Iroquois, IL Weather Forecast
Local 7-day forecast
Areas Of Frost then Slight Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Iroquois, IL in one place.
Areas of frost before 8am, then a slight chance of rain showers. Mostly sunny. High near 55, with temperatures falling to around 51 in the afternoon. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Local Weather Overview
This forecast page for Iroquois, 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 18, 2026 12:35 PM CDT.
The active forecast window currently covers Apr 19 to Apr 24, 2026 for Iroquois, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 12:35 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Iroquois
Thursday looks like the warmest upcoming period in Iroquois at 82 degrees F.
Sunday Night is the coolest period ahead with temperatures near 31 degrees F.
The strongest winds are forecast for Sunday at about 5 to 15 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 12:35 PM CDT
- Coverage
- 6 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 slight chance of rain showers before 7pm, then widespread frost. Mostly clear, with a low around 31. North northwest wind 0 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Widespread frost before 9am. Sunny, with a high near 56. East wind 0 to 5 mph.
Partly cloudy, with a low around 44.
Mostly sunny, with a high near 75.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 54.
Mostly sunny, with a high near 78.
Mostly clear, with a low around 56.
Sunny, with a high near 82.
A chance of rain showers after 7pm. Partly cloudy, with a low around 60.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 75.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Areas Of Frost then Slight Chance Rain Showers
|
55°F |
5 to 15 mph
W
|
|
Sunday Night
Apr 19
|
Slight Chance Rain Showers then Widespread Frost
|
31°F |
0 to 10 mph
NNW
|
|
Monday
Apr 20
|
Widespread Frost then Sunny
|
56°F |
0 to 5 mph
E
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
44°F |
5 to 10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
75°F |
10 to 15 mph
SSW
|
|
Tuesday Night
Apr 21
|
Slight Chance Showers And Thunderstorms
|
54°F |
5 to 10 mph
WSW
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
78°F |
5 mph
WSW
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
56°F |
5 mph
SSE
|
|
Thursday
Apr 23
|
Sunny
|
82°F |
5 to 15 mph
S
|
|
Thursday Night
Apr 23
|
Chance Rain Showers
|
60°F |
15 mph
S
|
|
Friday
Apr 24
|
Rain Showers Likely then Chance Showers And Thunderstorms
|
75°F |
15 mph
SSW
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
47°F |
10 to 15 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Iroquois.