Mason, 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 Mason, IL in one place.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Partly sunny, with a high near 81. Southwest wind around 12 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
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: Apr 15, 2026 4:37 AM CDT.
The active forecast window currently covers Apr 16 to Apr 21, 2026 for Mason, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 16 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 4:37 AM CDT
- Forecast office
- PAH
- Source
- NOAA / NWS
Daily Outlook
This Week in Mason
Friday looks like the warmest upcoming period in Mason at 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 41 degrees F.
The strongest winds are forecast for Saturday at about 14 mph W.
Precipitation is mentioned in 7 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 4:37 AM CDT
- Coverage
- 6 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
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Mostly clear, with a low around 61. South southwest wind 3 to 8 mph. Chance of precipitation is 70%.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86. South wind 5 to 12 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. South wind around 12 mph, with gusts as high as 21 mph.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms likely. Mostly cloudy, with a high near 72. West wind around 14 mph, with gusts as high as 24 mph.
Showers and thunderstorms likely. Partly cloudy, with a low around 41. Northwest wind 7 to 13 mph, with gusts as high as 21 mph.
A slight chance of rain showers before 7am. Sunny, with a high near 65. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Clear, with a low around 41. North wind 3 to 7 mph.
Sunny, with a high near 70. South southeast wind 3 to 8 mph.
Mostly clear, with a low around 48. South wind around 6 mph.
Sunny, with a high near 76. South southwest wind 7 to 12 mph, with gusts as high as 20 mph.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
81°F |
12 mph
SW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
61°F |
3 to 8 mph
SSW
|
|
Friday
Apr 17
|
Mostly Sunny then Chance Showers And Thunderstorms
|
86°F |
5 to 12 mph
S
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms
|
60°F |
12 mph
S
|
|
Saturday
Apr 18
|
Chance Showers And Thunderstorms
|
72°F |
14 mph
W
|
|
Saturday Night
Apr 18
|
Showers And Thunderstorms Likely
|
41°F |
7 to 13 mph
NW
|
|
Sunday
Apr 19
|
Slight Chance Rain Showers then Sunny
|
65°F |
6 to 10 mph
NW
|
|
Sunday Night
Apr 19
|
Clear
|
41°F |
3 to 7 mph
N
|
|
Monday
Apr 20
|
Sunny
|
70°F |
3 to 8 mph
SSE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
48°F |
6 mph
S
|
|
Tuesday
Apr 21
|
Sunny
|
76°F |
7 to 12 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mason.