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

Heat Builds in the West; Severe Thunderstorms and Heavy Rain in the Upper Midwest and Mid-Mississippi Valley; Extremely Critical Fire Weather in the Northwest on Saturday

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Severe thunderstorms and heavy rainfall are expected over parts of the Upper Midwest to mid-Mississippi Valley today. Critical to extremely critical fire weather conditions from the Northwest and the northern Great Basin on Saturday and Sunday. Read More >

Hazardous Weather Conditions

Current conditions at

Duluth - Sky Harbor Airport (KDYT)

Lat: 46.72°NLon: 92.04°WElev: 607ft.

Light Rain Fog/Mist

70°F

21°C

Humidity 100%
Wind Speed S 6 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 5.00 mi
Last update 31 Jul 11:15 am CDT
Extended Forecast for

Duluth MN

  • Today

    Today: Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 76. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Showers
    Likely

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Patchy fog after 5am. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 62. West wind around 5 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 73 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 56. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.

    Low: 56 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 69. East wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 69 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 54. Breezy, with an east wind 5 to 15 mph.

    Low: 54 °F

    Mostly Clear
    and Breezy
    then Mostly
    Clear

  • Monday

    Monday: Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 77 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers after 1am. Mostly cloudy, with a low around 61. East wind 5 to 10 mph becoming southwest after midnight.

    Low: 61 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 76. West wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 76 °F

    Chance
    Showers

Detailed Forecast

Today
Showers likely, with thunderstorms also possible after 1pm. Cloudy, with a high near 76. Northeast wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Patchy fog after 5am. Otherwise, cloudy during the early evening, then gradual clearing, with a low around 62. West wind around 5 mph. Chance of precipitation is 20%.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 73. East wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Partly cloudy, with a low around 56. Northeast wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 69. East wind 5 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 54. Breezy, with an east wind 5 to 15 mph.
Monday
Mostly sunny, with a high near 77. Southeast wind 5 to 10 mph, with gusts as high as 15 mph.
Monday Night
A chance of showers after 1am. Mostly cloudy, with a low around 61. East wind 5 to 10 mph becoming southwest after midnight.
Tuesday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 76. West wind 5 to 10 mph, with gusts as high as 15 mph.
Tuesday Night
Partly cloudy, with a low around 56. Northwest wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 75. Northwest wind 5 to 10 mph.
Wednesday Night
Partly cloudy, with a low around 57. North wind around 5 mph becoming calm in the evening.
Thursday
Mostly sunny, with a high near 79. Southwest wind around 5 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Duluth MN
 46.79°N 92.1°W
Last Update:
10:36 am CDT Jul 31, 2026
Forecast Valid:
11am CDT Jul 31, 2026-6pm CDT Aug 6, 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