Royal Lakes, Illinois Weather
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Weather Forecast for Royal Lakes, Illinois : Macoupin County
Issued: 4:16 am CDT Sep 16, 2025 Latitude: 39.1103241 Longitude: -89.9614918 View on Google Maps

MouseOver for Detail Forecast
Today Tonight Wednesday Thursday Friday Saturday Sunday Monday
Sunny on Today Mostly Clear on Tonight Sunny on Wednesday Mostly Sunny on Thursday 30% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of thunderstorms on Sunday 30% chance of thunderstorms on Monday
High: 91°F Low: 62°F High: 91°F High: 92°F High: 85°F High: 83°F High: 85°F High: 85°F
Low: 61°F Low: 65°F Low: 63°F Low: 63°F Low: 64°F  
Sunny Mostly Clear Sunny Mostly Sunny Thunderstorms Thunderstorms Thunderstorms Thunderstorms
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Current Conditions at
ALTON - (KALN)
63°
Clear
as of 4:55 AM CDST
Rel. Humidity: 93%
Dew Point: 61°F
Visibility: 10 Miles
Pressure: 30.13 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
LITCHFIELD MUNI ARP - (K3LF)
61°
Clear
as of 4:55 AM CDST
Rel. Humidity: 87%
Dew Point: 57°F
Visibility: 10 Miles
Pressure: 30.15 in.
Flight Rule: VFR
Wind Data
3 MPH
350° North
Cloud Level(s): Clear
Current Conditions at
ST CHARLES - (KSET)
66°
Clear
as of 4:54 AM CDST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
3 MPH
320° Northwest
Cloud Level(s): Clear
Current Conditions at
ST LOUIS - (KSTL)
72°
Clear
as of 4:51 AM CDST
Rel. Humidity: 73%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
3 MPH
040° Northeast
Cloud Level(s): Clear
Sunny on Today Today... Sunny, with a high near 91. Northeast wind 3 to 7 mph.
Mostly Clear on Tonight Tonight... Mostly clear, with a low around 62. East wind 5 to 7 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 91. Light east wind.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 61. Light southeast wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 92. South wind 3 to 6 mph.
20% chance of rain Thursday Night Thursday Night... A 20 percent chance of showers after 1am. Partly cloudy, with a low around 65.
30% chance of thunderstorms Friday Friday... A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Partly sunny, with a high near 85. Chance of precipitation is 30%.
40% chance of thunderstorms Friday Night Friday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 63.
30% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 83. Chance of precipitation is 30%.
20% chance of thunderstorms Saturday Night Saturday Night... A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 20%.
30% chance of thunderstorms Sunday Sunday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 85.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 85.
Current Radar Image


Sun Almanac for Royal Lakes, Illinois
Sunrise: 06:43 AM
Sunset: 7:06 PM
Civil Sunrise:06:16 AM
Civil Sunset: 7:33 PM
Nautical Sunrise: 05:44 AM
Nautical Sunset: 8:05 PM
Astro Sunrise: 05:12 AM
Astro Sunset: 8:37 PM
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