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

Extreme Heat and Excessive Rainfall Today

Dangerous and extreme heat will remain across portions of the southern U.S. through the weekend. A heat wave over the Southwest U.S. will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Multiple rounds of thunderstorms will produce heavy to excessive rainfall with significant flash flooding across portions of southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

BRITTON (KBTN)

Lat: 45.82°NLon: 97.74°WElev: 1318ft.

Fair

93°F

34°C

Humidity 47%
Wind Speed S 14 mph
Barometer 29.88 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index99°F (37°C)
Last update 29 Jul 4:35 pm CDT
Extended Forecast for

Lake City SD

Heat Advisory July 29, 04:54pm until July 29, 09:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 29, 04:54pm until July 29, 09:00pm

    NOW until 9:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 88 °F

    Patchy Smoke

  • Tonight

    Tonight: Patchy smoke. Mostly cloudy, with a low around 69. South wind 9 to 13 mph, with gusts as high as 23 mph.

    Low: 69 °F

    Patchy Smoke

  • Thursday

    Thursday: Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. Patchy smoke before 8am. High near 80. South wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 80 °F

    Chance
    T-storms then
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 3am, then a chance of showers between 3am and 4am. Some of the storms could produce heavy rainfall. Patchy smoke after 11pm. Low around 61. North northeast wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 61 °F

    Heavy Rain
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 7am and 1pm. Patchy smoke before 8am. Mostly sunny, with a high near 77. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 77 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 59. North wind 5 to 10 mph becoming light after midnight.

    Low: 59 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80. Light and variable wind becoming south around 6 mph in the morning.

    High: 80 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63. South wind 6 to 11 mph, with gusts as high as 20 mph.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

This Afternoon
Patchy smoke. Partly sunny, with a high near 88. South southeast wind around 11 mph, with gusts as high as 20 mph.
Tonight
Patchy smoke. Mostly cloudy, with a low around 69. South wind 9 to 13 mph, with gusts as high as 23 mph.
Thursday
Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. Patchy smoke before 8am. High near 80. South wind 10 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Showers and thunderstorms before 3am, then a chance of showers between 3am and 4am. Some of the storms could produce heavy rainfall. Patchy smoke after 11pm. Low around 61. North northeast wind 8 to 11 mph. Chance of precipitation is 80%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A slight chance of showers between 7am and 1pm. Patchy smoke before 8am. Mostly sunny, with a high near 77. North wind 11 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 59. North wind 5 to 10 mph becoming light after midnight.
Saturday
Sunny, with a high near 80. Light and variable wind becoming south around 6 mph in the morning.
Saturday Night
Mostly clear, with a low around 63. South wind 6 to 11 mph, with gusts as high as 20 mph.
Sunday
Sunny, with a high near 81. Breezy, with a south wind 14 to 20 mph, with gusts as high as 31 mph.
Sunday Night
Mostly clear, with a low around 66. Breezy.
Monday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 82. Breezy. Chance of precipitation is 20%.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 56. Breezy. Chance of precipitation is 60%.
Tuesday
A slight chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 20%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lake City SD
 45.72°N 97.41°W (Elev. 1890 ft)
Last Update:
4:37 pm CDT Jul 29, 2026
Forecast Valid:
4pm CDT Jul 29, 2026-6pm CDT Aug 4, 2026
 
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