Mason City, IA Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Mason City, IA in one place.
Rain showers likely before 7am, then showers and thunderstorms likely between 7am and 1pm, then a slight chance of showers and thunderstorms. Partly sunny, with a high near 82. South wind 12 to 17 mph, with gusts as high as 28 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Mason City, IA 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: Aug 27, 2026 6:40 PM CDT.
The active forecast window currently covers Aug 29 to Sep 2, 2026 for Mason City, IA.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Aug 29 to Sep 2, 2026
- Latest sync
- Aug 27, 2026 6:40 PM CDT
- Forecast office
- DMX
- Source
- NOAA / NWS
Daily Outlook
This Week in Mason City
Sunday looks like the warmest upcoming period in Mason City at 90 degrees F.
Tuesday Night is the coolest period ahead with temperatures near 67 degrees F.
The strongest winds are forecast for Saturday at about 12 to 17 mph S.
Precipitation is mentioned in 10 upcoming forecast periods.
Forecast Details
- Last updated
- Aug 27, 2026 6:40 PM CDT
- Coverage
- 5 days
- Time zone
- America/Chicago
- Forecast office
- DMX
- Radar station
- KDMX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 70. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
A slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 90. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 90.
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 67. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 7am, then a slight chance of showers and thunderstorms between 7am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
A slight chance of showers and thunderstorms between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Aug 29
|
Showers And Thunderstorms Likely
|
82°F |
12 to 17 mph
S
|
|
Saturday Night
Aug 29
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
70°F |
10 to 15 mph
SSE
|
|
Sunday
Aug 30
|
Slight Chance Showers And Thunderstorms
|
90°F |
10 to 14 mph
S
|
|
Sunday Night
Aug 30
|
Partly Cloudy then Slight Chance Showers And Thunderstorms
|
72°F |
7 to 10 mph
S
|
|
Monday
Aug 31
|
Slight Chance Showers And Thunderstorms
|
90°F |
7 mph
SW
|
|
Monday Night
Aug 31
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
68°F |
5 mph
ESE
|
|
Tuesday
Sep 1
|
Chance Showers And Thunderstorms
|
87°F |
5 mph
ESE
|
|
Tuesday Night
Sep 1
|
Slight Chance Showers And Thunderstorms
|
67°F |
3 mph
ESE
|
|
Wednesday
Sep 2
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
87°F |
5 mph
SSE
|
|
Wednesday Night
Sep 2
|
Slight Chance Showers And Thunderstorms
|
68°F |
5 mph
SSE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mason City.
