Grayville, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 78°F 26°C Heat Index: 78°F	Observed at: Grayville, IL	Elevation: 513 ft | 156 m
	Last Updated: July 16, 10:30 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 78°F | 26°C
	Pressure: 29.59 in | 1002 mb	Dewpoint: 76°F | 24°C
	Humidity: 94%	Wind: SSW 3 mph | SSW 5 kph
	Feels Like: 88°F | 31°C	Visibility: 25.5 mi | 41 km
	Lat/Long: 38.2575 | -87.9936	Sunrise: 5:41 AM   Sunset: 8:14 PM

7 Day Graphical Forecast

Valid: 10:32 PM 7/16/2026

Tonight Overcast 73 °F 22% Chance Precipitation Friday Overcast 89 |73 °F 25% Chance Precipitation Saturday Light Drizzle 92 |74 °F 42% Chance Precipitation Sunday Light Showers 86 |72 °F 42% Chance Precipitation Monday Light Drizzle 90 |69 °F 6% Chance Precipitation Tuesday Overcast 96 |71 °F 8% Chance Precipitation Wednesday Partly Cloudy 73 |59 °F 5% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:32 PM 7/16/2026

10 PM Clear 78 °F 10% Chance Precipitation

11 PM Clear 77 °F 10% Chance Precipitation

12 AM Clear 76 °F 7% Chance Precipitation

1 AM Clear 76 °F 6% Chance Precipitation

2 AM Clear 75 °F 4% Chance Precipitation

3 AM Clear 75 °F 3% Chance Precipitation

4 AM Clear 74 °F 3% Chance Precipitation

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

7 Day & Night Weather Forecast for Grayville, IL - (Fahrenheit & Celsius) Valid: 10:32 PM 7/16/2026 Tonight Overcast with a low around 73°F [23°C]. WSW wind to around 4 mph [7 kph], with gusts to near 10 mph [17 kph]. Chance of precipitation 22% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 89°F [32°C]. WSW wind to around 9 mph [14 kph], with gusts to near 16 mph [26 kph]. Dewpoint near 76°F [24°C] with humidity of 95%. Pressure around 29.59 in [1002 mb]. UV Index: 7.7. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 73°F [23°C]. WSW wind to around 9 mph [14 kph], with gusts to near 16 mph [26 kph]. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Saturday Light Drizzle with a high near 92°F [33°C]. W wind to around 14 mph [23 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 76°F [24°C] with humidity of 87%. Pressure around 29.59 in [1002 mb]. UV Index: 7.8. Chance of precipitation 42% with QPF of 0.01 in [0.3 mm]. Saturday Night Light Drizzle with a low around 74°F [24°C]. W wind to around 14 mph [23 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 42% with QPF of 0.01 in [0.3 mm]. Sunday Light Showers with a high near 86°F [30°C]. NNE wind to around 7 mph [12 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 76°F [24°C] with humidity of 97%. Pressure around 29.59 in [1002 mb]. UV Index: 7.75. Chance of precipitation 42% with QPF of 0.06 in [1.4 mm]. Sunday Night Light Showers with a low around 72°F [22°C]. NNE wind to around 7 mph [12 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 42% with QPF of 0.06 in [1.4 mm]. Monday Light Drizzle with a high near 90°F [32°C]. SSE wind to around 8 mph [14 kph], with gusts to near 19 mph [30 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.59 in [1002 mb]. UV Index: 7.25. Chance of precipitation 6% with QPF of 0.01 in [0.2 mm]. Monday Night Light Drizzle with a low around 69°F [21°C]. SSE wind to around 8 mph [14 kph], with gusts to near 19 mph [30 kph]. Chance of precipitation 6% with QPF of 0.01 in [0.2 mm]. Tuesday Overcast with a high near 96°F [35°C]. SW wind to around 14 mph [23 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 76°F [24°C] with humidity of 91%. Pressure around 29.59 in [1002 mb]. UV Index: 7.2. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 71°F [22°C]. SW wind to around 14 mph [23 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm]. Wednesday Partly Cloudy with a high near 73°F [23°C]. NNE wind to around 14 mph [23 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 76°F [24°C] with humidity of 89%. Pressure around 29.59 in [1002 mb]. UV Index: 7.6. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm]. Wednesday Night Partly Cloudy with a low around 59°F [15°C]. NNE wind to around 14 mph [23 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 5% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Grayville, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 0.3 mm | 0.01 in

Saturday Night: 0.3 mm | 0.01 in

Sunday: 1.4 mm | 0.06 in

Sunday Night: 1.4 mm | 0.06 in

Monday: 0.2 mm | 0.01 in

Monday Night: 0.2 mm | 0.01 in

Tuesday: 0.0 mm | 0.00 in

Tuesday Night: 0.0 mm | 0.00 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

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

Tonight: WSW @ 7 kph | 4 mph

Friday: WSW @ 14 kph | 9 mph

Friday Night: WSW @ 14 kph | 9 mph

Saturday: W @ 23 kph | 14 mph

Saturday Night: W @ 23 kph | 14 mph

Sunday: NNE @ 12 kph | 7 mph

Sunday Night: NNE @ 12 kph | 7 mph

Monday: SSE @ 14 kph | 8 mph

Monday Night: SSE @ 14 kph | 8 mph

Tuesday: SW @ 23 kph | 14 mph

Tuesday Night: SW @ 23 kph | 14 mph

Wednesday: NNE @ 23 kph | 14 mph

Wednesday Night: NNE @ 23 kph | 14 mph

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

Tonight: 98 %

Friday: 95 %

Friday Night: 95 %

Saturday: 87 %

Saturday Night: 87 %

Sunday: 97 %

Sunday Night: 97 %

Monday: 91 %

Monday Night: 91 %

Tuesday: 91 %

Tuesday Night: 91 %

Wednesday: 89 %

Wednesday Night: 89 %

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

Tonight: 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

Wednesday: 0.0 cm | 0.00 in

Wednesday Night: 0.0 cm | 0.00 in

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