On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Active weather from Northern Rockies to Upper Midwest

A storm system in the northern U.S. will bring a variety of weather across several states from the Northern Rockies to the Upper Midwest on Saturday. Several inches of early-season snow are forecast in the higher elevations of Idaho and western Montana. Locally-heavy rain will accompany strong thunderstorms in the northern Plains and Upper Midwest.
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Current conditions at

Marshalltown, Marshalltown Municipal Airport (KMIW)

Lat: 42.11°NLon: 92.92°WElev: 971ft.

Fair

76°F

24°C

Humidity 88%
Wind Speed SE 5 mph
Barometer 29.99 in (1014.5 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 4 Sep 11:53 pm CDT

Detailed Forecast

Rest Of Tonight
Partly cloudy. Isolated thunderstorms until midnight. Low around 70. Southeast wind around 5 mph. Chance of thunderstorms 20 percent.
Saturday
Mostly sunny. High in the upper 80s. South wind 5 to 15 mph.
Saturday Night
Partly cloudy. Low in the lower 70s. South wind around 10 mph.
Sunday
Partly sunny. A slight chance of thunderstorms in the morning...then a chance of thunderstorms in the afternoon. High in the upper 80s. South wind 10 to 15 mph with gusts to around 25 mph. Chance of thunderstorms 30 percent.
Sunday Night
Thunderstorms. Low in the upper 60s. Southwest wind 5 to 15 mph. Chance of thunderstorms 80 percent.
Labor Day
Mostly cloudy with a 20 percent chance of thunderstorms. High around 80.
Monday Night
Thunderstorms likely. Low in the mid 60s. Chance of thunderstorms 60 percent.
Tuesday
Mostly cloudy with a 50 percent chance of thunderstorms. High in the upper 70s.
Tuesday Night
Mostly cloudy with a 20 percent chance of thunderstorms. Low in the upper 50s.
Wednesday
Mostly sunny. High in the mid 70s.
Wednesday Night
Mostly clear with a 20 percent chance of thunderstorms. Low in the lower 50s.
Thursday
Mostly sunny. High in the mid 70s.
Thursday Night
Partly cloudy. Low in the lower 50s.
Friday
Mostly sunny. High around 70.



  Click Map For Detailed Forecast
1031 PM CDT FRI SEP 4 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database