Marcus, IL Weather Forecast
Local 7-day forecast
Mostly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Marcus, IL in one place.
Mostly cloudy, with a low around 61. East wind around 5 mph.
Local Weather Overview
This forecast page for Marcus, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: May 30, 2026 3:47 AM CDT.
The active forecast window currently covers May 30 to Jun 5, 2026 for Marcus, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- May 30 to Jun 5, 2026
- Latest sync
- May 30, 2026 3:47 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Marcus
Thursday looks like the warmest upcoming period in Marcus at 88 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 55 degrees F.
The strongest winds are forecast for Saturday at about 5 to 10 mph E.
Precipitation is mentioned in 4 upcoming forecast periods.
Forecast Details
- Last updated
- May 30, 2026 3:47 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KDVN
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Partly sunny, with a high near 84. East wind 5 to 10 mph.
Mostly cloudy, with a low around 58. East wind 5 to 10 mph, with gusts as high as 20 mph.
Partly sunny, with a high near 81. Southeast wind around 5 mph.
A slight chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
A slight chance of rain showers before 7am. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Partly cloudy, with a low around 56.
Sunny, with a high near 85.
Mostly clear, with a low around 55.
Sunny, with a high near 86.
Mostly clear, with a low around 60.
Mostly sunny, with a high near 88.
A chance of showers and thunderstorms after 7pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
May 30
|
Mostly Cloudy
|
61°F |
5 mph
E
|
|
Saturday
May 30
|
Partly Sunny
|
84°F |
5 to 10 mph
E
|
|
Saturday Night
May 30
|
Mostly Cloudy
|
58°F |
5 to 10 mph
E
|
|
Sunday
May 31
|
Partly Sunny
|
81°F |
5 mph
SE
|
|
Sunday Night
May 31
|
Mostly Cloudy then Slight Chance Showers And Thunderstorms
|
59°F |
0 to 5 mph
E
|
|
Monday
Jun 1
|
Slight Chance Rain Showers then Mostly Sunny
|
85°F |
0 to 5 mph
E
|
|
Monday Night
Jun 1
|
Partly Cloudy
|
56°F |
0 to 5 mph
E
|
|
Tuesday
Jun 2
|
Sunny
|
85°F |
5 mph
E
|
|
Tuesday Night
Jun 2
|
Mostly Clear
|
55°F |
0 to 5 mph
E
|
|
Wednesday
Jun 3
|
Sunny
|
86°F |
0 to 5 mph
SE
|
|
Wednesday Night
Jun 3
|
Mostly Clear
|
60°F |
5 mph
S
|
|
Thursday
Jun 4
|
Mostly Sunny
|
88°F |
5 to 10 mph
S
|
|
Thursday Night
Jun 4
|
Chance Showers And Thunderstorms
|
66°F |
5 mph
S
|
|
Friday
Jun 5
|
Chance Showers And Thunderstorms
|
88°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marcus.