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

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

91°F

33°C

Humidity	61%
Wind Speed	S 10 mph
Barometer	29.98 in
Dewpoint	75°F (24°C)
Visibility	10.00 mi
Heat Index	103°F (39°C)
Last update	17 Aug 4:35 pm CDT

More Information:

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

Extended Forecast for

2 Miles WNW Deep River IA

This Afternoon
High: 93 °F
Sunny
Tonight
Low: 72 °F
Mostly Clear
then Slight
Chance
T-storms
Monday
High: 89 °F
Chance
T-storms
Monday Night
Low: 70 °F
Chance
T-storms
Tuesday
High: 85 °F
Slight Chance
T-storms
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 80 °F
Mostly Sunny
Wednesday Night
Low: 61 °F
Mostly Clear
Thursday
High: 79 °F
Sunny

Detailed Forecast

This Afternoon

Sunny, with a high near 93. Heat index values as high as 103. South wind around 7 mph.

Tonight

A 20 percent chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 72. South southeast wind around 6 mph.

Monday

A chance of showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 89. South southeast wind 6 to 9 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A 30 percent chance of showers and thunderstorms, mainly after 7pm. Mostly cloudy, with a low around 70. Southwest wind 3 to 5 mph. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 85. North wind 3 to 6 mph.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Mostly sunny, with a high near 80.

Wednesday Night

Mostly clear, with a low around 61.

Thursday

Sunny, with a high near 79.

Thursday Night

Mostly clear, with a low around 60.