Curtis, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Mostly Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Curtis, IL in one place.
Patchy fog before 9am. Mostly sunny, with a high near 93. Heat index values as high as 101. South southwest wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Curtis, 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: Sep 17, 2026 8:42 AM CDT.
The active forecast window currently covers Sep 17 to Sep 23, 2026 for Curtis, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 17 to Sep 23, 2026
- Latest sync
- Sep 17, 2026 8:42 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Curtis
Today looks like the warmest upcoming period in Curtis at 93 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Monday Night at about 6 to 10 mph NE.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 17, 2026 8:42 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
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 68. North northeast wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms before 2pm. Mostly sunny, with a high near 88. East wind around 6 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 69. Southeast wind around 8 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
A slight chance of rain showers before 7am. Partly sunny, with a high near 93. South southwest wind around 9 mph, with gusts as high as 17 mph. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 69. West southwest wind 3 to 7 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 84. North wind 3 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 75. Chance of precipitation is 60%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
A chance of rain showers before 7am. Partly sunny, with a high near 74.
Partly cloudy, with a low around 56.
Mostly sunny, with a high near 77.
Partly cloudy, with a low around 58.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Sep 17
|
Patchy Fog then Mostly Sunny
|
93°F |
6 mph
SSW
|
|
Tonight
Sep 17
|
Partly Cloudy then Chance Showers And Thunderstorms
|
68°F |
6 mph
NNE
|
|
Friday
Sep 18
|
Slight Chance Showers And Thunderstorms
|
88°F |
6 mph
E
|
|
Friday Night
Sep 18
|
Chance Showers And Thunderstorms
|
69°F |
8 mph
SE
|
|
Saturday
Sep 19
|
Slight Chance Rain Showers then Partly Sunny
|
93°F |
9 mph
SSW
|
|
Saturday Night
Sep 19
|
Chance Showers And Thunderstorms
|
69°F |
3 to 7 mph
WSW
|
|
Sunday
Sep 20
|
Chance Showers And Thunderstorms
|
84°F |
3 to 8 mph
N
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
63°F |
6 to 9 mph
NE
|
|
Monday
Sep 21
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
75°F |
9 mph
NE
|
|
Monday Night
Sep 21
|
Chance Showers And Thunderstorms
|
58°F |
6 to 10 mph
NE
|
|
Tuesday
Sep 22
|
Chance Rain Showers then Partly Sunny
|
74°F |
8 mph
NE
|
|
Tuesday Night
Sep 22
|
Partly Cloudy
|
56°F |
3 to 8 mph
NNE
|
|
Wednesday
Sep 23
|
Mostly Sunny
|
77°F |
3 to 7 mph
NE
|
|
Wednesday Night
Sep 23
|
Partly Cloudy
|
58°F |
2 to 6 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Curtis.