National Weather Service

News Headlines

Were You Impacted By a Recent Tornado? NOAA Researchers Would Like To Hear About Your Experience
Looking for Summaries of Past Significant Local Weather Events?

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Overcast

40°F

4°C

Humidity	89%
Wind Speed	N 6 mph
Barometer	30.01 in (1016.4 mb)
Dewpoint	37°F (3°C)
Visibility	10.00 mi
Wind Chill	36°F (2°C)
Last update	1 May 4:53 am CDT

More Information:

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

Extended Forecast for

6 Miles SE Grafton IA

Frost Advisory May 2, 12:00am until May 2, 08:00am

Click here for hazard details and duration

Frost Advisory

Today
High: 54 °F
Frost then
Partly Sunny
Tonight
Low: 31 °F
Chance
Sprinkles
Saturday
High: 63 °F
Frost then
Sunny
Saturday Night
Low: 45 °F
Partly Cloudy
then Slight
Chance
Showers
Sunday
High: 71 °F
Mostly Sunny
Sunday Night
Low: 46 °F
Mostly Clear
Monday
High: 72 °F
Breezy.
Mostly Sunny
then Slight
Chance
T-storms
Monday Night
Low: 39 °F
Partly Cloudy
and Breezy
then Partly
Cloudy
Tuesday
High: 58 °F
Mostly Sunny
then Slight
Chance
Showers and
Breezy

Detailed Forecast

Today

Widespread frost before 7am. Otherwise, partly sunny, with a high near 54. North wind 5 to 13 mph.

Tonight

A chance of sprinkles before 1am. Widespread frost after 3am. Otherwise, mostly clear, with a low around 31. North wind 8 to 13 mph becoming light northwest after midnight.

Saturday

Widespread frost before 8am. Otherwise, sunny, with a high near 63. West wind 5 to 13 mph, with gusts as high as 21 mph.

Saturday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 45. Southwest wind 8 to 11 mph.

Sunday

Mostly sunny, with a high near 71. Southwest wind 10 to 13 mph becoming northwest in the afternoon.

Sunday Night

Mostly clear, with a low around 46. Northwest wind 6 to 9 mph becoming southwest after midnight.

Monday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 72. Breezy, with a southwest wind 10 to 20 mph becoming northwest in the afternoon. Winds could gust as high as 29 mph.

Monday Night

Partly cloudy, with a low around 39. Breezy, with a northwest wind 16 to 21 mph decreasing to 9 to 14 mph after midnight. Winds could gust as high as 29 mph.

Tuesday

A 20 percent chance of showers after 1pm. Mostly sunny, with a high near 58. Breezy, with a northwest wind 9 to 16 mph.

Tuesday Night

A 20 percent chance of showers. Mostly cloudy, with a low around 35. Northwest wind 6 to 15 mph.

Wednesday

A 20 percent chance of showers. Mostly sunny, with a high near 56. Breezy, with a northwest wind 8 to 16 mph.

Wednesday Night

Partly cloudy, with a low around 34. Northwest wind 6 to 15 mph.

Thursday

Sunny, with a high near 61. Northwest wind 7 to 13 mph.