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

Strong to Severe Thunderstorms in the East; Heat in the Central and Western U.S.

Strong to potentially severe thunderstorms with damaging wind gusts are forecast Thursday from parts of New England into the Mid Atlantic and Carolinas. Significant heat will expand across the West and Central Plains through Friday, potentially breaking daily high temperature records. Dangerous heat will then build into the Eastern U.S. this weekend through much of next week. Read More >

Hazardous Weather Conditions

Current conditions at

Siren, Burnett County Airport (KRZN)

Lat: 45.82°NLon: 92.37°WElev: 988ft.

Fair

57°F

14°C

Humidity 93%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Jun 3:15 am CDT
Extended Forecast for

6 Miles ENE Grantsburg WI

Extreme Heat Watch June 21, 12:00pm until June 22, 07:00pm
Click here for hazard details and duration
Extreme Heat Watch

  • Overnight

    Overnight: Partly cloudy, with a steady temperature around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: A chance of showers, with thunderstorms also possible after 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 40%.

    High: 82 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely, mainly before 10pm. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    T-storms
    Likely and
    Patchy Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Some of the storms could be severe. Cloudy, then gradually becoming mostly sunny, with a high near 82. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    High: 82 °F

    Severe
    Thunderstorms

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 70 °F

    Severe
    Thunderstorms

  • Saturday

    Saturday: Sunny and hot, with a high near 94. South wind around 10 mph, with gusts as high as 20 mph.

    High: 94 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers after 1pm. Sunny and hot, with a high near 93. Breezy, with a south wind 10 to 15 mph, with gusts as high as 25 mph.

    High: 93 °F

    Breezy. Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 25 mph.

    Low: 68 °F

    Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a steady temperature around 57. Calm wind.
Juneteenth
A chance of showers, with thunderstorms also possible after 4pm. Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 15 mph. Chance of precipitation is 40%.
Thursday Night
Showers and thunderstorms likely, mainly before 10pm. Patchy fog after 4am. Otherwise, increasing clouds, with a low around 59. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Some of the storms could be severe. Cloudy, then gradually becoming mostly sunny, with a high near 82. Southeast wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Friday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday
Sunny and hot, with a high near 94. South wind around 10 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 74. South wind around 10 mph, with gusts as high as 20 mph.
Sunday
A slight chance of showers after 1pm. Sunny and hot, with a high near 93. Breezy, with a south wind 10 to 15 mph, with gusts as high as 25 mph.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind around 10 mph, with gusts as high as 25 mph.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 79. West wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 56. Northwest wind around 5 mph becoming north after midnight.
Tuesday
A chance of showers. Partly sunny, with a high near 71. Northeast wind around 5 mph, with gusts as high as 15 mph.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Northeast wind around 5 mph.
Wednesday
Showers and thunderstorms likely. Cloudy, with a high near 68. Northeast wind around 5 mph, with gusts as high as 15 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ENE Grantsburg WI
 45.82°N 92.56°W
Last Update:
2:40 am CDT Jun 19, 2025
Forecast Valid:
3am CDT Jun 19, 2025-6pm CDT Jun 25, 2025
 
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Additional Resources

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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