National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Sinlaku Continues to Impact the Marianas; Severe Weather from the Central US to the Northeast; Late-Season Snow in the Northwest

Sinlaku continues to bring destructive winds, widespread heavy rain/flooding, and storm surge to the Marianas. Showers and severe thunderstorms are expected from the Northeast to the Mid-Mississippi Valley and to the Central/Southern Plains through Thursday. A front will produce late-season snowfall over the Cascades and Northern Rockies and coastal rain over the Northwest Coast through Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Denison (KDNS)

Lat: 41.98°NLon: 95.38°WElev: 1273ft.

Fair

66°F

19°C

Humidity 73%
Wind Speed NE 13 mph
Barometer 29.70 in
Dewpoint 57°F (14°C)
Visibility 9.00 mi
Last update 15 Apr 3:15 pm CDT
Extended Forecast for

Mapleton IA

Severe T-storm Watch April 15, 03:23pm until April 15, 07:00pm
Click here for hazard details and duration
Severe T-storm Watch
  •  
    Severe T-storm Watch April 15, 03:23pm until April 15, 07:00pm

    NOW until 7:00pm Wed

    Severe T-storm Watch

  • This Afternoon

    High: 67 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 45 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Light south wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Increasing clouds, with a low around 54. South southeast wind 10 to 14 mph, with gusts as high as 28 mph.

    Low: 54 °F

    Increasing
    Clouds

  • Friday

    Friday: A 30 percent chance of showers. Partly sunny, with a high near 72. Breezy, with a south wind 14 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Chance
    Showers and
    Breezy

  • Friday Night

    Friday Night: A slight chance of rain showers before 4am, then a slight chance of snow showers. Partly cloudy, with a low around 32. Breezy, with a north northwest wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.

    Low: 32 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Saturday

    Saturday: A 10 percent chance of snow showers before 7am. Sunny, with a high near 51. Northwest wind 11 to 17 mph, with gusts as high as 32 mph.

    High: 51 °F

    Slight Chance
    Snow Showers
    then Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 30. Northwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 25 mph.

    Low: 30 °F

    Mostly Clear

Detailed Forecast

This Afternoon
A 40 percent chance of showers and thunderstorms. Some of the storms could be severe. Mostly cloudy, with a steady temperature around 67. North wind around 7 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A slight chance of showers and thunderstorms before 7pm, then a slight chance of showers between 7pm and 9pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming mostly clear, with a low around 45. North northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 81. Light south wind becoming south southwest 10 to 15 mph in the morning. Winds could gust as high as 26 mph.
Thursday Night
Increasing clouds, with a low around 54. South southeast wind 10 to 14 mph, with gusts as high as 28 mph.
Friday
A 30 percent chance of showers. Partly sunny, with a high near 72. Breezy, with a south wind 14 to 18 mph becoming northwest in the afternoon. Winds could gust as high as 32 mph. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain showers before 4am, then a slight chance of snow showers. Partly cloudy, with a low around 32. Breezy, with a north northwest wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 20%.
Saturday
A 10 percent chance of snow showers before 7am. Sunny, with a high near 51. Northwest wind 11 to 17 mph, with gusts as high as 32 mph.
Saturday Night
Mostly clear, with a low around 30. Northwest wind 9 to 14 mph becoming light after midnight. Winds could gust as high as 25 mph.
Sunday
Sunny, with a high near 61. Northwest wind 5 to 8 mph.
Sunday Night
Mostly clear, with a low around 39. North northeast wind 6 to 9 mph becoming southeast after midnight. Winds could gust as high as 18 mph.
Monday
Sunny, with a high near 74. South wind 10 to 16 mph, with gusts as high as 28 mph.
Monday Night
Mostly clear, with a low around 48. South southwest wind 11 to 14 mph, with gusts as high as 23 mph.
Tuesday
Sunny, with a high near 75. South southwest wind 10 to 14 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 50. Southeast wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 75. South southeast wind 8 to 15 mph, with gusts as high as 26 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mapleton IA
 42.18°N 95.79°W (Elev. 1135 ft)
Last Update:
3:17 pm CDT Apr 15, 2026
Forecast Valid:
3pm CDT Apr 15, 2026-6pm CDT Apr 22, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation