Thayer, IL Weather Forecast
Local 7-day forecast
Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for Thayer, IL in one place.
Patchy fog. Clear, with a low around 68. North wind around 1 mph.
Local Weather Overview
This forecast page for Thayer, 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 15, 2026 7:31 AM CDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Thayer, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 7:31 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Thayer
Monday looks like the warmest upcoming period in Thayer at 92 degrees F.
Overnight is the coolest period ahead with temperatures near 68 degrees F.
The strongest winds are forecast for Tuesday at about 7 to 12 mph NW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 7:31 AM CDT
- Coverage
- 7 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
Patchy fog before 8am. Sunny, with a high near 91. Northeast wind around 3 mph.
Mostly clear, with a low around 70. East wind 0 to 3 mph.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Southeast wind 0 to 5 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Southwest wind around 3 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 88. Chance of precipitation is 70%.
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 72. Chance of precipitation is 70%.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 91. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 72. Chance of precipitation is 20%.
Sunny, with a high near 90.
Mostly clear, with a low around 71.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
Sunny, with a high near 87.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 15
|
Patchy Fog
|
68°F |
1 mph
N
|
|
Wednesday
Jul 15
|
Patchy Fog then Sunny
|
91°F |
3 mph
NE
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
70°F |
0 to 3 mph
E
|
|
Thursday
Jul 16
|
Mostly Sunny then Chance Showers And Thunderstorms
|
89°F |
0 to 5 mph
SE
|
|
Thursday Night
Jul 16
|
Chance Showers And Thunderstorms
|
71°F |
3 mph
SW
|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
88°F |
2 to 6 mph
W
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Partly Cloudy
|
72°F |
3 to 7 mph
W
|
|
Saturday
Jul 18
|
Sunny then Slight Chance Showers And Thunderstorms
|
91°F |
10 mph
W
|
|
Saturday Night
Jul 18
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
72°F |
8 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
90°F |
6 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
71°F |
6 mph
S
|
|
Monday
Jul 20
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
9 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
71°F |
8 mph
W
|
|
Tuesday
Jul 21
|
Sunny
|
87°F |
7 to 12 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Thayer.