Blair, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Blair, IL in one place.
Sunny, with a high near 66.
Local Weather Overview
This forecast page for Blair, 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: Apr 16, 2026 7:51 PM CDT.
The active forecast window currently covers Apr 19 to Apr 22, 2026 for Blair, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 7:51 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Blair
Tuesday looks like the warmest upcoming period in Blair at 77 degrees F.
Sunday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Tuesday at about 8 to 13 mph SW.
The forecast from Apr 19 through Apr 22 stays mostly dry.
Forecast Details
- Last updated
- Apr 16, 2026 7:51 PM CDT
- Coverage
- 4 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 41.
Sunny, with a high near 72.
Mostly clear, with a low around 51.
Sunny, with a high near 77.
Partly cloudy, with a low around 54.
Mostly sunny, with a high near 77.
Mostly clear, with a low around 56.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Sunny
|
66°F |
6 to 12 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
41°F |
3 to 7 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
72°F |
3 to 8 mph
SE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
51°F |
8 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
77°F |
8 to 13 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
54°F |
7 to 10 mph
SW
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
77°F |
6 to 9 mph
SW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
56°F |
7 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Blair.