Weather forecast for 10 daysPort Byron, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 14mphSSW 195°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:15 pm CDT
- details ▼
Today, a sun-drenched sky is anticipated.
Temperature fluctuations will be substantial, ranging from a peak of a breezy 66.2°F to a low of a cold 39.2°F.
Today, the expected high will be relatively higher than the average October maximum of 61.3°F.
Sunrise will be at 7:17 am and sunset at 6:15 pm; the daylight will last for 10h and 59min.
Temperature fluctuations will be substantial, ranging from a peak of a breezy 66.2°F to a low of a cold 39.2°F.
Today, the expected high will be relatively higher than the average October maximum of 61.3°F.
Sunrise will be at 7:17 am and sunset at 6:15 pm; the daylight will last for 10h and 59min.
10-day overview
Daily temperatures
Warmest period: Thursday - Saturday 75°C.
Coldest day: today 66°C.
Coldest day: today 66°C.
Chance of precipitation
Highest chance: Sunday 25.10. 9%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 14mphSSW 195°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 41°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphS 172°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:18 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphSE 126°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 46°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 5mphS 176°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:20 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 46°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 5mphSE 133°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:21 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 75°F
- 50°F
Partly Cloudy
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 9mphSE 138°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:22 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 75°F
- 52°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 11mphSSE 156°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:24 am CDT
- Sunset: 6:06 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 9%
- Precipitation: 0"
- Wind: 7mphSSW 198°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:25 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 70°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 7mphE 80°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:26 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 70°F
- 52°F
Mostly Cloudy
- Precip. probability: 8%
- Precipitation: 0"
- Wind: 7mphSE 124°
- Humidity: 60%
- UV index: 3
- Sunrise: 7:27 am CDT
- Sunset: 6:02 pm CDT
- details ▼
Over the next ten days, a combination of cloud-filled and clear weather is forecasted.
Rainfall is not anticipated in Port Byron in the upcoming period.
In the upcoming days, the highest temperature will range between 66.2°F and 75.2°F, while there will be a marked difference in overnight low temperatures, as the overnight lows will vary from 39.2°F to 51.8°F.
The warmest days will be Thursday through Saturday, with a maximum of 75.2°F; today is the coldest day, with a maximum temperature of 66.2°F.
Rainfall is not anticipated in Port Byron in the upcoming period.
In the upcoming days, the highest temperature will range between 66.2°F and 75.2°F, while there will be a marked difference in overnight low temperatures, as the overnight lows will vary from 39.2°F to 51.8°F.
The warmest days will be Thursday through Saturday, with a maximum of 75.2°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 05:39:00 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
Today, conditions will remain bright with clear skies.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The highest temperature today will be moderately higher than the average maximum temperature in October. Today, the lowest temperature will be also slightly cooler than the average low temperature.
The highest temperature today will be moderately higher than the average maximum temperature in October. Today, the lowest temperature will be also slightly cooler than the average low temperature.
On Sunday, in Port Byron, sunrise will be at 7:17 am and sunset at 6:15 pm (CDT).
In Port Byron, the length of the day today will be 10h and 59min.
