Marengo, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 60°F 16°C	Observed at: Marengo, IL	Elevation: 856 ft | 261 m
	Last Updated: July 29, 5:30 AM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 60°F | 16°C
	Pressure: 29.07 in | 984.3 mb	Dewpoint: 53°F | 12°C
	Humidity: 80%	Wind: NW 2 mph | NW 3 kph
	Feels Like: 60°F | 16°C	Visibility: 36.1 mi | 58.1 km
	Lat/Long: 42.2486 | -88.6083	Sunrise: 5:44 AM   Sunset: 8:17 PM

7 Day Graphical Forecast

Valid: 5:30 AM 7/29/2026

Tonight Clear 59 °F 1% Chance Precipitation Thursday Overcast 89 |61 °F 1% Chance Precipitation Friday Rain 69 |63 °F 76% Chance Precipitation Saturday Light Drizzle 76 |62 °F 76% Chance Precipitation Sunday Overcast 79 |58 °F 11% Chance Precipitation Monday Clear 79 |55 °F 4% Chance Precipitation Tuesday Clear 80 |62 °F 8% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:30 AM 7/29/2026

5 AM Clear 60 °F 0% Chance Precipitation

6 AM Clear 59 °F 0% Chance Precipitation

7 AM Clear 62 °F 0% Chance Precipitation

8 AM Clear 67 °F 0% Chance Precipitation

9 AM Clear 71 °F 0% Chance Precipitation

10 AM Clear 74 °F 0% Chance Precipitation

11 AM Clear 77 °F 0% Chance Precipitation

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

7 Day & Night Weather Forecast for Marengo, IL - (Fahrenheit & Celsius) Valid: 5:30 AM 7/29/2026 Tonight Clear with a low around 59°F [15°C]. NE wind to around 8 mph [13 kph], with gusts to near 16 mph [26 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 89°F [32°C]. SSW wind to around 7 mph [11 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 53°F [12°C] with humidity of 66%. Pressure around 29.07 in [984.3 mb]. UV Index: 6.95. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 61°F [16°C]. SSW wind to around 7 mph [11 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Friday Rain with a high near 69°F [21°C]. ESE wind to around 12 mph [20 kph], with gusts to near 21 mph [33 kph]. Dewpoint near 53°F [12°C] with humidity of 98%. Pressure around 29.07 in [984.3 mb]. UV Index: 1.85. Chance of precipitation 76% with QPF of 0.53 in [13.5 mm]. Friday Night Rain with a low around 63°F [17°C]. ESE wind to around 12 mph [20 kph], with gusts to near 21 mph [33 kph]. Chance of precipitation 76% with QPF of 0.53 in [13.5 mm]. Saturday Light Drizzle with a high near 76°F [24°C]. NE wind to around 13 mph [21 kph], with gusts to near 18 mph [29 kph]. Dewpoint near 53°F [12°C] with humidity of 98%. Pressure around 29.07 in [984.3 mb]. UV Index: 6.2. Chance of precipitation 76% with QPF of 0.08 in [1.9 mm]. Saturday Night Light Drizzle with a low around 62°F [17°C]. NE wind to around 13 mph [21 kph], with gusts to near 18 mph [29 kph]. Chance of precipitation 76% with QPF of 0.08 in [1.9 mm]. Sunday Overcast with a high near 79°F [26°C]. NE wind to around 10 mph [16 kph], with gusts to near 17 mph [28 kph]. Dewpoint near 53°F [12°C] with humidity of 95%. Pressure around 29.07 in [984.3 mb]. UV Index: 7.1. Chance of precipitation 11% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 58°F [14°C]. NE wind to around 10 mph [16 kph], with gusts to near 17 mph [28 kph]. Chance of precipitation 11% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 79°F [26°C]. S wind to around 6 mph [10 kph], with gusts to near 8 mph [13 kph]. Dewpoint near 53°F [12°C] with humidity of 89%. Pressure around 29.07 in [984.3 mb]. UV Index: 7.15. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 55°F [13°C]. S wind to around 6 mph [10 kph], with gusts to near 8 mph [13 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Tuesday Clear with a high near 80°F [27°C]. S wind to around 9 mph [15 kph], with gusts to near 15 mph [24 kph]. Dewpoint near 53°F [12°C] with humidity of 95%. Pressure around 29.07 in [984.3 mb]. UV Index: 7.15. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm]. Tuesday Night Clear with a low around 62°F [17°C]. S wind to around 9 mph [15 kph], with gusts to near 15 mph [24 kph]. Chance of precipitation 8% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Marengo, IL

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 13.5 mm | 0.53 in

Friday Night: 13.5 mm | 0.53 in

Saturday: 1.9 mm | 0.08 in

Saturday Night: 1.9 mm | 0.08 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 Marengo, IL

Tonight: NE @ 13 kph | 8 mph

Thursday: SSW @ 11 kph | 7 mph

Thursday Night: SSW @ 11 kph | 7 mph

Friday: ESE @ 20 kph | 12 mph

Friday Night: ESE @ 20 kph | 12 mph

Saturday: NE @ 21 kph | 13 mph

Saturday Night: NE @ 21 kph | 13 mph

Sunday: NE @ 16 kph | 10 mph

Sunday Night: NE @ 16 kph | 10 mph

Monday: S @ 10 kph | 6 mph

Monday Night: S @ 10 kph | 6 mph

Tuesday: S @ 15 kph | 9 mph

Tuesday Night: S @ 15 kph | 9 mph

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

Tonight: 80 %

Thursday: 66 %

Thursday Night: 66 %

Friday: 98 %

Friday Night: 98 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 95 %

Sunday Night: 95 %

Monday: 89 %

Monday Night: 89 %

Tuesday: 95 %

Tuesday Night: 95 %

7 Day and Night - Snowfall Totals Forecast for Marengo, 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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