Shannon, IL Weather Forecast
Local 7-day forecast
Chance Rain Showers then Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Shannon, IL in one place.
A chance of rain showers before 10pm. Mostly cloudy, with a low around 44. Northwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.
Local Weather Overview
This forecast page for Shannon, 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: Oct 15, 2026 10:28 PM CDT.
The active forecast window currently covers Oct 15 to Oct 22, 2026 for Shannon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 22, 2026
- Latest sync
- Oct 15, 2026 10:28 PM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Shannon
Wednesday looks like the warmest upcoming period in Shannon at 72 degrees F.
Friday Night is the coolest period ahead with temperatures near 30 degrees F.
The strongest winds are forecast for Friday at about 20 to 25 mph NW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 10:28 PM CDT
- Coverage
- 7 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
A chance of rain showers after 10am. Mostly cloudy, with a high near 53. Northwest wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 40%.
Widespread frost after 1am. Mostly clear, with a low around 30. North wind 0 to 25 mph, with gusts as high as 35 mph.
Widespread frost before 9am. Sunny, with a high near 56. West wind 0 to 10 mph.
Clear, with a low around 37.
Sunny, with a high near 63.
Mostly clear, with a low around 40.
Mostly sunny, with a high near 67.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 71.
Mostly clear, with a low around 46.
Sunny, with a high near 72.
Mostly clear, with a low around 51.
A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 72.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 15
|
Chance Rain Showers then Mostly Cloudy
|
44°F |
15 to 20 mph
NW
|
|
Friday
Oct 16
|
Chance Rain Showers
|
53°F |
20 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Mostly Clear then Widespread Frost
|
30°F |
0 to 25 mph
N
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
56°F |
0 to 10 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
37°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
63°F |
10 to 15 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
40°F |
5 to 10 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
67°F |
5 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
0 to 5 mph
S
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
71°F |
0 to 5 mph
SE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
0 to 5 mph
SE
|
|
Wednesday
Oct 21
|
Sunny
|
72°F |
5 to 10 mph
SE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
51°F |
5 mph
SE
|
|
Thursday
Oct 22
|
Slight Chance Rain Showers
|
72°F |
5 to 10 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Shannon.