Flagg, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Flagg, IL in one place.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 60. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Flagg, 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 9, 2026 3:37 AM CDT.
The active forecast window currently covers Apr 11 to Apr 15, 2026 for Flagg, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 11 to Apr 15, 2026
- Latest sync
- Apr 9, 2026 3:37 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Flagg
Monday looks like the warmest upcoming period in Flagg at 79 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 50 degrees F.
The strongest winds are forecast for Sunday at about 15 to 25 mph S.
Precipitation is mentioned in 9 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 9, 2026 3:37 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
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. Mostly cloudy, with a low around 52.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
Showers and thunderstorms likely before 1am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 79.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 63.
Showers and thunderstorms. Partly sunny, with a high near 76.
Showers and thunderstorms. Mostly cloudy, with a low around 50.
Showers and thunderstorms likely. Mostly cloudy, with a high near 66.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 11
|
Mostly Sunny then Slight Chance Rain Showers
|
60°F |
5 to 15 mph
ESE
|
|
Saturday Night
Apr 11
|
Chance Rain Showers
|
52°F |
10 to 15 mph
SSE
|
|
Sunday
Apr 12
|
Chance Rain Showers
|
74°F |
15 to 25 mph
S
|
|
Sunday Night
Apr 12
|
Showers And Thunderstorms Likely
|
61°F |
20 to 25 mph
SSW
|
|
Monday
Apr 13
|
Chance Showers And Thunderstorms
|
79°F |
20 mph
SSW
|
|
Monday Night
Apr 13
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
63°F |
15 to 20 mph
SSW
|
|
Tuesday
Apr 14
|
Showers And Thunderstorms
|
76°F |
15 to 20 mph
SW
|
|
Tuesday Night
Apr 14
|
Showers And Thunderstorms
|
50°F |
15 mph
SSW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
66°F |
15 to 20 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Flagg.
