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

Thunderstorms and Heavy Rainfall in the Southeast, Montana, and Iowa; Lowell Begins to Impact Hawaii

Strong thunderstorms with damaging winds and heavy rain are expected across portions of the Southeast. Thunderstorms may produce large hail across portions of Montana. Heavy rainfall could produce flash flooding across Iowa and vulnerable areas in Utah. Lowell will bring heavy rain, dangerous swells and rip currents to portions of Hawaii. Sweltering heat persists across the South-Central US. Read More >

Hazardous Weather Conditions

Current conditions at

Jamestown, Jamestown Municipal Airport (KJMS)

Lat: 46.93°NLon: 98.68°WElev: 1499ft.

Fair

76°F

24°C

Humidity 74%
Wind Speed S 9 mph
Barometer 29.88 in (1011.3 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 6 Sep 5:56 pm CDT
Extended Forecast for

Jamestown Municipal Airport ND

  • Tonight

    Tonight: A 40 percent chance of showers and thunderstorms, mainly between midnight and 1am. Mostly cloudy, with a low around 64. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms

  • Labor Day

    Labor Day: Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 80. Southeast wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    T-storms
    Likely

  • Monday Night

    Monday Night: A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 62. South wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph.

    Low: 62 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, then gradually becoming sunny, with a high near 77. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.

    High: 77 °F

    Becoming
    Sunny and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53. Breezy, with a west wind 17 to 20 mph, with gusts as high as 36 mph.

    Low: 53 °F

    Mostly Clear
    then Partly
    Cloudy and
    Breezy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 72. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 37 mph.

    High: 72 °F

    Mostly Sunny
    and Breezy

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 18 mph.

    Low: 48 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 81. Southwest wind 7 to 16 mph, with gusts as high as 26 mph.

    High: 81 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 55. South wind 10 to 14 mph, with gusts as high as 23 mph.

    Low: 55 °F

    Mostly Clear

Detailed Forecast

Tonight
A 40 percent chance of showers and thunderstorms, mainly between midnight and 1am. Mostly cloudy, with a low around 64. Southeast wind 8 to 11 mph, with gusts as high as 21 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Labor Day
Showers and thunderstorms likely, mainly before 4pm. Mostly cloudy, with a high near 80. Southeast wind 13 to 18 mph, with gusts as high as 31 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
A 30 percent chance of showers and thunderstorms, mainly before 7pm. Mostly cloudy, with a low around 62. South wind 9 to 15 mph becoming west after midnight. Winds could gust as high as 26 mph.
Tuesday
Partly sunny, then gradually becoming sunny, with a high near 77. Breezy, with a west wind 11 to 16 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 37 mph.
Tuesday Night
Mostly clear, with a low around 53. Breezy, with a west wind 17 to 20 mph, with gusts as high as 36 mph.
Wednesday
Mostly sunny, with a high near 72. Breezy, with a northwest wind 18 to 22 mph, with gusts as high as 37 mph.
Wednesday Night
Mostly clear, with a low around 48. Northwest wind 5 to 10 mph becoming light and variable. Winds could gust as high as 18 mph.
Thursday
Sunny, with a high near 81. Southwest wind 7 to 16 mph, with gusts as high as 26 mph.
Thursday Night
Mostly clear, with a low around 55. South wind 10 to 14 mph, with gusts as high as 23 mph.
Friday
Mostly sunny, with a high near 74. Northwest wind 11 to 17 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around 48. Northwest wind 9 to 14 mph, with gusts as high as 22 mph.
Saturday
Partly sunny, with a high near 66. Northwest wind 11 to 18 mph, with gusts as high as 29 mph.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 44. North wind 9 to 14 mph, with gusts as high as 22 mph.
Sunday
Partly sunny, with a high near 63.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Jamestown Municipal Airport ND
 46.92°N 98.67°W
Last Update:
6:36 pm CDT Sep 6, 2026
Forecast Valid:
6pm CDT Sep 6, 2026-6pm CDT Sep 13, 2026
 
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