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

Heavy Rainfall Possible in the Upper Midwest, South Texas, and Puerto Rico and the Virgin Islands

Scattered thunderstorms and heavy rainfall may bring areas of flooding though the weekend over the Upper Midwest. A tropical disturbance will bring moderate to locally heavy rain to portions of South Texas into Saturday. Tropical Storm Erin may bring isolated flash and urban flooding, landslides or mudslides, and tropical storm conditions to Puerto Rico and the U.S. Virgin Islands. Read More >

Hazardous Weather Conditions

Current conditions at

Canby Airfield (KCNB)

Lat: 44.73°NLon: 96.27°WElev: 1194ft.

Overcast

74°F

23°C

Humidity 92%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 15 Aug 9:15 am CDT
Extended Forecast for

Astoria SD

  • Today

    Today: A slight chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. South wind 6 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 20%.

    High: 85 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 67. East northeast wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 67 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 81. East northeast wind around 10 mph. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East northeast wind around 11 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms. Partly sunny, with a high near 79. East wind 11 to 14 mph. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East northeast wind 9 to 11 mph. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 80. Northeast wind around 9 mph.

    High: 80 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64. East northeast wind 6 to 9 mph.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 80. Northeast wind 6 to 9 mph.

    High: 80 °F

    Mostly Sunny

Detailed Forecast

Today
A slight chance of showers and thunderstorms before noon, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. South wind 6 to 10 mph becoming east northeast in the afternoon. Chance of precipitation is 20%.
Tonight
Showers and thunderstorms likely, mainly after 4am. Mostly cloudy, with a low around 67. East northeast wind 7 to 9 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Saturday
A chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 81. East northeast wind around 10 mph. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East northeast wind around 11 mph. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. East wind 11 to 14 mph. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. East northeast wind 9 to 11 mph. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 80. Northeast wind around 9 mph.
Monday Night
Partly cloudy, with a low around 64. East northeast wind 6 to 9 mph.
Tuesday
Mostly sunny, with a high near 80. Northeast wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 61.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Mostly clear, with a low around 62.
Thursday
Sunny, with a high near 83.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Astoria SD
 44.55°N 96.53°W (Elev. 1814 ft)
Last Update:
8:47 am CDT Aug 15, 2025
Forecast Valid:
9am CDT Aug 15, 2025-6pm CDT Aug 21, 2025
 
Forecast Discussion
 
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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