Hermon, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Hermon, IL in one place.
A chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 90. Heat index values as high as 102. Southwest wind 0 to 6 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
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: Jul 16, 2026 4:53 PM CDT.
The active forecast window currently covers Jul 17 to Jul 22, 2026 for Hermon, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 17 to Jul 22, 2026
- Latest sync
- Jul 16, 2026 4:53 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Hermon
Saturday looks like the warmest upcoming period in Hermon at 92 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Tuesday at about 6 to 13 mph NW.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 16, 2026 4:53 PM CDT
- Coverage
- 6 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 showers and thunderstorms before 8pm. Partly cloudy, with a low around 72. Southwest wind 2 to 6 mph, with gusts as high as 16 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms. Sunny, with a high near 92. West wind 6 to 10 mph, with gusts as high as 17 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 68. North wind 2 to 6 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth of an inch possible.
Sunny, with a high near 86. East wind around 5 mph.
Mostly clear, with a low around 68.
A slight chance of showers and thunderstorms after 7am. Mostly sunny, with a high near 91.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72.
A slight chance of showers and thunderstorms before 7am. Sunny, with a high near 88.
Mostly clear, with a low around 62.
Sunny, with a high near 80.
Mostly clear, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Jul 17
|
Chance Showers And Thunderstorms
|
90°F |
0 to 6 mph
SW
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms then Partly Cloudy
|
72°F |
2 to 6 mph
SW
|
|
Saturday
Jul 18
|
Sunny then Chance Showers And Thunderstorms
|
92°F |
6 to 10 mph
W
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
68°F |
2 to 6 mph
N
|
|
Sunday
Jul 19
|
Sunny
|
86°F |
5 mph
E
|
|
Sunday Night
Jul 19
|
Mostly Clear
|
68°F |
3 mph
SE
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
91°F |
3 to 8 mph
S
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms
|
72°F |
7 mph
W
|
|
Tuesday
Jul 21
|
Slight Chance Showers And Thunderstorms then Sunny
|
88°F |
6 to 13 mph
NW
|
|
Tuesday Night
Jul 21
|
Mostly Clear
|
62°F |
5 to 13 mph
N
|
|
Wednesday
Jul 22
|
Sunny
|
80°F |
5 to 8 mph
NNE
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
60°F |
0 to 5 mph
ENE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Hermon.