Hot-summer humid continental
Rock Island, Illinois
Rock Island County, Illinois · Population 37k · 564 ft elevation
Living in Rock Island
Rock Island has a hot-summer humid continental climate: hot summers (July highs around 86°F) and cold winters (January lows around 15°F).
Precipitation is wet at about 38″ a year, and it gets a fair bit of snow (36″ a season).
Skies are sunny (60% of possible sunshine). Summers get sticky, with about 38 muggy days a year.
Air quality is moderate: a median AQI of 41, with about 2 unhealthy-air days in the latest year.
Rock Island at a glance
- Population
- 37k
- Elevation
- 564 ft
- Average daily high
- 62°F30th percentile
- Average daily low
- 41°F25th percentile
- Annual precipitation
- 38″32th percentile
- Annual snowfall
- 36″76th percentile
- Sunshine hours per year
- 2,723 hrs42th percentile
- Median AQI
- 4144th percentile
- Median home value
- $118k10th percentile
- Median rent
- $819/mo15th percentile
- Median household income
- $57k26th percentile
- Property tax rate
- 2.42%95th percentile
- Top state income-tax rate
- 5.0%
- Sales tax (state + local)
- 8.9%
- Unemployment rate
- 6.5%
- Homes with broadband
- 87%27th percentile
- Walkability index
- 8.142th percentile
- Average commute
- 20 min
- Math proficiency (8th grade)
- 13%5th percentile
- Reading proficiency (8th grade)
- 24%
- Violent crime rate
- 606 per 100k92th percentile
- Property crime rate
- 2,461 per 100k
- Overall natural-hazard risk
- 8438th percentile
- Outdoor access
- 99th percentile
- Public land within 10 miles
- 1%
- Public land within 30 miles
- 1%
- Mountain relief within 30 miles
- 230 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 32°F | 15°F | 1.7″ | 10.8″ | 142 hrs |
| Feb | 37°F | 19°F | 1.8″ | 8.6″ | 167 hrs |
| Mar | 50°F | 30°F | 2.6″ | 4.4″ | 204 hrs |
| Apr | 63°F | 40°F | 3.8″ | 1.1″ | 227 hrs |
| May | 74°F | 51°F | 4.7″ | — | 268 hrs |
| Jun | 83°F | 61°F | 5.0″ | — | 306 hrs |
| Jul | 86°F | 65°F | 4.2″ | — | 336 hrs |
| Aug | 84°F | 63°F | 4.0″ | — | 308 hrs |
| Sep | 78°F | 54°F | 3.3″ | — | 268 hrs |
| Oct | 65°F | 43°F | 2.8″ | 0.3″ | 202 hrs |
| Nov | 50°F | 31°F | 2.3″ | 2.1″ | 164 hrs |
| Dec | 37°F | 21°F | 2.0″ | 8.8″ | 133 hrs |
Near Rock Island
- Milan, IL · 5k
- Moline, IL · 42k
- Coal Valley, IL · 4.1k
- Silvis, IL · 7.9k
- East Moline, IL · 21k
- Colona, IL · 5.2k
- Aledo, IL · 3.8k
- Geneseo, IL · 6.6k
Largest places in Illinois
- Chicago, IL · 2.7M
- Aurora, IL · 180k
- Joliet, IL · 150k
- Naperville, IL · 149k
- Rockford, IL · 148k
- Elgin, IL · 114k
- Springfield, IL · 114k
- Peoria, IL · 112k
Sources: NOAA climate normals, NASA POWER, EPA air quality, U.S. Census Bureau, FEMA, FBI, EPA walkability and EDFacts. Methodology