Watching Hurricane Erin; Heavy Rainfall Threat for Upper Midwest; Heatrisk for Mississippi Valley

Hurricane Erin continues to track westward with its outer bands bringing heavy rainfall and gusty winds for Puerto Rico and US Virgin Islands. Life-threatening surf and rip currents are occurring and will spread across the Atlantic coasts this week. Meanwhile, heavy rainfall and possible flooding are in the forecast for upper Midwest through Monday. Heatrisk continues for the Mississippi Valley. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Thunderstorm Heavy Rain Fog/Mist

70°F

21°C

Humidity	97%
Wind Speed	NE 6 mph
Barometer	29.96 in (1013.1 mb)
Dewpoint	69°F (21°C)
Visibility	2.50 mi
Last update	18 Aug 4:53 am CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles ESE Mason City IA

Overnight
Low: 70 °F
Scattered
T-storms
Monday
High: 85 °F
Showers
Likely then
Chance
Showers
Monday Night
Low: 69 °F
Slight Chance
T-storms then
Partly Cloudy
Tuesday
High: 83 °F
Mostly Sunny
Tuesday Night
Low: 61 °F
Mostly Clear
Wednesday
High: 79 °F
Sunny
Wednesday Night
Low: 57 °F
Mostly Clear
Thursday
High: 78 °F
Sunny
Thursday Night
Low: 58 °F
Mostly Clear

Detailed Forecast

Overnight

Scattered showers and thunderstorms. Mostly cloudy, with a low around 70. East northeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

Showers and thunderstorms likely, mainly before 2pm. Cloudy, then gradually becoming mostly sunny, with a high near 85. East southeast wind 6 to 10 mph becoming west southwest in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 69. West wind around 5 mph becoming calm in the evening.

Tuesday

Mostly sunny, with a high near 83. North wind 3 to 7 mph.

Tuesday Night

Mostly clear, with a low around 61. North wind around 6 mph becoming calm after midnight.

Wednesday

Sunny, with a high near 79.

Wednesday Night

Mostly clear, with a low around 57.

Thursday

Sunny, with a high near 78.

Thursday Night

Mostly clear, with a low around 58.