Lancaster, IL Weather Forecast
Local 7-day forecast
Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Lancaster, IL in one place.
Mostly sunny, with a high near 81. East wind 3 to 7 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: May 30, 2026 6:02 PM CDT.
The active forecast window currently covers May 31 to Jun 5, 2026 for Lancaster, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 31 to Jun 5, 2026
- Latest sync
- May 30, 2026 6:02 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Lancaster
Friday looks like the warmest upcoming period in Lancaster at 86 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 57 degrees F.
The strongest winds are forecast for Friday at about 5 to 13 mph SSW.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 6:02 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
A chance of rain showers after 1am. Mostly cloudy, with a low around 62. East northeast wind 1 to 5 mph. Chance of precipitation is 30%.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 82. East northeast wind around 5 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1am. Mostly clear, with a low around 60. Northeast wind around 6 mph. Chance of precipitation is 30%.
Sunny, with a high near 81. Northeast wind 5 to 12 mph.
Clear, with a low around 57. Northeast wind 3 to 10 mph.
Sunny, with a high near 81. East northeast wind around 6 mph.
Mostly clear, with a low around 58. East wind 1 to 5 mph.
Sunny, with a high near 84. South wind 3 to 7 mph.
Mostly clear, with a low around 64. South wind around 6 mph.
Mostly sunny, with a high near 86. South southwest wind 5 to 13 mph, with gusts as high as 18 mph.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68. South southwest wind 8 to 12 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
May 31
|
Mostly Sunny
|
81°F |
3 to 7 mph
E
|
|
Sunday Night
May 31
|
Mostly Cloudy then Chance Rain Showers
|
62°F |
1 to 5 mph
ENE
|
|
Monday
Jun 1
|
Chance Rain Showers
|
82°F |
5 mph
ENE
|
|
Monday Night
Jun 1
|
Chance Showers And Thunderstorms
|
60°F |
6 mph
NE
|
|
Tuesday
Jun 2
|
Sunny
|
81°F |
5 to 12 mph
NE
|
|
Tuesday Night
Jun 2
|
Clear
|
57°F |
3 to 10 mph
NE
|
|
Wednesday
Jun 3
|
Sunny
|
81°F |
6 mph
ENE
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
58°F |
1 to 5 mph
E
|
|
Thursday
Jun 4
|
Sunny
|
84°F |
3 to 7 mph
S
|
|
Thursday Night
Jun 4
|
Mostly Clear
|
64°F |
6 mph
S
|
|
Friday
Jun 5
|
Mostly Sunny
|
86°F |
5 to 13 mph
SSW
|
|
Friday Night
Jun 5
|
Slight Chance Showers And Thunderstorms
|
68°F |
8 to 12 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Lancaster.