Lewistown, IL Weather Forecast
Local 7-day forecast
Partly Sunny then Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Lewistown, IL in one place.
A chance of rain showers after noon. Partly sunny, with a high near 55. Northwest wind 17 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Lewistown, 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 5:30 PM CDT.
The active forecast window currently covers Oct 16 to Oct 21, 2026 for Lewistown, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 16 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 5:30 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewistown
Wednesday looks like the warmest upcoming period in Lewistown at 77 degrees F.
Friday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Friday at about 17 to 21 mph NW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 5:30 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Areas of frost after 4am. Partly cloudy, with a low around 35. North wind 5 to 17 mph, with gusts as high as 31 mph. New rainfall amounts less than a tenth of an inch possible.
Areas of frost before 9am. Sunny, with a high near 58. West southwest wind 0 to 3 mph.
Areas of frost after 5am. Clear, with a low around 36. South wind around 2 mph.
Areas of frost before 8am. Sunny, with a high near 67. South wind 3 to 9 mph, with gusts as high as 16 mph.
Mostly clear, with a low around 39.
Mostly sunny, with a high near 70.
Partly cloudy, with a low around 43.
Mostly sunny, with a high near 75.
Mostly clear, with a low around 46.
Sunny, with a high near 77.
Mostly clear, with a low around 50.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Oct 16
|
Partly Sunny then Chance Rain Showers
|
55°F |
17 to 21 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy then Areas Of Frost
|
35°F |
5 to 17 mph
N
|
|
Saturday
Oct 17
|
Areas Of Frost then Sunny
|
58°F |
0 to 3 mph
WSW
|
|
Saturday Night
Oct 17
|
Clear then Areas Of Frost
|
36°F |
2 mph
S
|
|
Sunday
Oct 18
|
Areas Of Frost then Sunny
|
67°F |
3 to 9 mph
S
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
39°F |
1 to 5 mph
S
|
|
Monday
Oct 19
|
Mostly Sunny
|
70°F |
0 to 3 mph
S
|
|
Monday Night
Oct 19
|
Partly Cloudy
|
43°F |
2 mph
ESE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
75°F |
1 mph
ESE
|
|
Tuesday Night
Oct 20
|
Mostly Clear
|
46°F |
1 mph
ENE
|
|
Wednesday
Oct 21
|
Sunny
|
77°F |
0 to 3 mph
ESE
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
50°F |
2 mph
SE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lewistown.