Port Byron, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Port Byron, IL in one place.
Showers and thunderstorms likely. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Port Byron, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 9, 2026 8:13 PM CDT.
The active forecast window currently covers Apr 14 to Apr 16, 2026 for Port Byron, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 14 to Apr 16, 2026
- Latest sync
- Apr 9, 2026 8:13 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Port Byron
Tuesday looks like the warmest upcoming period in Port Byron at 80 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 51 degrees F.
The strongest winds are forecast for Tuesday at about 15 mph SW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 8:13 PM CDT
- Coverage
- 3 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely. Mostly cloudy, with a low around 57. Chance of precipitation is 70%.
Showers and thunderstorms likely. Partly sunny, with a high near 72. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 51. Chance of precipitation is 50%.
A slight chance of rain showers. Mostly sunny, with a high near 75.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Apr 14
|
Showers And Thunderstorms Likely
|
80°F |
15 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms Likely
|
57°F |
15 mph
SW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
72°F |
15 mph
SW
|
|
Wednesday Night
Apr 15
|
Chance Showers And Thunderstorms
|
51°F |
10 to 15 mph
SW
|
|
Thursday
Apr 16
|
Slight Chance Rain Showers
|
75°F |
10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Port Byron.
