Weather forecast for 10 days
Ottawa, IL

Weather forecast for the weekend

Sunday, Jun 15.

Mostly Cloudy
5:19 am

8:32 pm
CDT
Mostly Cloudy
86°F / 63°F
  • Wind: 9mph E
  • Humidity: 54%
  • Precip. probability: 1%
  • Precipitation: 0"
  • UV index: 8
Today, a thick layer of clouds will dominate the sky.
Temperature span will be from a high of a hot 86°F to a low of a breezy 62.6°F.
The maximum heat index, which combines relative humidity and air temperature, is computed to be a blazing 89.6°F. Note that heat index values are valued for light wind and location in the shade.
The projected high resembles July more than June, matching 81°F rather than 78.8°F.
Sunrise was at 5:19 am and sunset will be at 8:32 pm; the daylight will last for 15h and 13min.

Frequently asked questions

What is the weather forecast for Ottawa for the next ten days?
In Ottawa, a combination of dull, sunny and turbulent weather is predicted for the next ten days.
Will it rain in the next ten days?
Rainfall is expected on Tuesday, Wednesday, next Monday and Tuesday in Ottawa. With elevated precipitation of 0.94", Wednesday will be the day with the most rainfall.
How hot will it be in the next ten days?
The maximum temperature will vary between 82.4°F and 93.2°F, while the minimum temperature will range between 62.6°F and 73.4°F.
Combining with the humidity, the maximum feel-like temperature will vary between 86°F and 109.4°F.
What will be the hottest and the coldest days?
The hottest days will be Saturday and next Sunday, with a maximum of 93.2°F. With a maximum temperature of 82.4°F, Wednesday and next Tuesday will be the coldest days.

Long-term weather forecast

SunJun 15.
  • 86°F
  • 63°F
Mostly Cloudy
Mostly Cloudy
  • Wind: 9mph E
  • Humidity: 54%
  • UV index: 8
  • Precip. probability: 1%
  • Precipitation: 0"
  • 5:19 am 8:32 pm CDT
MonJun 16.
  • 88°F
  • 68°F
Partly Cloudy
Partly Cloudy
  • Wind: 7mph ESE
  • Humidity: 55%
  • UV index: 9
  • Precip. probability: 4%
  • Precipitation: 0"
  • 5:19 am 8:32 pm CDT
TueJun 17.
  • 91°F
  • 70°F
Partly Cloudy
Partly Cloudy
  • Wind: 11mph SW
  • Humidity: 62%
  • UV index: 9
  • Precip. probability: 19%
  • Precipitation: 0.63"
  • 5:19 am 8:32 pm CDT
WedJun 18.
  • 82°F
  • 64°F
Scattered Thunderstorms
Scattered Thunderstorms
  • Wind: 14mph SW
  • Humidity: 76%
  • UV index: 6
  • Precip. probability: 56%
  • Precipitation: 0.94"
  • 5:20 am 8:33 pm CDT
ThuJun 19.
  • 84°F
  • 64°F
Mostly Sunny
Mostly Sunny
  • Wind: 13mph WNW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 17%
  • Precipitation: 0"
  • 5:20 am 8:33 pm CDT
FriJun 20.
  • 88°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 13mph SSW
  • Humidity: 61%
  • UV index: 9
  • Precip. probability: 10%
  • Precipitation: 0"
  • 5:20 am 8:33 pm CDT
SatJun 21.
  • 93°F
  • 73°F
Mostly Sunny
Mostly Sunny
  • Wind: 17mph SSW
  • Humidity: 63%
  • UV index: 9
  • Precip. probability: 9%
  • Precipitation: 0"
  • 5:20 am 8:33 pm CDT
SunJun 22.
  • 93°F
  • 73°F
Sunny
Sunny
  • Wind: 16mph SSW
  • Humidity: 58%
  • UV index: 9
  • Precip. probability: 11%
  • Precipitation: 0"
  • 5:20 am 8:34 pm CDT
MonJun 23.
  • 88°F
  • 66°F
Isolated Thunderstorms
Isolated Thunderstorms
  • Wind: 15mph SW
  • Humidity: 61%
  • UV index: 9
  • Precip. probability: 33%
  • Precipitation: 0.2"
  • 5:21 am 8:34 pm CDT
TueJun 24.
  • 82°F
  • 63°F
Partly Cloudy
Partly Cloudy
  • Wind: 10mph NNE
  • Humidity: 63%
  • UV index: 8
  • Precip. probability: 24%
  • Precipitation: 0.04"
  • 5:21 am 8:34 pm CDT
During the ten-day period, cloudy, bright and thunderstorm-prone weather is expected.
Rainfall is expected on Tuesday, Wednesday, next Monday and Tuesday.
In the upcoming period, the maximum temperature will range between 82.4°F and 93.2°F, while the minimum temperature is forecast to range between 62.6°F and 73.4°F.
The hottest days will be Saturday and next Sunday, with a maximum of 93.2°F; Wednesday and next Tuesday, with the highest temperature of 82.4°F, will be the coldest days.
Including the humidity's impact, the maximum feel-like temperature may increase greatly and vary between a humid 86°F and an extremely hot 109.4°F.
Updated: Jun 15, 2025 @ 14:20:48 UTC
Published by: Weather U.S. | About Us
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