Royal, IL Weather Forecast
Local 7-day forecast
Scattered Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Royal, IL in one place.
Scattered showers and thunderstorms before 3pm, then a chance of showers and thunderstorms between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89. Heat index values as high as 102. West southwest wind around 7 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Royal, 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 3:14 PM CDT.
The active forecast window currently covers Jul 17 to Jul 23, 2026 for Royal, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 23, 2026
- Latest sync
- Jul 17, 2026 3:14 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Royal
Saturday looks like the warmest upcoming period in Royal 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 10 to 17 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 17, 2026 3:14 PM 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
Scattered showers and thunderstorms before 8pm. Partly cloudy, with a low around 73. West southwest wind 3 to 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth 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 15 mph, with gusts as high as 23 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 1am. Partly cloudy, with a low around 67. North northwest wind 5 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Sunny, with a high near 84. Northeast wind around 6 mph.
Mostly clear, with a low around 64. East wind around 3 mph.
Mostly sunny, with a high near 88. South wind 2 to 9 mph.
A chance of showers and thunderstorms after 7pm. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Mostly clear, with a low around 63.
Sunny, with a high near 80.
Mostly clear, with a low around 59.
Sunny, with a high near 79.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Jul 17
|
Scattered Showers And Thunderstorms
|
89°F |
7 mph
WSW
|
|
Tonight
Jul 17
|
Scattered Showers And Thunderstorms then Partly Cloudy
|
73°F |
3 to 7 mph
WSW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
90°F |
8 to 15 mph
W
|
|
Saturday Night
Jul 18
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
67°F |
5 to 10 mph
NNW
|
|
Sunday
Jul 19
|
Sunny
|
84°F |
6 mph
NE
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
64°F |
3 mph
E
|
|
Monday
Jul 20
|
Mostly Sunny
|
88°F |
2 to 9 mph
S
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
72°F |
12 mph
SW
|
|
Tuesday
Jul 21
|
Chance Showers And Thunderstorms then Mostly Sunny
|
88°F |
10 to 17 mph
W
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
63°F |
8 to 15 mph
NNW
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
8 to 12 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
59°F |
2 to 8 mph
NNE
|
|
Thursday
Jul 23
|
Sunny
|
79°F |
3 mph
NE
|
|
Thursday Night
Jul 23
|
Partly Cloudy then Slight Chance Rain Showers
|
60°F |
3 mph
E
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Royal.