Ontario, IL
Unincorporated community in Knox County, Illinois
Ontario is a small unincorporated community in Knox County, Illinois. It is 4.1 miles SE of Wataga, the nearest town. Its ZIP code is 61488.
Ontario at a glance
- State
- Illinois
- County
- Knox County
- ZIP code
- 61488
- Nearest town
- Wataga (4.1 mi)
- Time zone
- America/Chicago
- Coordinates
- 41.0786, -90.3075
Weather in Ontario now
Loading the National Weather Service forecast…
Ontario weather by the hour
Ontario weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Ontario.
This week in Ontario
Sunrise, sunset and moon in Ontario
What is the weather usually like in Ontario?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 83°F average high
- Januarycoldest month · 13°F average low
- 39.4 inprecipitation per year · 1,000 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Ontario: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station ALTONA, IL US (USC00110140), adjusted for the elevation of Ontario.
Ontario weather month by month
Sunrise and sunset in Ontario through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:22 AM | 4:59 PM | 9 h 36 min |
| February | 6:53 AM | 5:36 PM | 10 h 43 min |
| March | 7:10 AM | 7:09 PM | 11 h 58 min |
| April | 6:19 AM | 7:42 PM | 13 h 22 min |
| May | 5:41 AM | 8:13 PM | 14 h 32 min |
| June | 5:26 AM | 8:37 PM | 15 h 10 min |
| July | 5:40 AM | 8:33 PM | 14 h 53 min |
| August | 6:09 AM | 8:01 PM | 13 h 51 min |
| September | 6:40 AM | 7:12 PM | 12 h 31 min |
| October | 7:11 AM | 6:22 PM | 11 h 10 min |
| November | 6:47 AM | 4:43 PM | 9 h 56 min |
| December | 7:17 AM | 4:35 PM | 9 h 17 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Ontario?
Ontario has a hot-summer humid continental climate. The warmest month is July, with an average high of 83°F (29°C), and the coldest is January, with average lows of 13°F (-11°C).
It gets about 39.4 inches (1,000 mm) of precipitation a year. The wettest month is May and the driest is January.
The best time to visit Ontario is May–June and August–September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Ontario
The closest live webcam is Coal Valley › East: Quad Cities International Airport, 27.2 miles NW of Ontario.
Webcams: Windy.com. Distances in a straight line from Ontario.
Do you know Ontario? Tell us about it
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Map of Ontario, IL
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Ontario Street View
Drag the image to look around and tap the arrows on the ground to move. If it says there is no imagery, tap a nearby street on the map above.
Open in Google Maps ›Towns near Ontario
Other communities near Ontario
Questions about Ontario
Where is Ontario, IL?
Ontario is an unincorporated community in Knox County, Illinois, 4.1 miles SE of Wataga.
What county is Ontario in?
Ontario is in Knox County, Illinois.
What is the ZIP code of Ontario, IL?
The ZIP code for Ontario is 61488.
What is the nearest town to Ontario?
Wataga, 4.1 miles away.
Are there webcams near Ontario?
Yes. The closest is Coal Valley › East: Quad Cities International Airport, 27.2 miles away.
What is the hottest month in Ontario?
July, with an average high of 83°F (29°C).
What is the coldest month in Ontario?
January, with an average low of 13°F (-11°C).
How much does it rain in Ontario?
About 39.4 inches (1,000 mm) a year; the wettest month is May.
Does it snow in Ontario?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Ontario?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Ontario have?
Hot-summer humid continental (Köppen Dfa).
Last updated: