Machesney Park, IL Weather Forecast
Local 7-day forecast
Patchy Fog then Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Machesney Park, IL in one place.
Patchy fog before 8am. Sunny, with a high near 96. Heat index values as high as 100. Northwest wind 0 to 5 mph.
Local Weather Overview
This forecast page for Machesney Park, 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 14, 2026 9:01 AM CDT.
The active forecast window currently covers Jul 14 to Jul 20, 2026 for Machesney Park, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 14 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 9:01 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Machesney Park
Today looks like the warmest upcoming period in Machesney Park at 96 degrees F.
Monday Night is the coolest period ahead with temperatures near 63 degrees F.
The strongest winds are forecast for Friday at about 0 to 10 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 9:01 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KMKX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Clear, with a low around 71. Heat index values as high as 100. West wind around 5 mph.
Sunny, with a high near 96. Heat index values as high as 103. West northwest wind around 5 mph.
Mostly clear, with a low around 72. Heat index values as high as 103. South southwest wind 0 to 5 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 94. West southwest wind 0 to 5 mph, with gusts as high as 10 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 71. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 91.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 68.
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87.
A chance of showers and thunderstorms. Mostly clear, with a low around 65.
A chance of rain showers before 7am. Sunny, with a high near 85.
A slight chance of rain showers after 7pm. Partly cloudy, with a low around 63.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 14
|
Patchy Fog then Sunny
|
96°F |
0 to 5 mph
NW
|
|
Tonight
Jul 14
|
Clear
|
71°F |
5 mph
W
|
|
Wednesday
Jul 15
|
Sunny
|
96°F |
5 mph
WNW
|
|
Wednesday Night
Jul 15
|
Mostly Clear
|
72°F |
0 to 5 mph
SSW
|
|
Thursday
Jul 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
94°F |
0 to 5 mph
WSW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
0 to 5 mph
ESE
|
|
Friday
Jul 17
|
Slight Chance Rain Showers then Chance Showers And Thunderstorms
|
91°F |
0 to 10 mph
S
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
71°F |
5 mph
S
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
90°F |
5 to 10 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
68°F |
5 to 10 mph
NW
|
|
Sunday
Jul 19
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
N
|
|
Sunday Night
Jul 19
|
Chance Showers And Thunderstorms
|
65°F |
5 to 10 mph
ESE
|
|
Monday
Jul 20
|
Chance Rain Showers then Sunny
|
85°F |
5 to 10 mph
WNW
|
|
Monday Night
Jul 20
|
Slight Chance Rain Showers
|
63°F |
0 to 10 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Machesney Park.