Hermon, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Hermon, IL in one place.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 65.
Local Weather Overview
This forecast page for Hermon, 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 13, 2026 11:25 AM CDT.
The active forecast window currently covers Apr 18 to Apr 19, 2026 for Hermon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 19, 2026
- Latest sync
- Apr 13, 2026 11:25 AM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Hermon
Saturday looks like the warmest upcoming period in Hermon at 65 degrees F.
Saturday Night is the coolest period ahead with temperatures near 37 degrees F.
The strongest winds are forecast for Saturday at about 13 to 16 mph W.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 13, 2026 11:25 AM CDT
- Coverage
- 2 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- Radar station
- KDVN
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 1am. Mostly cloudy, with a low around 37.
Mostly sunny, with a high near 59.
Mostly clear, with a low around 39.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
65°F |
13 to 16 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
37°F |
8 to 14 mph
WNW
|
|
Sunday
Apr 19
|
Mostly Sunny
|
59°F |
8 to 12 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
39°F |
8 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Hermon.