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: 53%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:15 pm CDT
- details ▼
Tomorrow, on Sunday, sunshine and minimal clouds are in the outlook.
Temperature readings are predicted to span from a high of a breezy 66.2°F to a low of a wintry 39.2°F.
Tomorrow, the forecasted high will be moderately higher than October's typical maximum of 61.3°F.
Sunrise will be at 7:17 am and sunset at 6:15 pm; tomorrow's daylight will last for 10h and 59min.
Temperature readings are predicted to span from a high of a breezy 66.2°F to a low of a wintry 39.2°F.
Tomorrow, the forecasted high will be moderately higher than October's typical maximum of 61.3°F.
Sunrise will be at 7:17 am and sunset at 6:15 pm; tomorrow's daylight will last for 10h and 59min.
10-day overview
Daily temperatures
Warmest period: Thursday - Saturday 75°C.
Coldest day: tomorrow 66°C.
Coldest day: tomorrow 66°C.
Chance of precipitation
Highest chance: Sunday 25.10. 9%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 39°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 8mphS 189°
- Humidity: 69%
- UV index: 0
- Sunrise: 7:15 am CDT
- Sunset: 6:17 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 14mphSSW 195°
- Humidity: 53%
- 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: 5%
- Precipitation: 0"
- Wind: 5mphS 174°
- Humidity: 56%
- 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 127°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 45°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphS 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
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSE 127°
- Humidity: 57%
- 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 135°
- Humidity: 56%
- 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: 10mphSSE 158°
- Humidity: 55%
- 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 ▼
Forecasts for the ten-day outlook show that a combination of mostly clear and cloud-filled weather is anticipated.
Rain is not forecasted in Port Byron in the upcoming days.
In the upcoming period, the highest temperature will vary between 66.2°F and 75.2°F, while the nightly low temperatures will show a considerable swing, as the minimum temperature is expected to range between 39.2°F and 51.8°F.
With a maximum temperature of 75.2°F, Thursday through next Saturday will be the warmest days; Sunday will be the coldest day, with the highest temperature of 66.2°F.
Rain is not forecasted in Port Byron in the upcoming days.
In the upcoming period, the highest temperature will vary between 66.2°F and 75.2°F, while the nightly low temperatures will show a considerable swing, as the minimum temperature is expected to range between 39.2°F and 51.8°F.
With a maximum temperature of 75.2°F, Thursday through next Saturday will be the warmest days; Sunday will be the coldest day, with the highest temperature of 66.2°F.
Updated: Oct 18, 2026 @ 02:47:26 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 Sunday, sunshine is expected with little to no cloud cover.
Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be moderately higher than the average highest temperature of 61.3°F in October. The lowest temperature tomorrow will be also a few degrees lower than the average low temperature.
The maximum temperature will be moderately higher than the average highest temperature of 61.3°F in October. The lowest temperature tomorrow will be also a few degrees lower 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, tomorrow, there will be 10h and 59min of daylight.
