Lancaster, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lancaster, IL in one place.
Sunny. High near 92, with temperatures falling to around 90 in the afternoon. East wind 0 to 3 mph.
Local Weather Overview
This forecast page for Lancaster, 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: Jul 14, 2026 7:53 PM CDT.
The active forecast window currently covers Jul 15 to Jul 20, 2026 for Lancaster, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 7:53 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Lancaster
Wednesday looks like the warmest upcoming period in Lancaster at 92 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 72 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph WSW.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 7:53 PM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Mostly clear, with a low around 72. Southeast wind 0 to 3 mph.
A chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. South wind 0 to 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. South southwest wind 1 to 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms between 7am and 1pm, then showers and thunderstorms. Mostly sunny, with a high near 90. West southwest wind 1 to 7 mph.
Showers and thunderstorms before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 73. West southwest wind around 5 mph.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 91. West southwest wind 5 to 10 mph.
A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 73. West southwest wind around 7 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. West wind 5 to 9 mph.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Southwest wind 3 to 7 mph.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 91. West southwest wind 5 to 10 mph.
A slight chance of showers and thunderstorms before 1am. Mostly clear, with a low around 73. West southwest wind 6 to 9 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Sunny
|
92°F |
0 to 3 mph
E
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
72°F |
0 to 3 mph
SE
|
|
Thursday
Jul 16
|
Sunny then Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
S
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
1 to 5 mph
SSW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
1 to 7 mph
WSW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
73°F |
5 mph
WSW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
73°F |
7 mph
WSW
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
5 to 9 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
3 to 7 mph
SW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
WSW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
73°F |
6 to 9 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lancaster.