Sidney, IL Weather Forecast
Local 7-day forecast
Patchy Fog
Track current conditions, temperature changes, wind, and the full daily outlook for Sidney, IL in one place.
Patchy fog. Partly cloudy, with a low around 72. West southwest wind around 2 mph. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Sidney, 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 17, 2026 6:51 AM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Sidney, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 6:51 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Sidney
Saturday looks like the warmest upcoming period in Sidney at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 59 degrees F.
The strongest winds are forecast for Tuesday at about 12 to 16 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 6:51 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 and a chance of showers and thunderstorms. Partly sunny, with a high near 88. West southwest wind 2 to 7 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 5am. Partly cloudy, with a low around 72. Southwest wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Heat index values as high as 106. West wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 7pm, then a chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Partly cloudy, with a low around 67. North northwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 85. Northeast wind around 7 mph.
Mostly clear, with a low around 64. East wind around 5 mph.
Mostly sunny, with a high near 88.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 88.
Mostly clear, with a low around 64.
Sunny, with a high near 80.
Mostly clear, with a low around 59.
Sunny, with a high near 80.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 17
|
Patchy Fog
|
72°F |
2 mph
WSW
|
|
Friday
Jul 17
|
Patchy Fog
|
88°F |
2 to 7 mph
WSW
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
72°F |
7 mph
SW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
8 to 14 mph
W
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms Likely
|
67°F |
5 to 10 mph
NNW
|
|
Sunday
Jul 19
|
Sunny
|
85°F |
7 mph
NE
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
64°F |
5 mph
E
|
|
Monday
Jul 20
|
Mostly Sunny
|
88°F |
3 to 8 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
73°F |
12 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
88°F |
12 to 16 mph
W
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
64°F |
9 to 16 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
12 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
59°F |
3 to 9 mph
NNE
|
|
Thursday
Jul 23
|
Sunny
|
80°F |
5 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Sidney.