Weather forecast for tomorrowOttawa, IL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 12mphSSW 200°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 6:10 pm CDT
- details ▼
Tomorrow, on Sunday, October 18, the outlook remains bright and sunny.
The day's temperature scale will range from a significant high of an enjoyable 66.2°F to a minimum of a cold 37.4°F.
The expected high will be moderately higher than October's standard temperature of 61.7°F.
Sunrise will be at 7:10 am and sunset at 6:10 pm; tomorrow's daylight will last for 10h and 59min.
The day's temperature scale will range from a significant high of an enjoyable 66.2°F to a minimum of a cold 37.4°F.
The expected high will be moderately higher than October's standard temperature of 61.7°F.
Sunrise will be at 7:10 am and sunset at 6:10 pm; tomorrow's daylight will last for 10h and 59min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest period: 3 am - 6 am 39°C.
Coldest period: 3 am - 6 am 39°C.
Chance of precipitation
Highest chance: 6 am 4%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSSW 193°
- Humidity: 79%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:37°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphSSW 193°
- Humidity: 83%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSSW 194°
- Humidity: 84%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSW 194°
- Humidity: 84%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:10 am
- 8 am
- 41°F
- Feels like:37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSW 196°
- Humidity: 80%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:48°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 10mphSSW 202°
- Humidity: 54%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 61°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSSW 205°
- Humidity: 41%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 64°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSSW 204°
- Humidity: 35%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSSW 199°
- Humidity: 33%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphS 183°
- Humidity: 40%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:10 pm
- 8 pm
- 52°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 180°
- Humidity: 56%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:46°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphS 184°
- Humidity: 67%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, bright and mostly sunny weather is expected.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The maximum temperature tomorrow will be moderately higher than October's average high. The minimum temperature will be more close to November's average low of 33.8°F than October's typical 45.7°F.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The maximum temperature tomorrow will be moderately higher than October's average high. The minimum temperature will be more close to November's average low of 33.8°F than October's typical 45.7°F.
Updated: Oct 17, 2026 @ 16:38:41 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Ottawa, the forecast calls for abundant sunshine.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
The highest temperature will be a couple of degrees higher than the average maximum of 61.7°F in October. The lowest temperature will be also a few degrees lower than the average low of 45.7°F.
The highest temperature will be a couple of degrees higher than the average maximum of 61.7°F in October. The lowest temperature will be also a few degrees lower than the average low of 45.7°F.
On Sunday, in Ottawa, sunrise will be at 7:10 am and sunset at 6:10 pm (CDT).
In Ottawa, tomorrow, there will be 10h and 59min of daylight.
