Economy
3.5 / 5.0
$66,797 median income, 7.1% unemployment
A+
Affordability
5.0 / 5.0
$116,300 home value, $704/mo rent
C
Education
2.1 / 5.0
14.1% bachelor's degree or higher
Prophetstown experiences four distinct seasons with an average annual temperature of 48°F (9°C). Winters average 20°F in January while summers reach 73°F in July. Annual precipitation totals 39.7 inches. The area receives 29.6 inches of snow annually.
Temperature
20°F Jan (-6°C)
73°F Jul (23°C)
| Annual Average | 48.3°F |
| 11% below US avg | |
| January Average | 20°F (-6°C) |
| July Average | 73°F (23°C) |
Geography
| Elevation | 634 ft (193 m) |
| Area | 1.3 sq mi (3.5 km²) |
| Population Density | 1,364/sq mi |
| Coordinates | 41.6697°N, 89.9347°W |
| Timezone | America/Chicago |
| County | Whiteside County County |
| Nearest Airport | Quad Cities International (MLI) 33 miles away |
Precipitation & Snow
Air Quality
Natural Hazard Risk
| Overall Risk | Relatively Low |
| Risk Score | 65.8 / 100 |
| Social Vulnerability | 43.6 / 100 |
| Community Resilience | 81.7 / 100 |
Hazard Breakdown
| Tornado | Relatively Moderate |
| Hurricane | Very Low |
| Earthquake | Relatively Low |
| Wildfire | Very Low |
| Flood | Relatively Low |
| Hail | Relatively Moderate |
| Strong Wind | Relatively High |
| Heat Wave | Relatively Low |
| Winter Weather | Relatively Moderate |
| Lightning | Relatively Low |
| Ice Storm | Relatively Moderate |
| 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 | 20°F (-6°C) | 1.7 in | Coldest, Driest |
| February | 25°F (-4°C) | 1.7 in | |
| March | 36°F (2°C) | 2.7 in | |
| April | 48°F (9°C) | 3.8 in | |
| May | 60°F (15°C) | 4.6 in | |
| June | 69°F (21°C) | 5.0 in | Wettest |
| July | 73°F (23°C) | 4.6 in | Warmest |
| August | 70°F (21°C) | 4.3 in | |
| September | 63°F (17°C) | 3.7 in | |
| October | 51°F (10°C) | 3.1 in | |
| November | 38°F (3°C) | 2.4 in | |
| December | 26°F (-3°C) | 2.1 in |
Prophetstown has a seasonal temperature swing of 52°F / from 20°F in January to 73°F in July. Total annual precipitation is 39.7 inches, with June being the wettest month (5.0") and January the driest (1.7").