Plymouth, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Plymouth, IL in one place.
Showers and thunderstorms likely after 7am. Mostly sunny, with a high near 90. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Plymouth, 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: Jul 15, 2026 2:50 AM CDT.
The active forecast window currently covers Jul 17 to Jul 21, 2026 for Plymouth, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 2:50 AM CDT
- Forecast office
- DVN
- Source
- NOAA / NWS
Daily Outlook
This Week in Plymouth
Saturday looks like the warmest upcoming period in Plymouth at 92 degrees F.
Monday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 15 mph NW.
Precipitation is mentioned in 5 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 2:50 AM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DVN
- Radar station
- KILX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 1am. Mostly clear, with a low around 74. Chance of precipitation is 60%.
Sunny, with a high near 92.
Mostly clear, with a low around 74.
Sunny, with a high near 92.
Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 92.
A slight chance of showers and thunderstorms. Mostly clear, with a low around 71.
A slight chance of rain showers before 7am. Sunny, with a high near 88.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Showers And Thunderstorms Likely
|
90°F |
5 to 10 mph
SW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely
|
74°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Sunny
|
92°F |
10 mph
SW
|
|
Saturday Night
Jul 18
|
Mostly Clear
|
74°F |
5 to 10 mph
W
|
|
Sunday
Jul 19
|
Sunny
|
92°F |
5 to 10 mph
W
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
73°F |
5 mph
SW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
92°F |
5 to 10 mph
W
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
71°F |
5 to 10 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Rain Showers then Sunny
|
88°F |
5 to 15 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Plymouth.