Iroquois County, IL Weather Forecast
County weather hub
Patchy Fog then Mostly Sunny
Compare major city weather across Iroquois County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Patchy fog before 8am. Mostly sunny, with a high near 83. South southeast wind 5 to 20 mph, with gusts as high as 30 mph.
County Weather Overview
This county weather page brings together forecast coverage for Iroquois County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 2 of 2 mapped cities in Iroquois County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Apr 17 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 4:44 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Iroquois County
Friday looks like the warmest upcoming period in Iroquois County at 83 degrees F.
Sunday Night is the coolest period ahead with temperatures near 33 degrees F.
The strongest winds are forecast for Friday at about 5 to 20 mph SSE.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 4:44 AM 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
Showers and thunderstorms likely between 7pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 49. South southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Showers and thunderstorms. Partly sunny, with a high near 61. Chance of precipitation is 90%.
A slight chance of rain showers before 7pm. Mostly clear, with a low around 35.
Sunny, with a high near 54.
Areas of frost after 4am. Partly cloudy, with a low around 33.
Areas of frost before 9am. Sunny, with a high near 62.
Mostly clear, with a low around 46.
Mostly sunny, with a high near 73.
Partly cloudy, with a low around 52.
A slight chance of rain showers after 1pm. Mostly sunny, with a high near 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Patchy Fog then Mostly Sunny
|
83°F |
5 to 20 mph
SSE
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms Likely
|
49°F |
15 to 20 mph
SSW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
61°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Slight Chance Rain Showers then Mostly Clear
|
35°F |
10 to 15 mph
WNW
|
|
Sunday
Apr 19
|
Sunny
|
54°F |
10 to 15 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy then Areas Of Frost
|
33°F |
5 to 10 mph
N
|
|
Monday
Apr 20
|
Areas Of Frost then Sunny
|
62°F |
5 to 10 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
46°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
73°F |
10 to 15 mph
SW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
52°F |
10 to 15 mph
SW
|
|
Wednesday
Apr 22
|
Mostly Sunny then Slight Chance Rain Showers
|
74°F |
10 mph
WSW
|
Major City Forecasts
Live forecast snapshots for major cities across Iroquois County.
Coverage
Forecast coverage currently spans 2 of 2 mapped cities in Iroquois County.
Largest mapped city population in this region: 4,694.
