Lyndon, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Lyndon, IL in one place.
Rain showers before 10am, then showers and thunderstorms. Cloudy, with a high near 63. East wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Lyndon, 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 14, 2026 4:09 AM CDT.
The active forecast window currently covers Oct 15 to Oct 20, 2026 for Lyndon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 15 to Oct 20, 2026
- Latest sync
- Oct 14, 2026 4:09 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Lyndon
Tuesday looks like the warmest upcoming period in Lyndon at 73 degrees F.
Friday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Thursday Night at about 5 to 25 mph NW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 14, 2026 4:09 AM CDT
- Coverage
- 6 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 before 1am. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
A slight chance of rain showers after 7am. Partly sunny, with a high near 55.
A slight chance of rain showers before 7pm, then areas of frost. Mostly clear, with a low around 33.
Widespread frost before 9am. Sunny, with a high near 57.
Clear, with a low around 40.
Sunny, with a high near 66.
Partly cloudy, with a low around 46.
Partly sunny, with a high near 68.
Partly cloudy, with a low around 46.
Mostly sunny, with a high near 73.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Oct 15
|
Showers And Thunderstorms
|
63°F |
5 to 10 mph
E
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
45°F |
5 to 25 mph
NW
|
|
Friday
Oct 16
|
Slight Chance Rain Showers
|
55°F |
15 to 25 mph
NW
|
|
Friday Night
Oct 16
|
Slight Chance Rain Showers then Areas Of Frost
|
33°F |
0 to 15 mph
N
|
|
Saturday
Oct 17
|
Widespread Frost then Sunny
|
57°F |
0 to 10 mph
W
|
|
Saturday Night
Oct 17
|
Clear
|
40°F |
5 to 10 mph
SW
|
|
Sunday
Oct 18
|
Sunny
|
66°F |
10 to 15 mph
S
|
|
Sunday Night
Oct 18
|
Partly Cloudy
|
46°F |
5 to 10 mph
S
|
|
Monday
Oct 19
|
Partly Sunny
|
68°F |
5 mph
SW
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
46°F |
0 to 5 mph
S
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
73°F |
0 to 5 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lyndon.