Heman, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Heman, IL in one place.
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 103. West southwest wind around 9 mph, with gusts as high as 16 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Local Weather Overview
This forecast page for Heman, 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: Sep 15, 2026 5:18 PM CDT.
The active forecast window currently covers Sep 15 to Sep 21, 2026 for Heman, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Sep 15 to Sep 21, 2026
- Latest sync
- Sep 15, 2026 5:18 PM CDT
- Forecast office
- ILX
- Source
- NOAA / NWS
Daily Outlook
This Week in Heman
This Afternoon looks like the warmest upcoming period in Heman at 96 degrees F.
Monday Night is the coolest period ahead with temperatures near 60 degrees F.
The strongest winds are forecast for Saturday at about 12 to 15 mph SW.
Precipitation is mentioned in 11 upcoming forecast periods.
Forecast Details
- Last updated
- Sep 15, 2026 5:18 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- ILX
- 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, then showers and thunderstorms likely between 1am and 3am, then showers and thunderstorms likely between 3am and 4am, then showers and thunderstorms likely. Mostly cloudy, with a low around 71. East wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 85. East northeast wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Southeast wind around 6 mph. New rainfall amounts between a tenth and quarter of an inch possible.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 90. West wind around 7 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Partly cloudy, with a low around 68. Northeast wind around 8 mph.
Mostly sunny, with a high near 90. Southeast wind around 9 mph.
Partly cloudy, with a low around 69.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
A slight chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 69.
A chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 86.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
A chance of rain showers. Partly sunny, with a high near 79.
A slight chance of rain showers before 1am. Mostly cloudy, with a low around 60.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Sep 15
|
Chance Showers And Thunderstorms
|
96°F |
9 mph
WSW
|
|
Tonight
Sep 15
|
Showers And Thunderstorms Likely
|
71°F |
6 mph
E
|
|
Wednesday
Sep 16
|
Showers And Thunderstorms
|
85°F |
6 mph
ENE
|
|
Wednesday Night
Sep 16
|
Slight Chance Showers And Thunderstorms
|
72°F |
6 mph
SE
|
|
Thursday
Sep 17
|
Chance Showers And Thunderstorms
|
90°F |
7 mph
W
|
|
Thursday Night
Sep 17
|
Partly Cloudy
|
68°F |
8 mph
NE
|
|
Friday
Sep 18
|
Mostly Sunny
|
90°F |
9 mph
SE
|
|
Friday Night
Sep 18
|
Partly Cloudy
|
69°F |
8 to 12 mph
SE
|
|
Saturday
Sep 19
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
12 to 15 mph
SW
|
|
Saturday Night
Sep 19
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
69°F |
6 to 10 mph
SW
|
|
Sunday
Sep 20
|
Chance Showers And Thunderstorms
|
86°F |
7 to 13 mph
N
|
|
Sunday Night
Sep 20
|
Chance Showers And Thunderstorms
|
64°F |
7 to 13 mph
NE
|
|
Monday
Sep 21
|
Chance Rain Showers
|
79°F |
8 to 14 mph
NNW
|
|
Monday Night
Sep 21
|
Slight Chance Rain Showers
|
60°F |
7 to 14 mph
N
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Heman.