Grigg, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 70°F 21°C	Observed at: Grigg, IL	Elevation: 505 ft | 154 m
	Last Updated: July 29, 5:15 AM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 70°F | 21°C
	Pressure: 29.46 in | 997.6 mb	Dewpoint: 68°F | 20°C
	Humidity: 93%	Wind: NE 4 mph | NE 6 kph
	Feels Like: 76°F | 24°C	Visibility: 26.3 mi | 42.3 km
	Lat/Long: 38.1906 | -89.9078	Sunrise: 5:59 AM   Sunset: 8:12 PM

7 Day Graphical Forecast

Valid: 5:28 AM 7/29/2026

Tonight Mostly Clear 69 °F 1% Chance Precipitation Thursday Overcast 88 |65 °F 0% Chance Precipitation Friday Drizzle 82 |65 °F 66% Chance Precipitation Saturday Light Drizzle 75 |68 °F 66% Chance Precipitation Sunday Clear 83 |62 °F 27% Chance Precipitation Monday Clear 85 |64 °F 21% Chance Precipitation Tuesday Clear 88 |63 °F 10% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:28 AM 7/29/2026

5 AM Mostly Clear 70 °F 0% Chance Precipitation

6 AM Clear 69 °F 1% Chance Precipitation

7 AM Clear 69 °F 1% Chance Precipitation

8 AM Clear 72 °F 1% Chance Precipitation

9 AM Clear 74 °F 1% Chance Precipitation

10 AM Clear 77 °F 1% Chance Precipitation

11 AM Clear 79 °F 1% Chance Precipitation

7 Day Textual Forecast - with QPF, Max Wind, Humidity, Snowfall & UV Index

7 Day & Night Weather Forecast for Grigg, IL - (Fahrenheit & Celsius) Valid: 5:28 AM 7/29/2026 Tonight Mostly Clear with a low around 69°F [21°C]. NNE wind to around 8 mph [14 kph], with gusts to near 17 mph [27 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 88°F [31°C]. E wind to around 6 mph [10 kph], with gusts to near 17 mph [28 kph]. Dewpoint near 68°F [20°C] with humidity of 81%. Pressure around 29.46 in [997.6 mb]. UV Index: 7.3. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 65°F [18°C]. E wind to around 6 mph [10 kph], with gusts to near 17 mph [28 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Drizzle with a high near 82°F [28°C]. SSE wind to around 15 mph [24 kph], with gusts to near 30 mph [48 kph]. Dewpoint near 68°F [20°C] with humidity of 87%. Pressure around 29.46 in [997.6 mb]. UV Index: 6.65. Chance of precipitation 66% with QPF of 0.11 in [2.8 mm]. Friday Night Drizzle with a low around 65°F [18°C]. SSE wind to around 15 mph [24 kph], with gusts to near 30 mph [48 kph]. Chance of precipitation 66% with QPF of 0.11 in [2.8 mm]. Saturday Light Drizzle with a high near 75°F [24°C]. N wind to around 15 mph [24 kph], with gusts to near 28 mph [44 kph]. Dewpoint near 68°F [20°C] with humidity of 98%. Pressure around 29.46 in [997.6 mb]. UV Index: 1.95. Chance of precipitation 66% with QPF of 0.04 in [0.9 mm]. Saturday Night Light Drizzle with a low around 68°F [20°C]. N wind to around 15 mph [24 kph], with gusts to near 28 mph [44 kph]. Chance of precipitation 66% with QPF of 0.04 in [0.9 mm]. Sunday Clear with a high near 83°F [28°C]. NNE wind to around 14 mph [22 kph], with gusts to near 25 mph [40 kph]. Dewpoint near 68°F [20°C] with humidity of 97%. Pressure around 29.46 in [997.6 mb]. UV Index: 7.45. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Sunday Night Clear with a low around 62°F [17°C]. NNE wind to around 14 mph [22 kph], with gusts to near 25 mph [40 kph]. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 85°F [30°C]. ENE wind to around 9 mph [14 kph], with gusts to near 13 mph [20 kph]. Dewpoint near 68°F [20°C] with humidity of 97%. Pressure around 29.46 in [997.6 mb]. UV Index: 7.5. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 64°F [18°C]. ENE wind to around 9 mph [14 kph], with gusts to near 13 mph [20 kph]. Chance of precipitation 21% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 88°F [31°C]. E wind to around 9 mph [14 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 68°F [20°C] with humidity of 93%. Pressure around 29.46 in [997.6 mb]. UV Index: 7.5. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 63°F [17°C]. E wind to around 9 mph [14 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 10% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Grigg, IL

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 2.8 mm | 0.11 in

Friday Night: 2.8 mm | 0.11 in

Saturday: 0.9 mm | 0.04 in

Saturday Night: 0.9 mm | 0.04 in

Sunday: 0.0 mm | 0.00 in

Sunday Night: 0.0 mm | 0.00 in

Monday: 0.0 mm | 0.00 in

Monday Night: 0.0 mm | 0.00 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

7 Day and Night - Maximum Wind Speed Forecast for Grigg, IL

Tonight: NNE @ 14 kph | 8 mph

Thursday: E @ 10 kph | 6 mph

Thursday Night: E @ 10 kph | 6 mph

Friday: SSE @ 24 kph | 15 mph

Friday Night: SSE @ 24 kph | 15 mph

Saturday: N @ 24 kph | 15 mph

Saturday Night: N @ 24 kph | 15 mph

Sunday: NNE @ 22 kph | 14 mph

Sunday Night: NNE @ 22 kph | 14 mph

Monday: ENE @ 14 kph | 9 mph

Monday Night: ENE @ 14 kph | 9 mph

Tuesday: E @ 14 kph | 9 mph

Tuesday Night: E @ 14 kph | 9 mph

7 Day and Night - Maximum Humidity Forecast for Grigg, IL

Tonight: 93 %

Thursday: 81 %

Thursday Night: 81 %

Friday: 87 %

Friday Night: 87 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 97 %

Monday Night: 97 %

Tuesday: 93 %

Tuesday Night: 93 %

7 Day and Night - Snowfall Totals Forecast for Grigg, IL

Tonight: 0.0 cm | 0.00 in

Thursday: 0.0 cm | 0.00 in

Thursday Night: 0.0 cm | 0.00 in

Friday: 0.0 cm | 0.00 in

Friday Night: 0.0 cm | 0.00 in

Saturday: 0.0 cm | 0.00 in

Saturday Night: 0.0 cm | 0.00 in

Sunday: 0.0 cm | 0.00 in

Sunday Night: 0.0 cm | 0.00 in

Monday: 0.0 cm | 0.00 in

Monday Night: 0.0 cm | 0.00 in

Tuesday: 0.0 cm | 0.00 in

Tuesday Night: 0.0 cm | 0.00 in

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