Monticello, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Light Drizzle 79°F 26°C Heat Index: 79°F	Observed at: Monticello, IL	Elevation: 744 ft | 227 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Light Drizzle	Temperature: 79°F | 26°C
	Pressure: 29.31 in | 992.7 mb	Dewpoint: 74°F | 23°C
	Humidity: 85%	Wind: SSW 3 mph | SSW 5 kph
	Feels Like: 88°F | 31°C	Visibility: 31.8 mi | 51.2 km
	Lat/Long: 40.0278 | -88.5733	Sunrise: 5:39 AM   Sunset: 8:21 PM

7 Day Graphical Forecast

Valid: 10:29 PM 7/16/2026

Tonight Overcast 70 °F 14% Chance Precipitation Friday Overcast 89 |74 °F 25% Chance Precipitation Saturday Light Showers 92 |74 °F 50% Chance Precipitation Sunday Overcast 81 |66 °F 27% Chance Precipitation Monday Overcast 85 |66 °F 13% Chance Precipitation Tuesday Overcast 87 |68 °F 15% Chance Precipitation Wednesday Overcast 71 |52 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:29 PM 7/16/2026

10 PM Overcast 79 °F 11% Chance Precipitation

11 PM Overcast 78 °F 14% Chance Precipitation

12 AM Partly Cloudy 78 °F 11% Chance Precipitation

1 AM Clear 77 °F 8% Chance Precipitation

2 AM Clear 76 °F 5% Chance Precipitation

3 AM Clear 75 °F 5% Chance Precipitation

4 AM Mostly Clear 75 °F 6% Chance Precipitation

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

7 Day & Night Weather Forecast for Monticello, IL - (Fahrenheit & Celsius) Valid: 10:29 PM 7/16/2026 Tonight Overcast with a low around 70°F [21°C]. SSW wind to around 7 mph [12 kph], with gusts to near 11 mph [18 kph]. Chance of precipitation 14% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 89°F [32°C]. WSW wind to around 10 mph [17 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.65. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 74°F [23°C]. WSW wind to around 10 mph [17 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 25% with QPF of 0.00 in [0.0 mm]. Saturday Light Showers with a high near 92°F [33°C]. W wind to around 21 mph [33 kph], with gusts to near 35 mph [57 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.65. Chance of precipitation 50% with QPF of 0.39 in [9.9 mm]. Saturday Night Light Showers with a low around 74°F [23°C]. W wind to around 21 mph [33 kph], with gusts to near 35 mph [57 kph]. Chance of precipitation 50% with QPF of 0.39 in [9.9 mm]. Sunday Overcast with a high near 81°F [27°C]. ENE wind to around 7 mph [12 kph], with gusts to near 18 mph [28 kph]. Dewpoint near 74°F [23°C] with humidity of 96%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.7. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 66°F [19°C]. ENE wind to around 7 mph [12 kph], with gusts to near 18 mph [28 kph]. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Monday Overcast with a high near 85°F [29°C]. S wind to around 10 mph [17 kph], with gusts to near 24 mph [39 kph]. Dewpoint near 74°F [23°C] with humidity of 95%. Pressure around 29.31 in [992.7 mb]. UV Index: 7. Chance of precipitation 13% with QPF of 0.00 in [0.0 mm]. Monday Night Overcast with a low around 66°F [19°C]. S wind to around 10 mph [17 kph], with gusts to near 24 mph [39 kph]. Chance of precipitation 13% with QPF of 0.00 in [0.0 mm]. Tuesday Overcast with a high near 87°F [30°C]. W wind to around 17 mph [28 kph], with gusts to near 37 mph [59 kph]. Dewpoint near 74°F [23°C] with humidity of 94%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.7. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 68°F [20°C]. W wind to around 17 mph [28 kph], with gusts to near 37 mph [59 kph]. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 71°F [21°C]. N wind to around 15 mph [23 kph], with gusts to near 28 mph [45 kph]. Dewpoint near 74°F [23°C] with humidity of 92%. Pressure around 29.31 in [992.7 mb]. UV Index: 7.45. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 52°F [11°C]. N wind to around 15 mph [23 kph], with gusts to near 28 mph [45 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Monticello, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 9.9 mm | 0.39 in

Saturday Night: 9.9 mm | 0.39 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

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

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

Tonight: SSW @ 12 kph | 7 mph

Friday: WSW @ 17 kph | 10 mph

Friday Night: WSW @ 17 kph | 10 mph

Saturday: W @ 33 kph | 21 mph

Saturday Night: W @ 33 kph | 21 mph

Sunday: ENE @ 12 kph | 7 mph

Sunday Night: ENE @ 12 kph | 7 mph

Monday: S @ 17 kph | 10 mph

Monday Night: S @ 17 kph | 10 mph

Tuesday: W @ 28 kph | 17 mph

Tuesday Night: W @ 28 kph | 17 mph

Wednesday: N @ 23 kph | 15 mph

Wednesday Night: N @ 23 kph | 15 mph

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

Tonight: 95 %

Friday: 95 %

Friday Night: 95 %

Saturday: 95 %

Saturday Night: 95 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 95 %

Monday Night: 95 %

Tuesday: 94 %

Tuesday Night: 94 %

Wednesday: 92 %

Wednesday Night: 92 %

7 Day and Night - Snowfall Totals Forecast for Monticello, 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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