Mason, IL Weather Forecast
Local 7-day forecast
Partly Cloudy
Track current conditions, temperature changes, wind, and the full daily outlook for Mason, IL in one place.
Partly cloudy. Low around 71, with temperatures rising to around 73 overnight. Wind around 0 mph.
Local Weather Overview
This forecast page for Mason, 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 15, 2026 7:24 AM CDT.
The active forecast window currently covers Jul 15 to Jul 21, 2026 for Mason, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 21, 2026
- Latest sync
- Jul 15, 2026 7:24 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Mason
Monday looks like the warmest upcoming period in Mason at 93 degrees F.
Overnight is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Tuesday at about 5 to 8 mph NW.
Precipitation is mentioned in 12 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 15, 2026 7:24 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- PAH
- Radar station
- KPAH
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 between noon and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then a chance of showers and thunderstorms. Mostly sunny. High near 87, with temperatures falling to around 85 in the afternoon. East wind 0 to 5 mph. Chance of precipitation is 60%.
A chance of showers and thunderstorms before 9pm. Partly cloudy. Low around 71, with temperatures rising to around 73 overnight. East wind around 2 mph. Chance of precipitation is 30%.
A slight chance of showers and thunderstorms between 11am and noon, then a chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. South southwest wind 0 to 5 mph. Chance of precipitation is 50%.
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Southwest wind around 3 mph. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 88. West southwest wind 2 to 6 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. West southwest wind around 3 mph.
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. West southwest wind 3 to 7 mph.
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. West southwest wind around 5 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 92. West wind around 5 mph.
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 73. Southwest wind around 3 mph.
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. Southwest wind 3 to 7 mph.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. West southwest wind around 6 mph.
Mostly sunny, with a high near 91. Northwest wind 5 to 8 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Jul 15
|
Partly Cloudy
|
71°F |
0 mph
|
|
Wednesday
Jul 15
|
Mostly Sunny then Chance Showers And Thunderstorms
|
87°F |
0 to 5 mph
E
|
|
Wednesday Night
Jul 15
|
Chance Showers And Thunderstorms then Partly Cloudy
|
71°F |
2 mph
E
|
|
Thursday
Jul 16
|
Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms
|
87°F |
0 to 5 mph
SSW
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms
|
72°F |
3 mph
SW
|
|
Friday
Jul 17
|
Slight Chance Showers And Thunderstorms
|
88°F |
2 to 6 mph
WSW
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
72°F |
3 mph
WSW
|
|
Saturday
Jul 18
|
Chance Showers And Thunderstorms
|
91°F |
3 to 7 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms then Partly Cloudy
|
74°F |
5 mph
WSW
|
|
Sunday
Jul 19
|
Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
5 mph
W
|
|
Sunday Night
Jul 19
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
3 mph
SW
|
|
Monday
Jul 20
|
Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
3 to 7 mph
SW
|
|
Monday Night
Jul 20
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
74°F |
6 mph
WSW
|
|
Tuesday
Jul 21
|
Mostly Sunny
|
91°F |
5 to 8 mph
NW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mason.