Hot-summer humid continental
Seneca, Illinois
LaSalle County, Illinois · Population 2.5k · 515 ft elevation
Living in Seneca
Seneca has a hot-summer humid continental climate: hot summers (July highs around 84°F) and cold winters (January lows around 14°F).
Precipitation is wet at about 39″ a year, and it gets light snow (25″ a season).
Skies are partly sunny (59% of possible sunshine). Summers get sticky, with about 36 muggy days a year.
Air quality is moderate: a median AQI of 44, with about 5 unhealthy-air days in the latest year.
Seneca at a glance
- Population
- 2.5k
- Elevation
- 515 ft
- Average daily high
- 60°F18th percentile
- Average daily low
- 39°F15th percentile
- Annual precipitation
- 39″35th percentile
- Annual snowfall
- 25″64th percentile
- Sunshine hours per year
- 2,656 hrs32th percentile
- Median AQI
- 4462th percentile
- Median home value
- $206k36th percentile
- Median rent
- $988/mo33th percentile
- Median household income
- $91k67th percentile
- Property tax rate
- 1.61%78th percentile
- Top state income-tax rate
- 5.0%
- Sales tax (state + local)
- 8.9%
- Unemployment rate
- 4.2%
- Homes with broadband
- 92%55th percentile
- Walkability index
- 6.416th percentile
- Average commute
- 30 min
- Math proficiency (8th grade)
- 32%26th percentile
- Reading proficiency (8th grade)
- 27%
- Violent crime rate
- 217 per 100k59th percentile
- Property crime rate
- 826 per 100k
- Overall natural-hazard risk
- 8641th percentile
- Outdoor access
- 33th percentile
- Public land within 10 miles
- 0%
- Public land within 30 miles
- 1%
- Mountain relief within 30 miles
- 197 ft
Climate by month
| Month | High | Low | Precipitation | Snow | Sunshine |
|---|---|---|---|---|---|
| Jan | 31°F | 14°F | 1.9″ | 8.4″ | 131 hrs |
| Feb | 35°F | 17°F | 1.9″ | 7.3″ | 148 hrs |
| Mar | 47°F | 27°F | 2.5″ | 2.9″ | 194 hrs |
| Apr | 61°F | 37°F | 3.6″ | 0.3″ | 227 hrs |
| May | 73°F | 48°F | 4.7″ | — | 264 hrs |
| Jun | 81°F | 58°F | 4.9″ | — | 305 hrs |
| Jul | 84°F | 62°F | 3.9″ | — | 334 hrs |
| Aug | 82°F | 60°F | 4.1″ | — | 305 hrs |
| Sep | 77°F | 53°F | 3.5″ | — | 266 hrs |
| Oct | 64°F | 41°F | 3.2″ | — | 200 hrs |
| Nov | 49°F | 30°F | 2.7″ | 0.8″ | 156 hrs |
| Dec | 37°F | 20°F | 2.1″ | 5.3″ | 127 hrs |
Near Seneca
- Marseilles, IL · 4.1k
- Morris, IL · 15k
- Ottawa, IL · 19k
- Sheridan, IL · 2.6k
- Streator, IL · 12k
- Dwight, IL · 3.8k
- Coal City, IL · 5.1k
- Diamond, IL · 2.9k
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