Harmony, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Harmony, IL in one place.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 84. South wind 3 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%.
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: Apr 16, 2026 1:38 PM CDT.
The active forecast window currently covers Apr 17 to Apr 22, 2026 for Harmony, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 17 to Apr 22, 2026
- Latest sync
- Apr 16, 2026 1:38 PM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Harmony
Friday looks like the warmest upcoming period in Harmony at 84 degrees F.
Saturday Night is the coolest period ahead with temperatures near 39 degrees F.
The strongest winds are forecast for Saturday at about 15 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 16, 2026 1:38 PM CDT
- Coverage
- 6 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 1am, then showers and thunderstorms. Mostly cloudy, with a low around 55. South southwest wind around 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a high near 65. West wind around 15 mph, with gusts as high as 23 mph. Chance of precipitation is 80%.
A chance of rain showers before 1am. Mostly clear, with a low around 39. Northwest wind 6 to 13 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Sunny, with a high near 64. West northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Clear, with a low around 40. East northeast wind 3 to 8 mph.
Sunny, with a high near 69. South wind around 8 mph.
Mostly clear, with a low around 50. South wind around 7 mph.
Mostly sunny, with a high near 75. South southwest wind 7 to 13 mph, with gusts as high as 20 mph.
A slight chance of rain showers after 1am. Partly cloudy, with a low around 54. Southwest wind around 8 mph.
A slight chance of rain showers before 1pm, then a slight chance of showers and thunderstorms. Sunny, with a high near 77. Southwest wind 7 to 10 mph.
A chance of showers and thunderstorms. Mostly clear, with a low around 55. South wind around 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
84°F |
3 to 14 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms
|
55°F |
13 mph
SSW
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
65°F |
15 mph
W
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
39°F |
6 to 13 mph
NW
|
|
Sunday
Apr 19
|
Sunny
|
64°F |
6 to 13 mph
WNW
|
|
Sunday Night
Apr 19
|
Clear
|
40°F |
3 to 8 mph
ENE
|
|
Monday
Apr 20
|
Sunny
|
69°F |
8 mph
S
|
|
Monday Night
Apr 20
|
Mostly Clear
|
50°F |
7 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
75°F |
7 to 13 mph
SSW
|
|
Tuesday Night
Apr 21
|
Partly Cloudy then Slight Chance Rain Showers
|
54°F |
8 mph
SW
|
|
Wednesday
Apr 22
|
Slight Chance Rain Showers then Slight Chance Showers And Thunderstorms
|
77°F |
7 to 10 mph
SW
|
|
Wednesday Night
Apr 22
|
Chance Showers And Thunderstorms
|
55°F |
8 mph
S
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Harmony.