Weather forecast for 10 daysLanark, IL
Weather forecast for the weekend
Saturday Oct 17, 2026
- 55°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphSW 221°
- Humidity: 40%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:14 pm CDT
- details ▼
Today, on Saturday, October 17, the weather remains calm, bright, and sunny.
Temperature is expected to swing from a high of a moderate 55.4°F to a low of an icy 39.2°F.
Today, the forecasted temperature will be moderately lower than the standard October high of 59.4°F.
Sunrise was at 7:14 am and sunset will be at 6:14 pm; the daylight will last for 11h and 0min.
Temperature is expected to swing from a high of a moderate 55.4°F to a low of an icy 39.2°F.
Today, the forecasted temperature will be moderately lower than the standard October high of 59.4°F.
Sunrise was at 7:14 am and sunset will be at 6:14 pm; the daylight will last for 11h and 0min.
Sunday Oct 18, 2026
- 64°F
- 39°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 15mphSSW 202°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:15 am CDT
- Sunset: 6:13 pm CDT
- details ▼
Tomorrow, on Sunday, conditions remain stable and sunny, with little cloud presence.
Temperature span will be from a high of an enjoyable 64.4°F to a low of a wintry 39.2°F.
The day’s top temperature is expected to be a couple of degrees higher than the typical October high of 59.4°F.
Sunrise will be at 7:15 am and sunset at 6:13 pm; tomorrow's daylight will last for 10h and 58min.
Temperature span will be from a high of an enjoyable 64.4°F to a low of a wintry 39.2°F.
The day’s top temperature is expected to be a couple of degrees higher than the typical October high of 59.4°F.
Sunrise will be at 7:15 am and sunset at 6:13 pm; tomorrow's daylight will last for 10h and 58min.
10-day overview
Daily temperatures
Warmest period: Thursday - Saturday 73°C.
Coldest day: today 55°C.
Coldest day: today 55°C.
Chance of precipitation
Highest chance: Monday 26.10. 19%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- 55°F
- 39°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 9mphSW 221°
- Humidity: 40%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 64°F
- 39°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 15mphSSW 202°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:15 am CDT
- Sunset: 6:13 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 68°F
- 39°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphS 182°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 45°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphSE 141°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:18 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 45°F
Mostly Sunny
- Precip. probability: 10%
- Precipitation: 0"
- Wind: 6mphS 187°
- Humidity: 61%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 73°F
- 45°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSSE 148°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:20 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 73°F
- 48°F
Mostly Sunny
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 7mphSE 132°
- Humidity: 61%
- UV index: 3
- Sunrise: 7:21 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 73°F
- 50°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 10mphSSE 152°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:22 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphSW 220°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:23 am CDT
- Sunset: 6:02 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 70°F
- 48°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 6mphNE 51°
- Humidity: 67%
- UV index: 3
- Sunrise: 7:25 am CDT
- Sunset: 6:01 pm CDT
- details ▼
For the coming ten days, a combination of mostly clear and cloudy weather is expected.
Rainfall is not forecasted in Lanark in the upcoming period.
Temperature differences will be noticeable in the next ten days. Forecast highs will fluctuate between 55.4°F and 73.4°F, while the low temperature range extends from 39.2°F to 50°F.
Thursday through next Saturday, with the highest temperature of 73.4°F, will be the warmest days in Lanark; today is the coldest day, with a maximum temperature of 55.4°F.
Rainfall is not forecasted in Lanark in the upcoming period.
Temperature differences will be noticeable in the next ten days. Forecast highs will fluctuate between 55.4°F and 73.4°F, while the low temperature range extends from 39.2°F to 50°F.
Thursday through next Saturday, with the highest temperature of 73.4°F, will be the warmest days in Lanark; today is the coldest day, with a maximum temperature of 55.4°F.
Updated: Oct 17, 2026 @ 17:08:54 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
On Saturday, the outlook remains bright and sunny.
Today, the maximum temperature will be 55.4°F, while the minimum temperature will be 39.2°F.
Today, the maximum temperature will be slightly cooler than the average highest temperature in October. The lowest temperature today will be also a couple of degrees lower than the average low temperature.
Today, the maximum temperature will be slightly cooler than the average highest temperature in October. The lowest temperature today will be also a couple of degrees lower than the average low temperature.
On Saturday, in Lanark, sunrise was at 7:14 am and sunset will be at 6:14 pm (CDT).
In Lanark, today, there will be 11h and 0min of daylight.
Tomorrow, sunshine will likely continue with scattered clouds at most.
Tomorrow, the maximum temperature in Lanark will be 64.4°F, while the minimum temperature will be 39.2°F.
The highest temperature tomorrow will be slightly warmer than the average maximum temperature in October. The lowest temperature will be also slightly cooler than the average low of 43.2°F.
The highest temperature tomorrow will be slightly warmer than the average maximum temperature in October. The lowest temperature will be also slightly cooler than the average low of 43.2°F.
On Sunday, in Lanark, sunrise will be at 7:15 am and sunset at 6:13 pm (CDT).
In Lanark, Illinois, the length of the day tomorrow will be 10h and 58min.





