Weather forecast for tomorrowPrairie du Rocher, IL

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 73°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 4mphSSE 147°
  • Humidity: 55%
  • UV index: 5
  • Sunrise: 7:13 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
Tomorrow, on Monday, October 19, a pleasant, mostly sunny outlook is in place.
Considerable temperature fluctuations from a high of a moderately hot 73.4°F to a low of an icy 41°F are predicted.
Predicted temperatures are trending a few degrees higher than October's climate norm of 67.6°F.
Sunrise will be at 7:13 am and sunset at 6:17 pm; tomorrow's daylight will last for 11h and 4min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 72°C.
Coldest period: 3 am - 6 am 39°C.

Chance of precipitation

Highest chance: 6 am 6%.

Hourly weather forecast

  • 12 am
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 2mphSSE 168°
  • Humidity: 88%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    41°F
Clear
Clear
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 1mphSSE 159°
  • Humidity: 94%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 1mphSSE 156°
  • Humidity: 98%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 1mphSSE 146°
  • Humidity: 99%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:13 am
  • 8 am
  • 43°F
  • Feels like:
    43°F
Sunny
Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 0mphSE 137°
  • Humidity: 95%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphSSE 156°
  • Humidity: 64%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 66°F
  • Feels like:
    66°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphS 170°
  • Humidity: 43%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphSE 145°
  • Humidity: 36%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 72°F
  • Feels like:
    72°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 138°
  • Humidity: 36%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphESE 115°
  • Humidity: 45%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:17 pm
  • 8 pm
  • 55°F
  • Feels like:
    55°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphESE 113°
  • Humidity: 70%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 52°F
  • Feels like:
    52°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 115°
  • Humidity: 81%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, on Monday, primarily sunny and occasionally cloudy weather is predicted.
The temperature will vary between the lowest temperature of 39.2°F and the highest temperature of 71.6°F. The warmest part of the day will be from 2 pm to 4 pm.
The forecasted high will be relatively higher than the typical October maximum of 67.6°F. The minimum temperature will be more alike with November's average low of 38.3°F than October's typical 49.1°F.
Updated: Oct 18, 2026 @ 07:14:24 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Monday, in Prairie du Rocher, a glowing sky and minimal clouds are expected.

Tomorrow, the highest temperature will be 73.4°F, while the lowest temperature will be 41°F.
The maximum temperature will be a few degrees higher than the average highest temperature of 67.6°F in October. The lowest temperature will be also moderately lower than the average low of 49.1°F.

On Monday, in Prairie du Rocher, sunrise will be at 7:13 am and sunset at 6:17 pm (CDT).

In Prairie du Rocher, tomorrow, there will be 11h and 4min of daylight.