Seneca, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Seneca, IL in one place.
Sunny, with a high near 86. West wind 5 to 15 mph, with gusts as high as 25 mph.
Local Weather Overview
This forecast page for Seneca, 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: Oct 12, 2026 1:54 AM CDT.
The active forecast window currently covers Oct 13 to Oct 18, 2026 for Seneca, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 18, 2026
- Latest sync
- Oct 12, 2026 1:54 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Seneca
Tuesday looks like the warmest upcoming period in Seneca at 86 degrees F.
Friday Night is the coolest period ahead with temperatures near 38 degrees F.
The strongest winds are forecast for Friday at about 15 to 20 mph NW.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 12, 2026 1:54 AM CDT
- Coverage
- 6 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms after 7pm. Partly cloudy, with a low around 63. North northwest wind 0 to 5 mph. Chance of precipitation is 80%.
Rain showers. Mostly cloudy, with a high near 75. Chance of precipitation is 80%.
A chance of rain showers. Mostly cloudy, with a low around 57.
Rain showers likely before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 70.
Showers and thunderstorms likely. Mostly cloudy, with a low around 52.
A slight chance of rain showers before 7am. Partly sunny, with a high near 62.
Partly cloudy, with a low around 38.
Sunny, with a high near 57.
Mostly clear, with a low around 38.
Sunny, with a high near 64.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tuesday
Oct 13
|
Sunny
|
86°F |
5 to 15 mph
W
|
|
Tuesday Night
Oct 13
|
Showers And Thunderstorms
|
63°F |
0 to 5 mph
NNW
|
|
Wednesday
Oct 14
|
Rain Showers
|
75°F |
5 to 10 mph
NE
|
|
Wednesday Night
Oct 14
|
Chance Rain Showers
|
57°F |
5 to 10 mph
NE
|
|
Thursday
Oct 15
|
Rain Showers Likely
|
70°F |
10 mph
E
|
|
Thursday Night
Oct 15
|
Showers And Thunderstorms Likely
|
52°F |
5 to 15 mph
NNW
|
|
Friday
Oct 16
|
Slight Chance Rain Showers then Partly Sunny
|
62°F |
15 to 20 mph
NW
|
|
Friday Night
Oct 16
|
Partly Cloudy
|
38°F |
10 to 15 mph
NW
|
|
Saturday
Oct 17
|
Sunny
|
57°F |
5 mph
NNW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
38°F |
0 to 5 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
64°F |
5 to 10 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Seneca.
