Marissa, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Marissa, IL in one place.
Showers and thunderstorms likely. Partly sunny, with a high near 64. Chance of precipitation is 70%.
Local Weather Overview
This forecast page for Marissa, 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: Apr 15, 2026 8:28 PM CDT.
The active forecast window currently covers Apr 18 to Apr 22, 2026 for Marissa, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 22, 2026
- Latest sync
- Apr 15, 2026 8:28 PM CDT
- Forecast office
- LSX
- Source
- NOAA / NWS
Daily Outlook
This Week in Marissa
Wednesday looks like the warmest upcoming period in Marissa at 77 degrees F.
Saturday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Saturday at about 15 mph W.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 8:28 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- LSX
- Radar station
- KLSX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A chance of rain showers before 7pm. Partly cloudy, with a low around 40. Chance of precipitation is 40%.
Sunny, with a high near 65.
Clear, with a low around 41.
Sunny, with a high near 70.
Mostly clear, with a low around 50.
Sunny, with a high near 76.
Partly cloudy, with a low around 55.
A slight chance of rain showers between 7am and 1pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 77. Chance of precipitation is 20%.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely
|
64°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers then Partly Cloudy
|
40°F |
6 to 13 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
65°F |
6 to 10 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
41°F |
5 to 8 mph
NE
|
|
Monday
Apr 20
|
Sunny
|
70°F |
6 to 9 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
50°F |
8 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
76°F |
8 to 13 mph
S
|
|
Tuesday Night
Apr 21
|
Partly Cloudy
|
55°F |
10 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
7 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Marissa.