Erin Strengthens to a Hurricane; Heavy Rainfall Possible in Puerto Rico and the Virgin Islands, the Upper Midwest, South Texas

Hurricane Erin may bring isolated flash and urban flooding, landslides or mudslides, and possible tropical storm conditions to Puerto Rico and the U.S. Virgin Islands this weekend. Scattered thunderstorms and heavy rainfall may bring areas of flooding this weekend over the Upper Midwest. A tropical disturbance will bring locally heavy rain and mainly urban flash flooding to far southern Texas. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

73°F

23°C

Humidity	99%
Wind Speed	Calm
Barometer	30.03 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Last update	17 Aug 4:55 am CDT

More Information:

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

Extended Forecast for

5 Miles NNE New Sharon IA

Today
High: 92 °F
Sunny
Tonight
Low: 72 °F
Mostly Clear
then Slight
Chance
T-storms
Monday
High: 91 °F
Chance
T-storms
Monday Night
Low: 71 °F
Chance
T-storms
Tuesday
High: 84 °F
Slight Chance
T-storms
Tuesday Night
Low: 64 °F
Slight Chance
T-storms then
Partly Cloudy
Wednesday
High: 79 °F
Mostly Sunny
Wednesday Night
Low: 61 °F
Mostly Clear
Thursday
High: 79 °F
Sunny

Detailed Forecast

Today

Sunny, with a high near 92. Heat index values as high as 103. Calm wind becoming south around 5 mph in the morning.

Tonight

A 20 percent chance of showers and thunderstorms after 4am. Mostly clear, with a low around 72. Calm wind becoming east southeast around 5 mph after midnight.

Monday

A 30 percent chance of showers and thunderstorms, mainly after 7am. Mostly sunny, with a high near 91. Heat index values as high as 101. South southeast wind 5 to 7 mph becoming southwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday

A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 4pm, then a slight chance of showers and thunderstorms after 4pm. Mostly sunny, with a high near 84. North northwest wind 3 to 6 mph. Chance of precipitation is 20%.

Tuesday Night

A slight chance of thunderstorms before 7pm. Partly cloudy, with a low around 64. Chance of precipitation is 10%.

Wednesday

Mostly sunny, with a high near 79.

Wednesday Night

Mostly clear, with a low around 61.

Thursday

Sunny, with a high near 79.

Thursday Night

Mostly clear, with a low around 61.

Friday

Sunny, with a high near 83.