Grigg, Illinois Weather
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Weather Forecast for Grigg, Illinois : Randolph County
Issued: 2:21 am CDT Sep 16, 2025 Latitude: 38.1906056 Longitude: -89.9078827 View on Google Maps

MouseOver for Detail Forecast
Overnight Tuesday Wednesday Thursday Friday Saturday Sunday Monday
Mostly Clear on Overnight Sunny on Tuesday Sunny on Wednesday Mostly Sunny on Thursday 40% chance of thunderstorms on Friday 30% chance of thunderstorms on Saturday 30% chance of on Sunday 30% chance of thunderstorms on Monday
Low: 65°F High: 94°F High: 93°F High: 95°F High: 88°F High: 85°F High: 86°F High: 87°F
Low: 64°F Low: 62°F Low: 66°F Low: 64°F Low: 65°F Low: 66°F  
Mostly Clear Sunny Sunny Mostly Sunny Thunderstorms Thunderstorms Partly Sunny Thunderstorms
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Current Conditions at
SPARTA - (KSAR)
72°
Clear
as of 3:35 AM CDST
Rel. Humidity: 83%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.11 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
SCOTT AFB - (KBLV)
70°
Clear
as of 2:55 AM CDST
Rel. Humidity: 88%
Dew Point: 66°F
Visibility: 10 Miles
Pressure: 30.08 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
EAST ST LOUIS - (KCPS)
66°
Clear
as of 2:53 AM CDST
Rel. Humidity: 88%
Dew Point: 63°F
Visibility: 10 Miles
Pressure: 30.10 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Clear
Current Conditions at
FARMINGTON ARPT - (KFAM)
66°
Partly Cloudy
as of 3:15 AM CDST
Rel. Humidity: 93%
Dew Point: 64°F
Visibility: 10 Miles
Pressure: 30.12 in.
Flight Rule: VFR
Wind Data
Calm
Cloud Level(s): Scattered at 6000ft
Mostly Clear on Overnight Overnight... Mostly clear, with a low around 65. Calm wind.
Sunny on Tuesday Tuesday... Sunny, with a high near 94. Calm wind becoming northeast around 6 mph in the afternoon.
Mostly Clear on Tuesday Night Tuesday Night... Mostly clear, with a low around 64. Northeast wind 3 to 5 mph.
Sunny on Wednesday Wednesday... Sunny, with a high near 93. Light and variable wind.
Mostly Clear on Wednesday Night Wednesday Night... Mostly clear, with a low around 62. Calm wind.
Mostly Sunny on Thursday Thursday... Mostly sunny, with a high near 95.
Cloudy on Thursday Night Thursday Night... Partly cloudy, with a low around 66.
40% chance of thunderstorms Friday Friday... A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 88. Chance of precipitation is 40%.
40% chance of thunderstorms Friday Night Friday Night... A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
30% chance of thunderstorms Saturday Saturday... A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
20% chance of thunderstorms Saturday Night Saturday Night... A 20 percent chance of showers and thunderstorms. Partly cloudy, with a low around 65.
30% chance of Sunday Sunday... A 30 percent chance of showers. Partly sunny, with a high near 86.
30% chance of thunderstorms Sunday Night Sunday Night... A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
30% chance of thunderstorms Monday Monday... A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
Current Radar Image


Sun Almanac for Grigg, Illinois
Sunrise: 06:43 AM
Sunset: 7:06 PM
Civil Sunrise:06:16 AM
Civil Sunset: 7:32 PM
Nautical Sunrise: 05:45 AM
Nautical Sunset: 8:03 PM
Astro Sunrise: 05:14 AM
Astro Sunset: 8:35 PM
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