Marion, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Mostly Clear 76°F 24°C Heat Index: 76°F	Observed at: Marion, IL	Elevation: 420 ft | 128 m
	Last Updated: July 27, 2:15 AM Timezone: GMT -5/-4
	Sky Conditions: Mostly Clear	Temperature: 76°F | 24°C
	Pressure: 29.43 in | 996.5 mb	Dewpoint: 72°F | 22°C
	Humidity: 88%	Wind: SW 6 mph | SW 10 kph
	Feels Like: 83°F | 28°C	Visibility: 30.4 mi | 48.9 km
	Lat/Long: 37.7306 | -88.9331	Sunrise: 5:55 AM   Sunset: 8:08 PM

7 Day Graphical Forecast

Valid: 3:28 PM 7/29/2026

Tonight Rain 75 °F 17% Chance Precipitation Tuesday Overcast 91 |74 °F 15% Chance Precipitation Wednesday Clear 88 |66 °F 15% Chance Precipitation Thursday Overcast 90 |63 °F 1% Chance Precipitation Friday Showers 80 |66 °F 39% Chance Precipitation Saturday Showers 69 |65 °F 39% Chance Precipitation Sunday Light Drizzle 82 |63 °F 15% Chance Precipitation

7 Hour Graphical Forecast

Valid: 3:28 PM 7/29/2026

3 PM Clear 88 °F 2% Chance Precipitation

4 PM Clear 87 °F 2% Chance Precipitation

5 PM Clear 86 °F 2% Chance Precipitation

6 PM Clear 84 °F 2% Chance Precipitation

7 PM Clear 80 °F 2% Chance Precipitation

8 PM Clear 73 °F 1% Chance Precipitation

9 PM Clear 70 °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: 3:28 PM 7/29/2026 Tonight Rain with a low around 75°F [24°C]. SW wind to around 10 mph [16 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 17% with QPF of 0.24 in [6.1 mm]. Tuesday Overcast with a high near 91°F [33°C]. NW wind to around 11 mph [17 kph], with gusts to near 23 mph [37 kph]. Dewpoint near 72°F [22°C] with humidity of 90%. Pressure around 29.43 in [996.5 mb]. UV Index: 5.3. Chance of precipitation 15% with QPF of 0.01 in [0.2 mm]. Tuesday Night Overcast with a low around 74°F [23°C]. NW wind to around 11 mph [17 kph], with gusts to near 23 mph [37 kph]. Chance of precipitation 15% with QPF of 0.01 in [0.2 mm]. Wednesday Clear with a high near 88°F [31°C]. NE wind to around 11 mph [18 kph], with gusts to near 16 mph [26 kph]. Dewpoint near 72°F [22°C] with humidity of 96%. Pressure around 29.43 in [996.5 mb]. UV Index: 7.7. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Wednesday Night Clear with a low around 66°F [19°C]. NE wind to around 11 mph [18 kph], with gusts to near 16 mph [26 kph]. Chance of precipitation 15% with QPF of 0.00 in [0.0 mm]. Thursday Overcast with a high near 90°F [32°C]. E wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Dewpoint near 72°F [22°C] with humidity of 92%. Pressure around 29.43 in [996.5 mb]. UV Index: 7.65. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Thursday Night Overcast with a low around 63°F [17°C]. E wind to around 8 mph [12 kph], with gusts to near 12 mph [19 kph]. Chance of precipitation 1% with QPF of 0.00 in [0.0 mm]. Friday Showers with a high near 80°F [27°C]. SSE wind to around 14 mph [22 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 72°F [22°C] with humidity of 97%. Pressure around 29.43 in [996.5 mb]. UV Index: 6.5. Chance of precipitation 39% with QPF of 0.47 in [11.8 mm]. Friday Night Showers with a low around 66°F [19°C]. SSE wind to around 14 mph [22 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 39% with QPF of 0.47 in [11.8 mm]. Saturday Showers with a high near 69°F [21°C]. NE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Dewpoint near 72°F [22°C] with humidity of 97%. Pressure around 29.43 in [996.5 mb]. UV Index: 0.7. Chance of precipitation 39% with QPF of 0.74 in [18.7 mm]. Saturday Night Showers with a low around 65°F [19°C]. NE wind to around 11 mph [18 kph], with gusts to near 25 mph [40 kph]. Chance of precipitation 39% with QPF of 0.74 in [18.7 mm]. Sunday Light Drizzle with a high near 82°F [28°C]. NNE wind to around 14 mph [23 kph], with gusts to near 25 mph [41 kph]. Dewpoint near 72°F [22°C] with humidity of 98%. Pressure around 29.43 in [996.5 mb]. UV Index: 4.8. Chance of precipitation 15% with QPF of 0.01 in [0.3 mm]. Sunday Night Light Drizzle with a low around 63°F [17°C]. NNE wind to around 14 mph [23 kph], with gusts to near 25 mph [41 kph]. Chance of precipitation 15% with QPF of 0.01 in [0.3 mm].

---

7 Day and Night - QPF Forecast for Marion, IL

Tonight: 6.1 mm | 0.24 in

Tuesday: 0.2 mm | 0.01 in

Tuesday Night: 0.2 mm | 0.01 in

Wednesday: 0.0 mm | 0.00 in

Wednesday Night: 0.0 mm | 0.00 in

Thursday: 0.0 mm | 0.00 in

Thursday Night: 0.0 mm | 0.00 in

Friday: 11.8 mm | 0.47 in

Friday Night: 11.8 mm | 0.47 in

Saturday: 18.7 mm | 0.74 in

Saturday Night: 18.7 mm | 0.74 in

Sunday: 0.3 mm | 0.01 in

Sunday Night: 0.3 mm | 0.01 in

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

Tonight: SW @ 16 kph | 10 mph

Tuesday: NW @ 17 kph | 11 mph

Tuesday Night: NW @ 17 kph | 11 mph

Wednesday: NE @ 18 kph | 11 mph

Wednesday Night: NE @ 18 kph | 11 mph

Thursday: E @ 12 kph | 8 mph

Thursday Night: E @ 12 kph | 8 mph

Friday: SSE @ 22 kph | 14 mph

Friday Night: SSE @ 22 kph | 14 mph

Saturday: NE @ 18 kph | 11 mph

Saturday Night: NE @ 18 kph | 11 mph

Sunday: NNE @ 23 kph | 14 mph

Sunday Night: NNE @ 23 kph | 14 mph

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

Tonight: 93 %

Tuesday: 90 %

Tuesday Night: 90 %

Wednesday: 96 %

Wednesday Night: 96 %

Thursday: 92 %

Thursday Night: 92 %

Friday: 97 %

Friday Night: 97 %

Saturday: 97 %

Saturday Night: 97 %

Sunday: 98 %

Sunday Night: 98 %

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

Tonight: 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

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

Contact Us | Mobile Private Policy | Terms & Conds | Consent Preferences | Cookie Policy Never base any life decisions on weather information from this site or anywhere over the Internet. Site is dedicated to our Lord & Savior Jesus Christ | Random Quotes of Jesus Copyright © 2026 El Dorado Weather, Inc. | Site Designed By:  Webmaster Danny