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

Severe Weather and Heavy Rain from the Great Lakes to the Mid-Atlantic; Heat Persists in the East

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected from the Upper Ohio Valley into the southern Mid-Atlantic today and portions of the central Appalachians and Carolinas on Saturday. Monsoonal moisture will bring a flash flooding threat to the Desert Southwest. Sweltering heat persists from the Plains to the southern Mid-Atlantic through tonight. Read More >

Hazardous Weather Conditions

Current conditions at

ONIDAMUNC (K98D)

Lat: 44.7°NLon: 100.1°WElev: 1874ft.

Fair

77°F

25°C

Humidity 79%
Wind Speed E 12 mph
Barometer 29.91 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 4 Sep 10:35 am CDT
Extended Forecast for

Gettysburg SD

  • Today

    Today: A slight chance of showers between noon and 3pm. Areas of dense fog before noon. Otherwise, mostly sunny and hot, with a high near 91. East southeast wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 91 °F

    Areas Dense
    Fog then
    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 9pm. Mostly clear, with a low around 67. East southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms

  • Saturday

    Saturday: Sunny and hot, with a high near 95. South southeast wind 13 to 15 mph, with gusts as high as 23 mph.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly between 1am and 2am. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 68. Southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    Low: 68 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers, with thunderstorms also possible after 4pm. Sunny and hot, with a high near 90. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    High: 90 °F

    Slight Chance
    Showers then
    Slight Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Southeast wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 66 °F

    Chance
    Showers

  • Labor Day

    Labor Day: A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Breezy, with a south wind 17 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.

    High: 88 °F

    Chance
    T-storms and
    Breezy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 64. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.

    Low: 64 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Breezy, with a northwest wind 13 to 20 mph, with gusts as high as 29 mph.

    High: 83 °F

    Mostly Sunny
    and Breezy

Detailed Forecast

Today
A slight chance of showers between noon and 3pm. Areas of dense fog before noon. Otherwise, mostly sunny and hot, with a high near 91. East southeast wind 10 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Tonight
A chance of showers and thunderstorms, mainly before 9pm. Mostly clear, with a low around 67. East southeast wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Saturday
Sunny and hot, with a high near 95. South southeast wind 13 to 15 mph, with gusts as high as 23 mph.
Saturday Night
A chance of showers and thunderstorms, mainly between 1am and 2am. Mostly clear during the early evening, then becoming mostly cloudy, with a low around 68. Southeast wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Sunday
A slight chance of showers, with thunderstorms also possible after 4pm. Sunny and hot, with a high near 90. South southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 66. Southeast wind 14 to 16 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Labor Day
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88. Breezy, with a south wind 17 to 21 mph, with gusts as high as 32 mph. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 64. South southwest wind 11 to 16 mph, with gusts as high as 26 mph.
Tuesday
Mostly sunny, with a high near 83. Breezy, with a northwest wind 13 to 20 mph, with gusts as high as 29 mph.
Tuesday Night
Mostly clear, with a low around 56.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 55.
Thursday
Mostly sunny, with a high near 80.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gettysburg SD
 45.01°N 99.96°W (Elev. 2057 ft)
Last Update:
10:31 am CDT Sep 4, 2026
Forecast Valid:
10am CDT Sep 4, 2026-6pm CDT Sep 10, 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