National Weather Service

News Headlines

Hazardous Weather Conditions

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Light Drizzle

44°F

7°C

Humidity	95%
Wind Speed	Calm
Barometer	29.68 in
Dewpoint	43°F (6°C)
Visibility	0.25 mi
Last update	27 Dec 11:55 pm CST

More Information:

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

Extended Forecast for

Montezuma IA

Wind Advisory December 28, 09:00am until December 29, 06:00am

Dense Fog Advisory December 28, 12:13am until December 28, 09:00am

Click here for hazard details and duration

Wind Advisory

Dense Fog Advisory

Dense Fog Advisory December 28, 12:13am until December 28, 09:00am
NOW until 9:00am Sun
Dense Fog Advisory
Overnight
Low: 44 °F
Slight Chance
Rain and
Dense Fog
Sunday
High: 46 °F⇓
Wintry Mix
and Patchy
Blowing Snow
Sunday Night
Low: 10 °F
Chance Snow
and Windy
Monday
High: 17 °F
Decreasing
Clouds and
Windy
Monday Night
Low: 8 °F
Mostly Clear
and Blustery
then Mostly
Clear
Tuesday
High: 31 °F
Mostly Sunny
Tuesday Night
Low: 22 °F
Partly Cloudy
Wednesday
High: 33 °F
Mostly Cloudy

Detailed Forecast

Overnight

A slight chance of rain before 1am, then a slight chance of rain after 2am. Widespread dense fog, mainly before 2am. Otherwise, mostly cloudy, with a low around 44. Light and variable wind. Chance of precipitation is 20%.

Sunday

Rain before 1pm, then rain, snow, and sleet between 1pm and 2pm, then snow after 2pm. Patchy blowing snow between 2pm and 3pm. Areas of dense fog before 2pm. Temperature falling to around 23 by 5pm. Wind chill values as low as 5. Windy, with a northwest wind 5 to 15 mph increasing to 19 to 29 mph. Winds could gust as high as 46 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

Sunday Night

A 40 percent chance of snow, mainly before midnight. Mostly cloudy, with a low around 10. Wind chill values as low as -10. Windy, with a west northwest wind around 29 mph, with gusts as high as 48 mph. New snow accumulation of less than a half inch possible.

Monday

Mostly cloudy, then gradually becoming sunny, with a high near 17. Wind chill values as low as -10. Windy, with a northwest wind 18 to 26 mph, with gusts as high as 44 mph.

Monday Night

Mostly clear, with a low around 8. Blustery, with a northwest wind 6 to 16 mph, with gusts as high as 28 mph.

Tuesday

Mostly sunny, with a high near 31.

Tuesday Night

Partly cloudy, with a low around 22.

Wednesday

Mostly cloudy, with a high near 33.

Wednesday Night

Mostly cloudy, with a low around 14.

New Year's Day

Mostly sunny, with a high near 22.