Harmony, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Harmony, IL in one place.
A chance of showers and thunderstorms before midnight, then showers and thunderstorms likely between midnight and 3am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. South southwest wind around 6 mph. Chance of precipitation is 60%.
Local Weather Overview
This forecast page for Harmony, 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: Jun 8, 2026 11:50 PM CDT.
The active forecast window currently covers Jun 8 to Jun 15, 2026 for Harmony, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 8 to Jun 15, 2026
- Latest sync
- Jun 8, 2026 11:50 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Harmony
Wednesday looks like the warmest upcoming period in Harmony at 91 degrees F.
Sunday Night is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Thursday at about 9 to 15 mph SSW.
Precipitation is mentioned in 13 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 8, 2026 11:50 PM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KVWX
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 7am, then a chance of showers and thunderstorms between 7am and 9am, then a slight chance of showers and thunderstorms between 9am and 11am, then a chance of showers and thunderstorms between 11am and noon, then a chance of showers and thunderstorms. Partly sunny, with a high near 88. Southwest wind 6 to 10 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms between 10pm and 1am. Mostly clear, with a low around 74. South southwest wind around 7 mph. Chance of precipitation is 30%.
Sunny, with a high near 91. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 75. South southwest wind 8 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. South southwest wind 9 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7pm, then showers and thunderstorms likely. Partly cloudy, with a low around 71. West southwest wind 5 to 13 mph, with gusts as high as 20 mph.
Showers and thunderstorms likely before 7am, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Northwest wind around 6 mph.
A chance of rain showers. Mostly clear, with a low around 68. East southeast wind around 3 mph.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 87. South southwest wind around 5 mph.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 70. Southwest wind around 3 mph.
A chance of rain showers before 7am, then a chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 85. West northwest wind around 7 mph.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 66. North wind 2 to 6 mph.
A chance of rain showers before 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 81. North northwest wind 5 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Jun 8
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
70°F |
6 mph
SSW
|
|
Tuesday
Jun 9
|
Chance Showers And Thunderstorms
|
88°F |
6 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
74°F |
7 mph
SSW
|
|
Wednesday
Jun 10
|
Sunny
|
91°F |
7 to 13 mph
SSW
|
|
Wednesday Night
Jun 10
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
75°F |
8 to 13 mph
SSW
|
|
Thursday
Jun 11
|
Chance Showers And Thunderstorms
|
89°F |
9 to 15 mph
SSW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
71°F |
5 to 13 mph
WSW
|
|
Friday
Jun 12
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
87°F |
6 mph
NW
|
|
Friday Night
Jun 12
|
Chance Rain Showers
|
68°F |
3 mph
ESE
|
|
Saturday
Jun 13
|
Chance Rain Showers
|
87°F |
5 mph
SSW
|
|
Saturday Night
Jun 13
|
Chance Showers And Thunderstorms
|
70°F |
3 mph
SW
|
|
Sunday
Jun 14
|
Chance Showers And Thunderstorms
|
85°F |
7 mph
WNW
|
|
Sunday Night
Jun 14
|
Chance Showers And Thunderstorms
|
66°F |
2 to 6 mph
N
|
|
Monday
Jun 15
|
Chance Rain Showers
|
81°F |
5 to 8 mph
NNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harmony.