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Heat Builds in the West; Extremely Critical Fire Weather in the Northwest

A heat wave over the Southwest will intensify this week, peaking and expanding into the Intermountain West and northern High Plains this weekend. Critical to extremely critical fire weather conditions are forecast from the Northwest and the northern Great Basin this weekend. Particularly Dangerous Situation Red Flag Warnings have been issued. Read More >

Hazardous Weather Conditions

Current conditions at

Baraboo Wisconsin Dells Airport (KDLL)

Lat: 43.52°NLon: 89.77°WElev: 971ft.

Overcast

66°F

19°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 2 Aug 7:15 am CDT
Extended Forecast for

Portage WI

  • Today

    Today: Patchy fog before 8am. Otherwise, partly sunny, with a high near 78. Northeast wind 5 to 10 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 54. Northeast wind around 5 mph becoming calm.

    Low: 54 °F

    Mostly Clear

  • Monday

    Monday: Patchy fog before 7am. Otherwise, sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 57. South wind around 5 mph becoming calm.

    Low: 57 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.

    High: 83 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.

    High: 76 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Calm wind.

    Low: 53 °F

    Chance
    Showers

  • Thursday

    Thursday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, partly sunny, with a high near 78. Northeast wind 5 to 10 mph.
Tonight
Mostly clear, with a low around 54. Northeast wind around 5 mph becoming calm.
Monday
Patchy fog before 7am. Otherwise, sunny, with a high near 80. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 57. South wind around 5 mph becoming calm.
Tuesday
Mostly sunny, with a high near 83. Southwest wind 5 to 10 mph.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 76. Calm wind becoming northwest around 5 mph. Chance of precipitation is 40%.
Wednesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Calm wind.
Thursday
Mostly sunny, with a high near 79.
Thursday Night
Mostly clear, with a low around 57.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 60.
Saturday
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portage WI
 43.57°N 89.49°W (Elev. 797 ft)
Last Update:
6:31 am CDT Aug 2, 2026
Forecast Valid:
7am CDT Aug 2, 2026-6pm CDT Aug 8, 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