Marion, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 67°F 19°C	Observed at: Marion, IL	Elevation: 420 ft | 128 m
	Last Updated: July 29, 5:30 AM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 67°F | 19°C
	Pressure: 29.44 in | 996.8 mb	Dewpoint: 64°F | 18°C
	Humidity: 90%	Wind: NNE 5 mph | NNE 8 kph
	Feels Like: 69°F | 21°C	Visibility: 27.5 mi | 44.3 km
	Lat/Long: 37.7306 | -88.9331	Sunrise: 5:57 AM   Sunset: 8:07 PM

7 Day Graphical Forecast

Valid: 5:32 AM 7/29/2026

Tonight Foggy 66 °F 1% Chance Precipitation Thursday Overcast 86 |64 °F 0% Chance Precipitation Friday Light Showers 85 |65 °F 70% Chance Precipitation Saturday Drizzle 74 |67 °F 70% Chance Precipitation Sunday Mostly Clear 84 |62 °F 41% Chance Precipitation Monday Clear 86 |63 °F 27% Chance Precipitation Tuesday Partly Cloudy 90 |63 °F 23% Chance Precipitation

7 Hour Graphical Forecast

Valid: 5:32 AM 7/29/2026

5 AM Clear 67 °F 0% Chance Precipitation

6 AM Clear 66 °F 0% Chance Precipitation

7 AM Clear 67 °F 1% Chance Precipitation

8 AM Clear 69 °F 1% Chance Precipitation

9 AM Clear 72 °F 1% Chance Precipitation

10 AM Clear 76 °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 Marion, IL - (Fahrenheit & Celsius) Valid: 5:32 AM 7/29/2026 Tonight Foggy with a low around 66°F [19°C]. NNE wind to around 8 mph [13 kph], with gusts to near 22 mph [35 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 86°F [30°C]. E wind to around 7 mph [12 kph], with gusts to near 14 mph [23 kph]. Dewpoint near 64°F [18°C] with humidity of 83%. Pressure around 29.44 in [996.8 mb]. UV Index: 7.25. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 64°F [18°C]. E wind to around 7 mph [12 kph], with gusts to near 14 mph [23 kph]. Chance of precipitation 0% with QPF of 0.00 in [0.0 mm]. Friday Light Showers with a high near 85°F [30°C]. SSE wind to around 12 mph [19 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 64°F [18°C] with humidity of 94%. Pressure around 29.44 in [996.8 mb]. UV Index: 6.55. Chance of precipitation 70% with QPF of 0.18 in [4.5 mm]. Friday Night Light Showers with a low around 65°F [18°C]. SSE wind to around 12 mph [19 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 70% with QPF of 0.18 in [4.5 mm]. Saturday Drizzle with a high near 74°F [23°C]. N wind to around 14 mph [22 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 64°F [18°C] with humidity of 98%. Pressure around 29.44 in [996.8 mb]. UV Index: 1.25. Chance of precipitation 70% with QPF of 0.13 in [3.4 mm]. Saturday Night Drizzle with a low around 67°F [19°C]. N wind to around 14 mph [22 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 70% with QPF of 0.13 in [3.4 mm]. Sunday Mostly Clear with a high near 84°F [29°C]. NNE wind to around 15 mph [24 kph], with gusts to near 27 mph [44 kph]. Dewpoint near 64°F [18°C] with humidity of 98%. Pressure around 29.44 in [996.8 mb]. UV Index: 7.45. Chance of precipitation 41% with QPF of 0.00 in [0.0 mm]. Sunday Night Mostly Clear with a low around 62°F [17°C]. NNE wind to around 15 mph [24 kph], with gusts to near 27 mph [44 kph]. Chance of precipitation 41% with QPF of 0.00 in [0.0 mm]. Monday Clear with a high near 86°F [30°C]. ENE wind to around 11 mph [18 kph], with gusts to near 16 mph [25 kph]. Dewpoint near 64°F [18°C] with humidity of 95%. Pressure around 29.44 in [996.8 mb]. UV Index: 7.5. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Monday Night Clear with a low around 63°F [17°C]. ENE wind to around 11 mph [18 kph], with gusts to near 16 mph [25 kph]. Chance of precipitation 27% with QPF of 0.00 in [0.0 mm]. Tuesday Partly Cloudy with a high near 90°F [32°C]. E wind to around 8 mph [13 kph], with gusts to near 13 mph [21 kph]. Dewpoint near 64°F [18°C] with humidity of 91%. Pressure around 29.44 in [996.8 mb]. UV Index: 7.5. Chance of precipitation 23% with QPF of 0.00 in [0.0 mm]. Tuesday Night Partly Cloudy with a low around 63°F [17°C]. E wind to around 8 mph [13 kph], with gusts to near 13 mph [21 kph]. Chance of precipitation 23% with QPF of 0.00 in [0.0 mm].

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7 Day and Night - QPF Forecast for Marion, IL

Tonight: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 4.5 mm | 0.18 in

Friday Night: 4.5 mm | 0.18 in

Saturday: 3.4 mm | 0.13 in

Saturday Night: 3.4 mm | 0.13 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 Marion, IL

Tonight: NNE @ 13 kph | 8 mph

Thursday: E @ 12 kph | 7 mph

Thursday Night: E @ 12 kph | 7 mph

Friday: SSE @ 19 kph | 12 mph

Friday Night: SSE @ 19 kph | 12 mph

Saturday: N @ 22 kph | 14 mph

Saturday Night: N @ 22 kph | 14 mph

Sunday: NNE @ 24 kph | 15 mph

Sunday Night: NNE @ 24 kph | 15 mph

Monday: ENE @ 18 kph | 11 mph

Monday Night: ENE @ 18 kph | 11 mph

Tuesday: E @ 13 kph | 8 mph

Tuesday Night: E @ 13 kph | 8 mph

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

Tonight: 95 %

Thursday: 83 %

Thursday Night: 83 %

Friday: 94 %

Friday Night: 94 %

Saturday: 98 %

Saturday Night: 98 %

Sunday: 98 %

Sunday Night: 98 %

Monday: 95 %

Monday Night: 95 %

Tuesday: 91 %

Tuesday Night: 91 %

7 Day and Night - Snowfall Totals Forecast for Marion, 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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