Wind
15 mph
G 22 mph
SE
Local Forecast
Current conditions, 5-day forecast, and active NWS weather alerts for Mason City, IA.
Hour-by-Hour Current Observation
Cloudy
Wind
15 mph
G 22 mph
SE
UV Index
4
Moderate
Humidity
84%
Dew 73°F
Sun
5:35 AM · 8:56 PM
Rise · Set
Source: MASON CITY (KMCW). Slider scrubs the next 12 hours.
5-Day Outlook
Today
Thunderstorms
Overnight: Isolated T-storm
Today
Showers and thunderstorms likely before 2pm. Partly sunny. High near 88, with temperatures falling to around 86 in the afternoon. Southeast wind 17 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Night
A slight chance of showers and thunderstorms between 9pm and midnight. Partly cloudy. Low around 75, with temperatures rising to around 77 overnight. South southeast wind 12 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Monday
Mostly Sunny
Overnight: Chance of Thunderstorms
Monday
Sunny, with a high near 95. Heat index values as high as 106. South wind 13 to 23 mph, with gusts as high as 36 mph.
Night
A chance of showers and thunderstorms between 7pm and 10pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 76. Heat index values as high as 106. South wind 12 to 22 mph, with gusts as high as 33 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Tuesday
Partly Sunny
Overnight: Thunderstorms Likely
Tuesday
A chance of showers and thunderstorms before 7am. Mostly sunny, with a high near 94. South southwest wind 12 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Night
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Wednesday
Mostly Cloudy
Overnight: Scattered Thunderstorms Likely
Wednesday
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms between 7am and 1pm. Partly sunny, with a high near 91. Chance of precipitation is 70%.
Night
Showers and thunderstorms likely between 7pm and 1am, then a chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 60%.
Thursday
Isolated T-storm
Overnight: Chance of Scattered Thunderstorms
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. Chance of precipitation is 40%.
Mason City, IA Weather Analysis Tools
Regional Radar
Composite reflectivity with Lightning overlay.
Regional Observations
Regional & historic weather conditions near Mason City, IA.
Active Alerts
Per-location alert detail and NWS source feeds.
Storm Reports
Recent storm reports including wind, hail, and tornadoes.
Model Analysis
Interactive forecast model guidance.
Satellite Imagery
GOES-East and GOES-West, visible and infrared.