Mark, Illinois 7 Day & Night Forecast & Conditions

Current Conditions

Maps Alerts Climate Index

Clear 82°F 28°C Heat Index: 86°F	Observed at: Mark, IL	Elevation: 904 ft | 276 m
	Last Updated: July 16, 10:15 PM Timezone: GMT -5/-4
	Sky Conditions: Clear	Temperature: 82°F | 28°C
	Pressure: 29.29 in | 991.9 mb	Dewpoint: 70°F | 21°C
	Humidity: 67%	Wind: ESE 1 mph | ESE 2 kph
	Feels Like: 89°F | 32°C	Visibility: 51 mi | 82 km
	Lat/Long: 41.2644 | -89.25	Sunrise: 5:38 AM   Sunset: 8:28 PM

7 Day Graphical Forecast

Valid: 10:16 PM 7/16/2026

Tonight Overcast 73 °F 2% Chance Precipitation Friday Overcast 91 |74 °F 31% Chance Precipitation Saturday Showers 91 |71 °F 49% Chance Precipitation Sunday Overcast 81 |65 °F 4% Chance Precipitation Monday Overcast 85 |66 °F 38% Chance Precipitation Tuesday Overcast 84 |64 °F 38% Chance Precipitation Wednesday Overcast 70 |49 °F 3% Chance Precipitation

7 Hour Graphical Forecast

Valid: 10:16 PM 7/16/2026

10 PM Clear 82 °F 2% Chance Precipitation

11 PM Mostly Clear 80 °F 2% Chance Precipitation

12 AM Clear 79 °F 2% Chance Precipitation

1 AM Clear 78 °F 1% Chance Precipitation

2 AM Clear 77 °F 2% Chance Precipitation

3 AM Clear 76 °F 3% Chance Precipitation

4 AM Clear 75 °F 7% Chance Precipitation

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

7 Day & Night Weather Forecast for Mark, IL - (Fahrenheit & Celsius) Valid: 10:16 PM 7/16/2026 Tonight Overcast with a low around 73°F [23°C]. SSW wind to around 5 mph [9 kph], with gusts to near 9 mph [14 kph]. Chance of precipitation 2% with QPF of 0.00 in [0.0 mm]. Friday Overcast with a high near 91°F [33°C]. SW wind to around 14 mph [23 kph], with gusts to near 20 mph [32 kph]. Dewpoint near 70°F [21°C] with humidity of 91%. Pressure around 29.29 in [991.9 mb]. UV Index: 7.55. Chance of precipitation 31% with QPF of 0.00 in [0.0 mm]. Friday Night Overcast with a low around 74°F [24°C]. SW wind to around 14 mph [23 kph], with gusts to near 20 mph [32 kph]. Chance of precipitation 31% with QPF of 0.00 in [0.0 mm]. Saturday Showers with a high near 91°F [33°C]. WNW wind to around 15 mph [24 kph], with gusts to near 26 mph [42 kph]. Dewpoint near 70°F [21°C] with humidity of 91%. Pressure around 29.29 in [991.9 mb]. UV Index: 7.55. Chance of precipitation 49% with QPF of 0.19 in [4.8 mm]. Saturday Night Showers with a low around 71°F [22°C]. WNW wind to around 15 mph [24 kph], with gusts to near 26 mph [42 kph]. Chance of precipitation 49% with QPF of 0.19 in [4.8 mm]. Sunday Overcast with a high near 81°F [27°C]. E wind to around 8 mph [12 kph], with gusts to near 11 mph [18 kph]. Dewpoint near 70°F [21°C] with humidity of 96%. Pressure around 29.29 in [991.9 mb]. UV Index: 7.55. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Sunday Night Overcast with a low around 65°F [18°C]. E wind to around 8 mph [12 kph], with gusts to near 11 mph [18 kph]. Chance of precipitation 4% with QPF of 0.00 in [0.0 mm]. Monday Overcast with a high near 85°F [29°C]. S wind to around 12 mph [19 kph], with gusts to near 32 mph [52 kph]. Dewpoint near 70°F [21°C] with humidity of 93%. Pressure around 29.29 in [991.9 mb]. UV Index: 6.9. Chance of precipitation 38% with QPF of 0.00 in [0.0 mm]. Monday Night Overcast with a low around 66°F [19°C]. S wind to around 12 mph [19 kph], with gusts to near 32 mph [52 kph]. Chance of precipitation 38% with QPF of 0.00 in [0.0 mm]. Tuesday Overcast with a high near 84°F [29°C]. NW wind to around 15 mph [25 kph], with gusts to near 36 mph [57 kph]. Dewpoint near 70°F [21°C] with humidity of 86%. Pressure around 29.29 in [991.9 mb]. UV Index: 6.7. Chance of precipitation 38% with QPF of 0.00 in [0.0 mm]. Tuesday Night Overcast with a low around 64°F [18°C]. NW wind to around 15 mph [25 kph], with gusts to near 36 mph [57 kph]. Chance of precipitation 38% with QPF of 0.00 in [0.0 mm]. Wednesday Overcast with a high near 70°F [21°C]. N wind to around 16 mph [25 kph], with gusts to near 29 mph [47 kph]. Dewpoint near 70°F [21°C] with humidity of 85%. Pressure around 29.29 in [991.9 mb]. UV Index: 7.2. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm]. Wednesday Night Overcast with a low around 49°F [9°C]. N wind to around 16 mph [25 kph], with gusts to near 29 mph [47 kph]. Chance of precipitation 3% with QPF of 0.00 in [0.0 mm].

---

7 Day and Night - QPF Forecast for Mark, IL

Tonight: 0.0 mm | 0.00 in

Friday: 0.0 mm | 0.00 in

Friday Night: 0.0 mm | 0.00 in

Saturday: 4.8 mm | 0.19 in

Saturday Night: 4.8 mm | 0.19 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 Mark, IL

Tonight: SSW @ 9 kph | 5 mph

Friday: SW @ 23 kph | 14 mph

Friday Night: SW @ 23 kph | 14 mph

Saturday: WNW @ 24 kph | 15 mph

Saturday Night: WNW @ 24 kph | 15 mph

Sunday: E @ 12 kph | 8 mph

Sunday Night: E @ 12 kph | 8 mph

Monday: S @ 19 kph | 12 mph

Monday Night: S @ 19 kph | 12 mph

Tuesday: NW @ 25 kph | 15 mph

Tuesday Night: NW @ 25 kph | 15 mph

Wednesday: N @ 25 kph | 16 mph

Wednesday Night: N @ 25 kph | 16 mph

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

Tonight: 98 %

Friday: 91 %

Friday Night: 91 %

Saturday: 91 %

Saturday Night: 91 %

Sunday: 96 %

Sunday Night: 96 %

Monday: 93 %

Monday Night: 93 %

Tuesday: 86 %

Tuesday Night: 86 %

Wednesday: 85 %

Wednesday Night: 85 %

7 Day and Night - Snowfall Totals Forecast for Mark, 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

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